• Synaffix B.V. v. Hangzhou Dac Biotech Co., Ltd.Some claims unpatentable
  PTAB · Aug 26, 2025 · IPR2022-01531 · APJ Devon Zastrow Newman · IPR · Final written decision

  Claims 1–17, 20, 21, 24, 26, and 29–31 are unpatentable; claims 25 and 32–34 were not shown unpatentable, and the motion to exclude was dismissed as moot.

  RulingsFinal written decision

  • RemandOther

    “review of claims 1–17, 20, 21, 24–26, and 29–34 of the ’682 patent. Paper 2 (“Pet.”), 1, 3. Patent Owner, Hangzhou DAC Biotech Co., Ltd., filed a Preliminary Response (Paper 9, “Prelim. Resp.”). We initially determined that the information presented in the Petition did not establish a reasonable likelihood that Petitioner would prevail with respect to at least one of the challenged claims, and did not institute inter partes review. Paper 17. Petitioner requested Director review of our decision denying institution (Paper 18 (“Request”)). The Director delegated review of the decision to a Delegated Rehearing Panel (“DRP”). Paper 19. Patent Owner was granted the option to file a response to Petitioner’s Request (Paper 22 (“Request Resp.”)). The Delegated Review Panel vacated our decision and remanded the case to this panel with a revised claim construction for claim 1. Paper 23 (“DRP Dec.”). On August 30, 2024, we instituted an inter partes review after remand from the Director. Paper 25 (“Inst. Dec.”). Patent Owner subsequently filed a Patent Owner Response (Paper 31, “Resp.”), Petitioner filed a Reply (Paper 36, “Reply”), Patent Owner filed a Sur-reply (Paper 44, “Sur-reply”), and Petitioner filed a Sur-sur-reply (Paper 48, “Sur-sur-reply”).” slip op. at 2

  • PTAB / AIA Trials › Motions to amend / substitute claimsOther

    “I. Patent Owner’s Motion to Exclude Evidence Patent Owner moves to exclude Exhibits 1089 and 1090. Paper 50. As we did not rely on either of Exhibits 1089 or 1090 in deciding this matter, Patent Owner’s motion is dismissed as moot.” slip op. at 96

  • Novelty / Anticipation (§102) › Anticipation standard (single reference, every element)Not shown unpatentableMixed

    “For these reasons, Patent Owner’s arguments and cited evidence also” slip op. at 31

  • Obviousness (§103) › Motivation to combine / reasonable expectation of successUnpatentableNot shown unpatentableMixed

    “function as R2, and the ethyl group may function as R4, which can be a linear alkyl having 1–6 carbon atoms. We note that claim 3 permits R5 and R6 to be absent. For these reasons, the arguments presented in the Petition demonstrate that claim 3 would have been obvious over Singh’s Compound 3 when modified in view of Harris.” slip op. at 73

  Patent outcomesUS 10,131,682 mixed
  § 102 anticipation§ 103 obviousnesscites Phillips · KSR · Graham
  Patents in suitUS 10,131,682
• Lululemon USA Inc. v. Nike, Inc.Some claims unpatentable
  PTAB · May 21, 2025 · IPR2024-00159 · APJ Carl M Defranco · IPR · Final written decision

  Claims 8, 9, 14, 15, and 19 are unpatentable over Minami; claims 1–3, 7, 16–18, and 20 were not shown unpatentable over Good or Munsing.

  RulingsFinal written decision

  • Skill levelSkill level board ownOther

    “lululemon contends, and Nike does not dispute, that a person skilled in the art in the relevant time frame would have had “at least a bachelor’s degree in mechanical engineering, textile engineering, or similar technical degree and at least 3 years of experience working with knitted textiles for use in fabric-based articles, including apparel such as footwear” and such person’s “additional experience compensates for any differences in that person’s education as stated above.” Pet. 13–14 (citing Ex.1003 ¶¶ 33–35); see also PO Resp. 14 (“For purposes of this proceeding, Nike applies lululemon’s proposed level of skill in the art.”). We find that lululemon’s proposed definition is consistent with the problems and solutions described in the ’046 patent and the prior art of record. Thus, we adopt the parties’ agreed-upon definition of the level of skill in the art.” slip op. at 6

  • Claim Construction › Intrinsic evidence (Phillips canons) › Plain and ordinary meaning to a POSITATerm construed board ownDecided for patent owner

    “We are not persuaded by lululemon’s attempt to equate the term “channel” in that passage with an open-periphery configuration. Nowhere does that passage indicate that the “channel” has an open-periphery. Instead, lululemon merely presumes, without support, that channels are open-periphery structures. More accurately, the terms “tunnel” and “channel” in the passage cited by lululemon are used synonymously. That is made clear by the overall context of the ’046 patent at issue, which is directed to how tubular rib structures 126 are formed by “first” and “second” curved portions 416 and 418 that are “knitted together” to define “hollow tube 112.” See Ex. 1001, 10:16–11:14, Figs. 4, 5 (emphasis added). In particular, the sentence cited by lululemon describes hollow tube 112 as being “disposed between” first and second curved portions 416 and 418, which Figures 4 and 5 of the ’046 patent clearly depict in a closed-periphery configuration. See id. at 10:66–11:3, Figs. 4, 5. Moreover, the very next sentence expressly describes that hollow tube 112 has “a generally cylindrical or elliptical shape” wherein “[t]he diameter of one hollow tube and the diameter of other hollow tubes may differ in some embodiments.” Id. at 11:3–14 (emphases added). We are not aware of any open-periphery channels being described as having a cylindrical or elliptical shape, nor are we aware of such a channel being described as having a diameter. Thus, lululemon’s proposed claim construction ignores the context surrounding the ’046 patent’s description of the tubular rib structures when it describes them as having the configuration of a tunnel or channel.” slip op. at 10

  • Novelty / Anticipation (§102) › Anticipation standard (single reference, every element)Not shown unpatentableNot shown unpatentable

    “We agree with Nike, given our construction of the claimed “tubular structures.” As shown in annotated Figures 1, 3, and 4 of Good (reproduced below), Good discloses a sock 12 having rib portions 22 (red) and webbed areas 24 (green). See PO Resp. 19. lululemon contends that Good’s rib portions 22 meet the claimed “tubular structures” because each rib portion 22 “roll[s] substantially together in the relaxed condition” and “has the shape of a tube, namely an elongate hollow structure.” Pet. 29–30. In support, lululemon points to Good’s Figure 3 (reproduced below center) as allegedly showing the tubular shape of Good’s rib portions 22. Id. at 30. Annotated Figure 3 is a vertical cross-section of rib portions 22 (red) shown in Good’s Figure 1. But, as Nike correctly notes, Good’s rib portions 22 are “C-shaped knitted portions,” which when stretched, go from an essentially C-shaped configuration (Figure 3) to a relatively flat, linear configuration (Figure 4). PO Resp. 19–20 (citing Ex. 2006 ¶¶ 48–49). Nowhere does Good disclose that the ends of C-shaped rib portions 22 ever meet and remain in a closed periphery configuration to form a hollow tube per our construction of “tubular structures” (as discussed above in Section II.B). In at least this way, Good’s C-shaped rib portions 22 differ from the claimed “tubular structures.”7 Thus, we find that Good does not disclose or otherwise suggest the claimed “tubular structures,” as properly construed, meaning that lululemon fails to demonstrate, by a preponderance of the evidence, that Good either anticipates claims 1–3, 7, 16–18, and 20, or, alternatively, renders obvious claim 3.” slip op. at 16

  • Expert testimonyPetitioner expert discountedDecided for patent owner

    “In our Institution Decision, we said that Munsing lacks the claimed “tubular structures” because “nowhere does Munsing indicate that the rows of stitches or loops form a rib that is tubular-like, let alone one with a closed periphery.” Inst. Dec. 10–12. During the trial phase, lululemon’s expert likewise agreed, conceding (on cross-examination) that Munsing only discloses non-tubular structures. See Ex. 2007, 40:9–41:11 (“Q [by Patent Owner’s counsel]: So you agree that . . . Munsing only discloses a nontubular rib? A [by lululemon’s expert]: That’s what I said.”). Nowhere does lululemon rebut that admission by its own expert, despite Nike noting it explicitly as a reason for rejecting Ground 2. Compare PO Resp. 25–26 (noting the admission of lululemon’s expert), with Pet. Reply 1–26 (addressing only Grounds 1 and 3, while omitting any mention of Ground 2, which is based on Munsing). Nor does lululemon ever dispute the preliminary findings in our Institution Decision as to why Munsing is not an anticipatory reference. Compare Inst. Dec. 10–12, with Pet. Reply 1–22. Thus, lululemon fails to demonstrate, by a preponderance of the evidence, that Munsing anticipates challenged claims 1–3, 7, 17, 18, and 20.” slip op. at 18

  Patent outcomesUS 9,375,046 mixed
  Claim construction§ 102 anticipation§ 103 obviousness
  Patents in suitUS 9,375,046
• Google LLC v. Security First Innovations, LLCSome claims unpatentable
  PTAB · May 16, 2025 · IPR2024-00212 · APJ Thomas L Giannetti · IPR · Final written decision

  Claims 1, 2, 5, 9, and 11–14 were held unpatentable as obvious over Tajima and Foster or Foster and Hayhurst; the remaining challenged claims were not shown unpatentable.

  RulingsFinal written decision

  • Skill levelSkill level petitioner adoptedOther

    “had at least a bachelor’s degree in computer science, computer engineering, or a related field, with three years of experience in the area of securing data from unauthorized access or use.” Pet. 4 (citing Bhattacharjee Decl. ¶¶ 41– 45). Petitioner further asserts that a “higher level of education may substitute for less experience.” Id. At the institution stage, Patent Owner did not oppose Petitioner’s assertions or provide a definition of a person of ordinary skill in the art. See generally Prelim. Resp.; Rubin I Decl. ¶ 20 (accepting Dr. Bhattacharjee’s proposed qualifications for the purposes of his declaration). We regarded Petitioner’s description as consistent with the prior art before us. See Okajima v. Bourdeau, 261 F.3d 1350, 1355 (Fed. Cir. 2001) (prior art itself may reflect an appropriate level of skill). Thus, for the purpose of our Institution Decision, we adopted Petitioner’s proposal. Institution Dec. 11. Post-institution, neither party has contested this description. See Rubin II Decl. ¶ 20 (accepting Dr. Bhattacharjee’s definition). For the reasons given, we maintain our previous description of the person of ordinary skill.” slip op. at 13

  • Expert testimonyPatent owner expert creditedPetitioner expert discountedDecided for patent owner

    “Ex. 1005 ¶ 0111. Dr. Rubin testifies, succinctly, that “I do not believe that a [person of ordinary skill] would understand that Tajima uses the term ‘information regarding the key’ to refer to the key. If Tajima meant to say the ‘key,’ there would be no need to use the phrase ‘information regarding the key.’” Rubin II Decl. ¶ 41. He further testifies that “[w]hen Tajima wishes to refer to a ‘key,’ it does so directly” (citing many instances where Tajima makes explicit reference to keys). Id. ¶ 42 (citing Ex. 1005 ¶¶ 67, 70, 71, 75, 77, 86, 88, 89). We find Dr. Rubin’s reasoning on this issue persuasive. On the other hand, we find Dr. Bhattacharjee’s response less convincing. Bhattacharjee II Decl. ¶¶ 5–23. We find that he does not 5 Petitioner states that it does not rely on the doctrine of inherency to establish that this limitation is met by Tajima. Pet. Reply 2. understand that Tajima uses the terms “information regarding the key” and “key information” to refer to an encryption key. Id. ¶ 5 (citing Bhattacharjee I Decl. ¶ 103, 131). Lacking support for disclosure of an encryption key in Tajima itself, Dr. Bhattacharjee turns to other references, including Foster. Id. ¶¶ 7–9. Dr. Bhattacharjee testifies that “Foster’s use of the term ‘key information’ to describe information that includes the key and additional information . . . explains why Tajima did not just say ‘key’ when referring to the information attached to the data fragments.” Id. ¶ 8. Dr. Bhattacharjee’s testimony is unconvincing. In Foster, there is explicit disclosure of including the encrypted title key itself in the header extension. Ex. 1006 ¶ 66 (“As depicted, header extension 118 includes encrypted title key 112 . . . “). In contrast, Dr. Bhattacharjee cites no similar disclosure in Tajima. In fact, Dr. Bhattacharjee’s reliance on other references to support anticipation runs contrary to the rule that “[a] claim is anticipated only if each and every element as set forth in the claim is found, either expressly or inherently described, in a single prior art reference.” Verdegaal Bros., Inc. v. Union Oil Co. of Cal., 814 F.2d 628, 631 (Fed. Cir. 1987) (emphasis added). We do not find Dr. Bhattacharjee’s testimony based on Foster and other references convincing of anticipation by Tajima. Nor do we find Petitioner’s alternative obviousness challenge based on Tajima persuasive. Pet. 22. The Petition includes a single-sentence explanation of this obviousness contention: “Even if Tajima had not disclosed that its key information includes the corresponding key, that would have been an obvious and conventional way to implement what Tajima discloses—i.e., a system that needs only the key information to decrypt data fragments and not additional key management infrastructure.” Id. (citing paragraph 104 of his initial declaration mirrors the Petition and provides no record citations to support his opinion of obviousness. Such unsupported expert testimony is entitled to little weight. “Expert testimony that does not disclose the underlying facts or data on which the opinion is based is entitled to little or no weight.” 37 C.F.R. § 42.65(a); PTAB Consolidated Trial Practice Guide 40 (Nov. 2019) (“Trial Practice Guide”) (“Opinions expressed without disclosing the underlying facts or data may be given little or no weight.”).6” slip op. at 17

  • Obviousness (§103) › Motivation to combine / reasonable expectation of successMotivation foundReasonable expectation foundUnpatentable

    “Patent Owner responds that Petitioner “fails to demonstrate” a motivation to combine the references. PO Resp. 9. Patent Owner argues that “Tajima and Foster are directed to entirely different fields and to different problems.” Id. We disagree. As Petitioner points out, both Tajima and Foster are in the field of securing data, as is the ’116 patent. Pet. Reply 13–14 (citing Ex. 1005 ¶ 44; Ex. 1006 ¶ 3). Dr. Bhattacharjee testifies, “Tajima and Foster also both describe techniques for securing data using encryption and securely storing keys with encrypted data.” Bhattacharjee II Decl. ¶ 35 (citing Ex. 1005 ¶¶ 109–114; Ex. 1006 ¶¶ 64–71). Patent Owner argues Foster’s disclosure of a KEK would have been “redundant” to Tajima’s key-securing obfuscation technique. PO Resp. 18. We find this argument is unavailing. As Petitioner points out, Patent Owner’s argument “ignores Tajima’s vulnerability that Foster’s key-encryption addresses.” Pet. Reply 16. More specifically, “[r]equiring an attacker to obtain KEKs to decrypt Tajima’s encryption keys in addition to de-obfuscating them is not ‘redundant’ to only having to de-obfuscate them.” Pet. Reply 16 (emphasis omitted) (citing Bhattacharjee II Decl. ¶¶ 41–44). We find that Petitioner’s argument for combining the references is persuasive for the reasons given. Patent Owner further argues that Tajima and Foster address different problems and disclose solutions that are “fundamentally at odds.” PO Resp. 9–16, 25–27. Patent Owner asserts that “Foster’s system requires synchronizing the transmission of encrypted content packets with the keys used to encrypt those packets, so that each packet can be viewed immediately upon receipt.” Id. at 15 (emphasis omitted). Patent Owner attaching it to a different data fragment, the problem Foster sought to solve is the ‘need . . . for a key used to encrypt content to be itself encrypted, and transmitted as an integral part of the [same] content.’” Id. (alterations in original) (citing Ex. 1006 ¶ 7). We are not persuaded by this argument. As noted supra, for the reasons given, we find that both Tajima and Foster are in the field of securing data from unauthorized access. Pet. Reply 13. Furthermore, as Petitioner points out, we find that in Petitioner’s combination of Tajima and Foster, Tajima’s data (which does not require synchronization) is secured, not Foster’s. See Pet. 34–36 (providing reasons for encrypting Tajima’s keys); Pet. Reply 17–18 (“Synchronization of Foster’s data is irrelevant to Tajima-Foster because Tajima-Foster does not restore Foster’s data.”). Thus, we find that Patent Owner’s argument based on the need to synchronize Foster’s data for streaming is unavailing. We have considered Patent Owner’s other arguments and find them lacking. See, e.g., Patent Owner’s Sur-reply, which repeats the arguments that Tajima and Foster are in a “different field,” “fundamentally at odds,” “[i]n direct contrast,” and that applying Foster’s KEK teachings to Tajima would be “redundant.” PO Sur-reply 2–9. For reasons already discussed, we find these arguments unconvincing. In sum, we find for the reasons given that Petitioner has proved by a” slip op. at 21

  • Obviousness (§103) › Motivation to combine / reasonable expectation of success › Teaching awayMotivation not foundNot shown unpatentable

    “Dr. Rubin explains that Kerckhoff’s Principle “holds that a cryptosystem should be secure, even if everything about the system, except the key, is public knowledge.” Rubin II Decl. ¶ 94. Citing this testimony, Patent Owner argues, “Shyu’s anti-piracy system is a prototypical attempt to achieve security through obscurity, to the extent it proposes to conceal or obscure the encryption algorithms.” PO Resp. 33. Petitioner does not persuasively respond to this argument. Pet. Reply 20–21. Petitioner argues that “Shyu does not use secret algorithms.” Id. at 20. Instead, according to Petitioner “Shyu selects from among known algorithms to secure different data segments.” Id. However, we find Shyu’s disclosure that “the scrambling algorithm and the key word for the source data are dynamically changed to effectively guard against piracy” is telling evidence that the underlying algorithms themselves are not secure, and therefore Kerckhoff’s principle applies here. See Ex. 1016, 1:37–39. We also find persuasive reasoning in Patent Owner’s assertion that “[c]ombining associated with maintaining multiple encryption algorithms and tracking encryption algorithm ‘metadata,’ without providing any substantial security.” PO Resp. 34–35. In sum, for the reasons given, we agree with Patent Owner that Petitioner fails to prove sufficiently that a person of ordinary skill would have been motivated to combine Tajima and Rivest. Further, Petitioner fails to demonstrate that even assuming that Tajima and Rivest would have been combined, a person of ordinary skill would have further combined their teachings with Shyu.” slip op. at 25

  Patent outcomesUS 11,178,116 mixed
  § 103 obviousnesscites Phillips
  Patents in suitUS 11,178,116
• Simpson Strong-Tie Company Inc. v. Columbia Insurance CompanySome claims unpatentable
  PTAB · Feb 28, 2025 · PGR2023-00048 · APJ Stephen E Belisle · PGR · Final written decision

  Claims 1–37, 39–90, and 92–105 are unpatentable as obvious; claims 38 and 91 were not shown unpatentable because the cited references do not teach flanges physically contacting along a juncture.

  RulingsFinal written decision

  • Skill levelSkill level petitioner adoptedDecided for petitioner

    “B. Level of Ordinary Skill in the Art Petitioner contends that a person of ordinary skill in the art, at the time of the effective filing date of the ’626 patent, “would have had an education background of, or practical experience providing an equivalent to, a Bachelor of Science in Mechanical Engineering, Structural Engineering or a related/equivalent field and at least four years of work experience in construction connector design/development.” Pet. 11 (citing Ex. 1003 ¶¶ 12–15). Patent Owner does not dispute this assessment. PO Resp. 17–18. In determining the level of ordinary skill in the art, various factors may be considered, including the “type of problems encountered in the art; prior art solutions to those problems; rapidity with which innovations are made; sophistication of the technology; and educational level of active workers in the field.” In re GPAC Inc., 57 F.3d 1573, 1579 (Fed. Cir. 1995) (citation omitted). The level of ordinary skill in the art also may be reflected by the prior art of record. See Okajima v. Bourdeau, 261 F.3d 1350, 1355 (Fed. Cir. 2001). Neither party argues that the outcome of these cases would differ based on our adoption of any particular definition of the level of ordinary skill in the art. Considering the subject matter of the ’626 patent, the background technical field, the prior art, and Petitioner’s proposed and undisputed definition of the skilled artisan, we apply the level of skill set forth above, which is consistent with the testimony of Mr. Fennell (Ex. 1003 ¶¶ 12–15).” slip op. at 20

  • Claim Construction › Intrinsic evidence (Phillips canons) › Plain and ordinary meaning to a POSITATerm construed board ownDecided for petitioner

    “shaped portion configured to receive the structural component,” “a connection portion,” and “an extension portion,” and that “the extension portion spac[es] the channel-shaped portion from the [connection portion]” and “the channel-shaped portion, the extension portion and the connection portion are rigidly fixed with respect to one another.” Ex. 1001, 12:14–36 (emphases added). Claim 1’s repeated use of “portion[s]” to delineate between the three main elements of the hanger, i.e., channel-shaped portion, connection portion, and extension portion, shows or at least strongly suggests substantial flexibility as to the specific location where one “portion” transitions to another “portion” in the fire wall hanger. Similarly, although claim 1 recites that the “channel-shaped portion” is “configured to receive the structural component,” claim 1 recites no limitation precluding other “portions” of the hanger from also “receiv[ing]” or otherwise contacting the structural component. Patent Owner argues that “channel-shaped portion” should be construed to mean “[the] portion of the hanger that forms a channel configured to receive the structural component.” PO Resp. 19. Petitioner and its expert, Mr. Fennell, agree with this meaning (Pet. Reply 4; Ex. 1046 ¶¶ 16–20), and so do we. Indeed, claim 1 plainly recites this as discussed above. But Patent Owner then urges us to narrow the meaning of “portion” itself such that “channel-shaped portion” requires “all portions of the hanger which directly bound the channel that receives the structural component.” PO Resp. 19 (emphases added). Patent Owner argues the Specification makes this “clear.” Id. (citing Ex. 1001, 2:28–31). Contrary to Patent Owner’s arguments (PO Resp. 19), we find no support in claim 1 to further narrow the interpretation of “portion” in “channel-shaped portion” to mean every portion of the hanger which directly bounds the channel that receives the structural component. See Ex. 1001, 12:14–36 (claim 1). We, like Petitioner, similarly find no support in the Specification or limited prosecution history (see Pet. 5–6), and Patent Owner does not direct us to any, showing that the inventor acted as its own lexicographer or disavowed any claim scope to allot this narrowed interpretation to the subject limitation. See Pet. Reply 3 (“Nowhere does the ’626 patent specification describe that all portions of the hanger directly bounding channel 52 constitute the channel-shaped portion.” (citing Ex. 1046 ¶¶ 16–18; Ex. 1001, 4:39–47)); PO Resp. 19.” slip op. at 33

  • Obviousness (§103) › Motivation to combine / reasonable expectation of successMotivation foundReasonable expectation foundDecided for petitioner

    “Petitioner argues, inter alia, that Yamaguchi teaches a joist hanger with an extension portion defining a space between its back flange and channel-shaped portion, and Bundy teaches to size a space created by an extension portion of its joist hanger to receive two layers of ⅝-inch-thick drywall between its back flange plane and channel-shaped portion. Pet. 16–18 (citing 1003 ¶¶ 75–78; Ex. 1007, 5:16–18, Fig. 1; Ex. 1041 (“Perspective View”; “Usage View”)); see id. at 17–18 (discussing “advantages” of two layers of 5/8" drywall as “fire resistance in a fire separation wall”). Petitioner argues the skilled artisan “would have been motivated to receive drywall between Yamaguchi’s back flange and channel-shaped portion to provide a shielded fire resistant wooden frame wall.” Pet. 18 (citing Ex. 1003 ¶¶ 78–79; Ex. 1007, 2:10–24); see id. ([“The skilled artisan] would have optimized the size of the spacing between Yamaguchi’s back flange and channel-shaped portion to accommodate two layers of 5/8”-thick-drywall according to the size preference described by Bundy for optimal fire protection and wall integrity.” (citing Ex. 1003 ¶ 80; Ex. 1007, 5:10–22)). Petitioner concludes: This modification to Yamaguchi would have been nothing more than applying a known technique (Bundy’s spacing a hanger seat from a wall frame by distance sufficient to accommodate two 5/8”-thick-drywall sheets for fire resistance) to a similar device (Yamaguchi’s hanger having a spacing of indeterminate length) to obtain the predictable result of a firewall hanger having a space between its channel-shaped portion and a wall frame large enough for receiving drywall therebetween, thereby “protect[ing] the structural members of a building.” Pet. 18 (citing Ex. 1007, 5:18–20; Ex. 1003 ¶ 80). Petitioner argues the skilled artisan would have had a reasonable expectation of success in modifying Yamaguchi as discussed above, “because doing so would still allow Yamaguchi’s hanger to perform its intended function of securing a joist to a wall.” Pet. 18 (citing Ex. 1041, 1; Ex. 1003 ¶ 81). Petitioner argues, “[r]ecognizing that Yamaguchi’s and Bundy’s hangers are constructed from sheet metal,” the skilled artisan “would have understood how to modify the size of Yamaguchi’s extension portions to accommodate two layers of 5/8”-thick-drywall while still allowing Yamaguchi’s hanger to secure a joist’s end to a frame wall.” Pet. 18–19 (citing Ex. 1003 ¶¶ 81–83; Ex. 1007, 4:47–51); see id. at 19–20 (discussing that although “Yamaguchi’s described setting is a sill plate,” the skilled artisan “would have been motivated to use Yamaguchi’s hanger on a wood frame wall in particular so that sheathing could be installed in the space behind the joist as taught by Bundy” (citing Ex. 1003 ¶¶ 81–82)). Based on the foregoing and the complete record before us, we find Petitioner’s cited evidence provides sufficient rational reasons to combine Yamaguchi and Bundy to arrive at the invention of claim 1 with a reasonable expectation of success in doing so.” slip op. at 46

  • Obviousness (§103) › Graham factors (scope of art, differences, level of skill)Not shown unpatentableNot shown unpatentable

    “Analysis Patent Owner argues, “[w]hile the asserted prior art does teach flanges or sidewalls that are in opposed relation to each other, none of Adams, Cullen, or Yamaguchi teach that these flanges or sidewalls engage each other along a juncture.” PO Resp. 42–43; see PO Sur-reply 6 (Patent Owner arguing, “Adams’s, Cullen’s, and Yamaguchi’s extension flanges are spaced well apart.”). Petitioner’s arguments to the contrary depend wholly on its proposed interpretation of the term “engaging” (Pet. 58–60; Pet. Reply 30–31), which we reject, as discussed above. Although Yamaguchi (and Cullen and Adams) may teach extension flanges in opposed, face-to-face relation, Petitioner does not explain, let alone with particularity or persuasively, how Yamaguchi’s (or Cullen’s or Adams’) flanges, which would wind up located on opposing sides of a joist (where a joist is mounted in the hanger), also teach such extension flanges engaging each other along a juncture—indeed, what juncture? See PO Sur-reply 7 (“Beyond asserting that the word ‘engaging’—standing alone—does not require ‘touching contact,’ [Petitioner] still does not address how the extension flanges of Yamaguchi, Cullen, and Adams can be said to ‘engage’ each other.”). Based on the foregoing and the complete record before us, we find Petitioner does not sufficiently establish that the combination of Yamaguchi and Bundy teaches or even fairly suggests a fire wall hanger wherein “the first and second extension flanges engag[e] each other along a juncture, the juncture arranged to be positioned within the two layers of ⅝-inch-thick drywall,” as recited in dependent claims 38 and 91.” slip op. at 70

  Patent outcomesUS 11,649,626 mixed
  Claim construction§ 103 obviousnesscites Phillips · KSR · Graham
  Patents in suitUS 11,649,626
• Simpson Strong-Tie Company Inc. v. Columbia Insurance CompanySome claims unpatentable
  PTAB · Feb 28, 2025 · PGR2023-00049 · APJ Stephen E Belisle · PGR · Final written decision

  Claims 1–37, 39–90, and 92–105 are unpatentable as obvious; claims 38 and 91 were not shown unpatentable because the asserted references did not teach flanges physically touching along a juncture.

  RulingsFinal written decision

  • Skill levelSkill level petitioner adoptedDecided for petitioner

    “B. Level of Ordinary Skill in the Art Petitioner contends that a person of ordinary skill in the art, at the time of the effective filing date of the ’626 patent, “would have had an education background of, or practical experience providing an equivalent to, a Bachelor of Science in Mechanical Engineering, Structural Engineering or a related/equivalent field and at least four years of work experience in construction connector design/development.” Pet. 11 (citing Ex. 1003 ¶¶ 12–15). Patent Owner does not dispute this assessment. PO Resp. 17–18.” slip op. at 20

  • Expert testimonyPetitioner expert creditedDecided for petitioner

    “artisan would have interpreted or understood the teachings of Yamaguchi and Bundy, as well as of the combination of those references, are unsupported attorney-arguments. See In re Pearson, 494 F.2d 1399, 1405 (CCPA 1974) (“Attorney’s argument in a brief cannot take the place of evidence.”). Patent Owner cites no evidence of how the skilled artisan would have understood the combined teachings of Yamaguchi and Bundy, or how such an understanding would support Patent Owner’s attorney arguments. Indeed, Patent Owner did not file any expert testimony in any of the three subject cases, despite that we must resolve the legal question of obviousness on the basis of underlying factual determinations, particularly the scope and content of the prior art and any differences between the claimed subject matter and the prior art from the vantage point of the skilled artisan. Graham, 383 U.S. at 17–18; see Pet. Reply 2 (“As a threshold matter, the Board’s findings in its Institution Decision should be carried forward to its final written decision because Patent Owner did not submit an expert declaration in support of its arguments.”); but see PO Sur-reply 1–4 (“[T]here is no requirement that a party rely exclusively on expert testimony in Post Grant Review proceedings or that attorney argument must be disregarded.”). To the contrary, Petitioner’s expert, Mr. Fennell, persuasively testifies in detail how and why the skilled artisan would have combined the teachings and suggestions of Yamaguchi and Bundy to achieve the invention of claim 1, including the features of limitation 1.3.B. See, e.g., Ex. 1003 ¶¶ 73–83, 96; Ex. 1046 ¶¶ 30–40. We find Mr. Fennell’s testimony credible (and uncontroverted).” slip op. at 40

  • Claim Construction › Intrinsic evidence (Phillips canons) › Plain and ordinary meaning to a POSITATerm construed patent owner constructionDecided for patent owner

    “Judge Rich’s guidance from over thirty years ago: in all aspects of claim construction, “the name of the game is the claim.” In re Hiniker, 150 F.3d at 1369. Claims 38 and 91 recite, in relevant part, a fire wall hanger wherein “the first and second extension flanges engag[e] each other along a juncture, the juncture arranged to be positioned within the two layers of ⅝-inch-thick drywall.” Ex. 1001, 15:28–33, 21:41–46 (emphasis added). On its face, this limitation requires not only that the first and second extension flanges “engage” each other, but also do so “along a juncture.” This recitation of the flanges “engaging” each other along a “juncture” (i.e., a place where things join) strongly supports interpreting the subject limitation to require physical contact (i.e., touching) at least along some portion of the flanges (such as shown in Figure 2, reproduced above). To the contrary, nothing in claims 38 or 91, or their underlying independent claims, suggests that two flanges “engaging each other along a juncture” means or even includes within its scope two flanges “symmetrical to each other across a juncture,” as urged by Petitioner (Pet. 59).” slip op. at 67

  • Obviousness (§103) › Graham factors (scope of art, differences, level of skill)UnpatentableUnpatentable

    “Petitioner persuasively argues, and we agree: There is certainly no requirement that the hanger contain a component “that prevents the back face of the drywall (or any portion thereof) being secured directly to the face of the wall framing” or that the back flange plane “define” or “bound” the space that receives drywall as alleged by Patent Owner. POR [PO Resp.], 25-26. As explained in the Petition and supported by Mr. Fennell’s testimony, Yamaguchi-Bundy’s modified hanger has an extension portion that is long enough to permit two layers of 5/8-inch-thick drywall (i.e., an extending flange having a length over 1 and 1/4 inches) to be received between the channel-shaped portion and the back flange plane. Pet., 28-30, 37; EX1003, ¶96. That is all that is required. EX1046, ¶32. Pet. Reply 12.” slip op. at 38

  Patent outcomesUS 11,649,626 mixed
  Claim construction§ 103 obviousnesscites Phillips · KSR · Graham
  Patents in suitUS 11,649,626
• Simpson Strong-Tie Company Inc. v. Columbia Insurance CompanySome claims unpatentable
  PTAB · Feb 28, 2025 · PGR2023-00047 · APJ Stephen E Belisle · PGR · Final written decision

  Claims 1–37, 39–90, and 92–105 are unpatentable as obvious; claims 38 and 91 were not shown unpatentable because the cited art did not teach flanges physically touching along a juncture.

  RulingsFinal written decision

  • Skill levelSkill level petitioner adoptedDecided for petitioner

    “In determining the level of ordinary skill in the art, various factors may be considered, including the “type of problems encountered in the art; prior art solutions to those problems; rapidity with which innovations are made; sophistication of the technology; and educational level of active workers in the field.” In re GPAC Inc., 57 F.3d 1573, 1579 (Fed. Cir. 1995) (citation omitted). The level of ordinary skill in the art also may be reflected by the prior art of record. See Okajima v. Bourdeau, 261 F.3d 1350, 1355 (Fed. Cir. 2001). Neither party argues that the outcome of these cases would differ based on our adoption of any particular definition of the level of ordinary skill in the art. Considering the subject matter of the ’626 patent, the background technical field, the prior art, and Petitioner’s proposed and undisputed definition of the skilled artisan, we apply the level of skill set forth above, which is consistent with the testimony of Mr. Fennell (Ex. 1003 ¶¶ 12–15).” slip op. at 20

  • Claim Construction › Intrinsic evidence (Phillips canons) › Plain and ordinary meaning to a POSITATerm construed board ownDecided for petitioner

    “But Patent Owner then urges us to narrow the meaning of “portion” itself such that “channel-shaped portion” requires “all portions of the hanger which directly bound the channel that receives the structural component.” PO Resp. 19 (emphases added). Patent Owner argues the Specification makes this “clear.” Id. (citing Ex. 1001, 2:28–31). Contrary to Patent Owner’s arguments (PO Resp. 19), we find no support in claim 1 to further narrow the interpretation of “portion” in “channel-shaped portion” to mean every portion of the hanger which directly bounds the channel that receives the structural component. See Ex. 1001, 12:14–36 (claim 1). We, like Petitioner, similarly find no support in the Specification or limited prosecution history (see Pet. 5–6), and Patent Owner does not direct us to any, showing that the inventor acted as its own lexicographer or disavowed any claim scope to allot this narrowed interpretation to the subject limitation. See Pet. Reply 3 (“Nowhere does the ’626 patent specification describe that all portions of the hanger directly bounding channel 52 constitute the channel-shaped portion.” (citing Ex. 1046 ¶¶ 16–18; Ex. 1001, 4:39–47)); PO Resp. 19. Further, as argued by Petitioner (Pet. Reply 4–5), Patent Owner’s proposed construction limiting “portion” to “all portions” of the hanger that “directly bound the channel that receives the structural component” could cause the “channel-shaped portion” on the same physical hanger to change depending on which type of structural component an installer were to choose to use in construction: Patent Owner’s claim construction improperly focuses on the wall assembly intended to be used with the recited hanger. The claims, however, are directed to a hanger, not a wall assembly. When assessing what part of a hanger constitutes a “channel-shaped portion” and an “extension portion,” [the skilled artisan] would consider the physical features of the hanger itself and the natural divisions between those features. [The skilled artisan] would not assess the claim language and its application to the prior art by speculating how an installer might later install the hanger with a joist or an entire wall assembly, which may differ from installation to installation. Pet. Reply 4 (citing Ex. 1046 ¶ 19). We find this defect further supports a broader interpretation of “channel-shaped portion” as discussed above. Accordingly, based on the complete record before us, we determine” slip op. at 34

  • Obviousness (§103) › Motivation to combine / reasonable expectation of successMotivation foundReasonable expectation foundDecided for petitioner

    “Petitioner argues, inter alia, that Yamaguchi teaches a joist hanger with an extension portion defining a space between its back flange and channel-shaped portion, and Bundy teaches to size a space created by an extension portion of its joist hanger to receive two layers of ⅝-inch-thick drywall between its back flange plane and channel-shaped portion. Pet. 16–18 (citing 1003 ¶¶ 75–78; Ex. 1007, 5:16–18, Fig. 1; Ex. 1041 (“Perspective View”; “Usage View”)); see id. at 17–18 (discussing “advantages” of two layers of 5/8" drywall as “fire resistance in a fire separation wall”). Petitioner argues the skilled artisan “would have been motivated to receive drywall between Yamaguchi’s back flange and channel-shaped portion to provide a shielded fire resistant wooden frame wall.” Pet. 18 (citing Ex. 1003 ¶¶ 78–79; Ex. 1007, 2:10–24); see id. ([“The skilled artisan] would have optimized the size of the spacing between Yamaguchi’s back flange and channel-shaped portion to accommodate two layers of 5/8”-thick-drywall according to the size preference described by Bundy for optimal fire protection and wall integrity.” (citing Ex. 1003 ¶ 80; Ex. 1007, 5:10–22)). Petitioner concludes: This modification to Yamaguchi would have been nothing more than applying a known technique (Bundy’s spacing a hanger seat from a wall frame by distance sufficient to accommodate two 5/8”-thick-drywall sheets for fire resistance) to a similar device (Yamaguchi’s hanger having a spacing of indeterminate length) to obtain the predictable result of a firewall hanger having a space between its channel-shaped portion and a wall frame large enough for receiving drywall therebetween, thereby “protect[ing] the structural members of a building.” Pet. 18 (citing Ex. 1007, 5:18–20; Ex. 1003 ¶ 80). Petitioner argues the skilled artisan would have had a reasonable expectation of success in modifying Yamaguchi as discussed above, “because doing so would still allow Yamaguchi’s hanger to perform its intended function of securing a joist to a wall.” Pet. 18 (citing Ex. 1041, 1; Ex. 1003 ¶ 81). Petitioner argues, “[r]ecognizing that Yamaguchi’s and Bundy’s hangers are constructed from sheet metal,” the skilled artisan “would have understood how to modify the size of Yamaguchi’s extension portions to accommodate two layers of 5/8”-thick-drywall while still allowing Yamaguchi’s hanger to secure a joist’s end to a frame wall.” Pet. 18–19 (citing Ex. 1003 ¶¶ 81–83; Ex. 1007, 4:47–51); see id. at 19–20 (discussing that although “Yamaguchi’s described setting is a sill plate,” the skilled artisan “would have been motivated to use Yamaguchi’s hanger on a wood frame wall in particular so that sheathing could be installed in the space behind the joist as taught by Bundy” (citing Ex. 1003 ¶¶ 81–82)). Based on the foregoing and the complete record before us, we find” slip op. at 46

  • Expert testimonyPetitioner expert creditedDecided for petitioner

    “artisan would have interpreted or understood the teachings of Yamaguchi and Bundy, as well as of the combination of those references, are unsupported attorney-arguments. See In re Pearson, 494 F.2d 1399, 1405 (CCPA 1974) (“Attorney’s argument in a brief cannot take the place of evidence.”). Patent Owner cites no evidence of how the skilled artisan would have understood the combined teachings of Yamaguchi and Bundy, or how such an understanding would support Patent Owner’s attorney arguments. Indeed, Patent Owner did not file any expert testimony in any of the three subject cases, despite that we must resolve the legal question of obviousness on the basis of underlying factual determinations, particularly the scope and content of the prior art and any differences between the claimed subject matter and the prior art from the vantage point of the skilled artisan. Graham, 383 U.S. at 17–18; see Pet. Reply 2 (“As a threshold matter, the Board’s findings in its Institution Decision should be carried forward to its final written decision because Patent Owner did not submit an expert declaration in support of its arguments.”); but see PO Sur-reply 1–4 (“[T]here is no requirement that a party rely exclusively on expert testimony in Post Grant Review proceedings or that attorney argument must be disregarded.”). To the contrary, Petitioner’s expert, Mr. Fennell, persuasively testifies in detail how and why the skilled artisan would have combined the teachings and suggestions of Yamaguchi and Bundy to achieve the invention of claim 1, including the features of limitation 1.3.B. See, e.g., Ex. 1003 ¶¶ 73–83, 96; Ex. 1046 ¶¶ 30–40. We find Mr. Fennell’s testimony credible (and uncontroverted).” slip op. at 40

  Patent outcomesUS 11,649,626 mixed
  Claim construction§ 103 obviousnesscites Phillips · KSR · Graham
  Patents in suitUS 11,649,626
• Apple Inc. v. RJ Technology LLCSome claims unpatentable
  PTAB · Feb 18, 2025 · IPR2023-01350 · APJ Jon B Tornquist · IPR · Final written decision

  Claims 5–10 are unpatentable as obvious; claims 11–14 were not shown unpatentable because the evidence did not establish the claimed capacity retention after 400 cycles.

  RulingsFinal written decision

  • Skill levelSkill level petitioner adoptedDecided for petitioner

    “Petitioner contends a person of ordinary skill in the art “would have held a Bachelor’s degree in chemistry or chemical engineering, with at least 4 years of experience in cell design, electrochemical techniques, and battery materials development.” Pet. 4. Petitioner further contends that a “Master’s Degree can substitute[] for some of the relevant experience,” and “[e]quivalent training with battery specific experience can accommodate other degreed fields.” Id. 9 The parties here do not address objective evidence of nonobviousness. Patent Owner does not dispute Petitioner’s definition of the ordinarily skilled artisan. PO Resp. 20. We adopt Petitioner’s unopposed definition of the person of ordinary skill in the art as it is consistent with the ’641 patent, the prior art of record, and the parties’ arguments.” slip op. at 6

  • Claim Construction › Threshold & procedure › Whether a term needs construction (O2 Micro)No construction neededOther

    “The parties agree that the term “charge cut-off voltage” is “the maximum voltage to which the battery is configured to be charged.” PO Resp 21–22; Pet. Reply 1. The parties dispute, however, whether the “charge cut-off voltage” is a “battery property” or “the voltage applied to the battery during charging.” PO Resp. 21–24; Pet. Reply 1–6. We need not resolve the precise meaning of “charge cut-off voltage” because there is no dispute that Yamaki discloses this limitation under either party’s interpretation of the claim term. Upon review of the prior art and the parties’ arguments, we determine that no terms of the ’641 patent require express construction. See Realtime Data, LLC v. Iancu, 912 F.3d 1368, 1375 (Fed. Cir. 2019) (“The Board is required to construe ‘only those terms . . . that are in controversy, and only to the extent necessary to resolve the controversy.’” (quoting Vivid Techs., Inc. v. Am. Sci. & Eng’g, Inc., 200 F.3d 795, 803 (Fed. Cir. 1999))); Pet. Reply 1 (asserting that the challenged claims are unpatentable under either parties’ construction of “charge cut-off voltage”).” slip op. at 7

  • Obviousness (§103) › Motivation to combine / reasonable expectation of successUnpatentableMotivation foundUnpatentable

    “Patent Owner’s arguments do not persuasively undermine Petitioner’s position. Sakamoto expressly discloses setting the ratio of negative to positive electrode active material in the range of 1.05 to 1.30. Ex. 1005 ¶ 8. Sakamoto also explains why this range is preferable, i.e., if the ratio is roughly equal “the charge-discharge cycle performance is insufficient due to significant deterioration from charging and discharging,” and if the ratio is 10 Citations to the prosecution history of Yamaki are to the page numbers added to the lower right corner of the document. too high “too much of the compound does not participate in charging and discharging.” Id. ¶¶ 6, 8. These disclosures are sufficient to explain why one of ordinary skill in the art would have found it obvious to select the ratios disclosed in Sakamoto in Yamaki. Id. ¶ 8 (providing a secondary battery with a capacity ratio between 1.05 and 1.30 and noting that by setting the ratio within this range the resulting secondary lithium battery is “safe due to low risk of heat being generated and an explosion occurring”). We also disagree that Sakamoto teaches away from elevated voltages or from increasing the amount of lithium in circulation. See PO Resp. 29. Contrary to Patent Owner’s arguments, Sakamoto provides no general teaching against using a charge cut-off voltage above 4.2 V, or against increasing the level of lithium in circulation. Nor does Sakamoto “criticize, discredit, or otherwise discourage” the claimed invention. In re Fulton, 391 F.3d 1195, 1201 (Fed. Cir. 2004). Rather, Sakamoto warns against setting the reversible capacities of the positive and negative electrode substantially equal as this may result in excess lithium plating on the surface of the electrode. Ex. 1005 ¶¶ 6, 8. We agree with Petitioner that this disclosure would lead one of ordinary skill in the art to design a battery with a higher capacity in the negative electrode active material than the positive electrode active material. Pet. 11–12.” slip op. at 14

  • Obviousness (§103) › Motivation to combine / reasonable expectation of success › Teaching awayTeaching away not foundDecided for petitioner

    “We also disagree that Sakamoto teaches away from elevated voltages or from increasing the amount of lithium in circulation. See PO Resp. 29. Contrary to Patent Owner’s arguments, Sakamoto provides no general teaching against using a charge cut-off voltage above 4.2 V, or against increasing the level of lithium in circulation. Nor does Sakamoto “criticize, discredit, or otherwise discourage” the claimed invention. In re Fulton, 391 F.3d 1195, 1201 (Fed. Cir. 2004). Rather, Sakamoto warns against setting the reversible capacities of the positive and negative electrode substantially equal as this may result in excess lithium plating on the surface of the electrode. Ex. 1005 ¶¶ 6, 8. We agree with Petitioner that this disclosure would lead one of ordinary skill in the art to design a battery with a higher capacity in the negative electrode active material than the positive electrode active material. Pet. 11–12.” slip op. at 15

  Patent outcomesUS 7,749,641 mixed
  Claim construction§ 103 obviousnesscites KSR · Graham
  Patents in suitUS 7,749,641
• Samsung Electronics Co., Ltd. / Apple Inc. v. RJ Technology LLCSome claims unpatentable
  PTAB · Jan 17, 2025 · IPR2024-00597 · APJ Jon B Tornquist · IPR · Final written decision

  Claims 2–4 and 6–18 are unpatentable as obvious over Abe and Guyomard, with claims 9–10 also obvious over Iwaizono; claims 1 and 5 were not shown unpatentable.

  RulingsFinal written decision

  • Skill levelSkill level petitioner adoptedDecided for petitioner

    “Petitioner contends that a person of ordinary skill in the art “would have had a Master’s degree in material science, chemical engineering, chemistry, or similar field with four years of experience designing testing, and building secondary lithium batteries.” Pet. 11 (citing Ex. 1002 ¶ 51). Petitioner further contends that a person of ordinary skill in the art would have been aware of “(1) positive electrode materials, (2) negative electrode materials, (3) separators, (4) electrolytes, (5) charge-discharge parameters, and (6) protection circuits, as well as ‘battery failure modes’ such as plating and the formation of dendrites.” Id. (citing Ex. 1002 ¶¶ 50–51). Patent Owner “does not dispute Petitioner’s level of ordinary skill.” PO Resp. 17. Upon review of the prior art of record and the parties’ arguments, we adopt Petitioner’s unopposed definition of the person of ordinary skill in the art as it is consistent with the disclosures of the ’641 patent and the prior art of record.” slip op. at 9

  • Claim Construction › Intrinsic evidence (Phillips canons) › Plain and ordinary meaning to a POSITATerm construed board ownDecided for petitioner

    “We also agree with Patent Owner that the charge cut-off voltage is not necessarily the applied voltage during charging. PO Resp. 20. Rather, depending on the charging protocol used and when in the charging cycle the voltage is applied, the applied voltage could be higher than the battery voltage. Ex. 2013; Ex. 2006 ¶ 91. For example, as discussed in more detail below with respect to the Uemura grounds, when fast charging using constant current is used and the charging rate is not slow, the applied voltage will be higher than the battery voltage when the constant current charging phase is stopped. Ex. 2006 ¶ 91; Ex. 2013. Likewise, during constant current/constant voltage charging, the applied voltage approximates the battery voltage only when the battery is nearly completely charged. Ex. 2013; Ex. 2006 ¶ 91. Thus, the applied voltage may be, but is not necessarily, the charge cut-off voltage. In view of the foregoing, we construe “charge cut-off voltage” in claims 1 and 5 as “the maximum value to which the battery is configured to be charged.” PO Resp. 18; Ex. 2008, 217:6–11; Pet. Reply 5. Contrary to Patent Owner’s arguments, however, we do not understand the phrase “configured to be charged” to necessarily represent a single voltage for the battery that is determined based on the structure and chemistry of the battery. Pet. Reply 4–5. Rather, the charge cut-off voltage is a selected potential, or voltage, of the battery or cell at the end of charging that is controlled by a circuit or device, such as a charger or control circuit within the battery. Ex. 1001, 9:50–55; Ex. 1048, 2, 7–8; Ex. 1008, 3:9–13. And, for the reasons discussed herein, the charge cut-off voltage may be, but is not necessarily, the same as the applied voltage during charging. PO Resp. 20.” slip op. at 15

  • Claim Construction › Threshold & procedure › Whether a term needs construction (O2 Micro)No construction neededNot reached

    “charge cut-off voltage “greater than 4.2 V but less than 5.8 V” and calculating a specific or theoretic capacity “with a charge cut-off voltage limited to 4.2” (claim 1) or “with a charge cut-off voltage set at 4.2 V” (claim 5). Ex. 1001, 16:56–61, 17:6–11. Although the parties dispute the precise scope of these claim terms, the parties agree that the first use of “charge cut-off voltage” in claims 1 and 5 refers to the potential of the battery as a whole (between the cathode and the anode), and not a half-cell voltage using lithium metal as a counter electrode.10 Tr. 17:1–3 (agreeing 10 With respect to the phrase “as calculated by a theoretic capacity with a charge cut-off voltage set at 4.2 V,” the parties in fact appear to be in that the first use of “charge cut-off voltage” in claim 5 refers to a full-cell voltage); Sur-reply 5; PO Resp. 22. We need not further construe the claims to resolve the disputes between the parties. See Nidec Motor Corp. v. Zhongshan Broad Ocean Motor Co., 868 F.3d 1013, 1017 (Fed. Cir. 2017) (quoting Vivid Techs., Inc. v. Am. Sci. & Eng’g, Inc., 200 F.3d 795, 803 (Fed. Cir. 1999) (“[O]nly those terms need be construed that are in controversy, and only to the extent necessary to resolve the controversy.”)).” slip op. at 16

  • Expert testimonyPatent owner expert creditedDecided for patent owner

    “Given Mr. Juzkow’s unambiguous testimony that Uemura uses constant current charging that would stop when the applied voltage reached 11 The chart is reproduced from SAFT, Charging your lithium-ion batteries: 5 expert tips for a longer lifespan, (https://www.saft.com/energizing-iot/charging-your-lithium-ion-batteries-5-expert-tips-longerlifespan#:~: text=When%20the%20battery%20provides%20current,This%20restore s%20the%20battery's%20capacity). 4.3 V, as well as Dr. Yao’s persuasive testimony that Uemura’s constant charging rate is not slow, we credit the testimony of Dr. Yao that one of ordinary skill in the art would have understood that the internal voltage to which the battery of Uemura was charged is less than 4.3 V. Ex. 2006 ¶ 119. In particular, Dr. Yao persuasively testifies that one of ordinary skill in the art would have believed that the charge cut-off voltage was no more than 4.2 V, and most likely equal to “about 4 V.” Id. ¶¶ 119–122.” slip op. at 21

  Patent outcomesUS 7,749,641 mixed
  Claim construction§ 102 anticipation§ 103 obviousnesscites KSR · Graham
  Patents in suitUS 7,749,641
• Samsung Electronics Co., Ltd. / Apple Inc. v. RJ Technology LLCSome claims unpatentable
  PTAB · Jan 17, 2025 · IPR2023-01183 · APJ Jon B Tornquist · IPR · Final written decision

  Claims 2–4 and 6–18 are unpatentable as obvious over Abe and Guyomard, with claims 9 and 10 also obvious over Iwaizono; claims 1 and 5 were not shown unpatentable.

  RulingsFinal written decision

  • Skill levelSkill level petitioner adoptedDecided for petitioner

    “Petitioner contends that a person of ordinary skill in the art “would have had a Master’s degree in material science, chemical engineering, chemistry, or similar field with four years of experience designing testing, and building secondary lithium batteries.” Pet. 11 (citing Ex. 1002 ¶ 51). Petitioner further contends that a person of ordinary skill in the art would have been aware of “(1) positive electrode materials, (2) negative electrode materials, (3) separators, (4) electrolytes, (5) charge-discharge parameters, and (6) protection circuits, as well as ‘battery failure modes’ such as plating and the formation of dendrites.” Id. (citing Ex. 1002 ¶¶ 50–51). Patent Owner “does not dispute Petitioner’s level of ordinary skill.” PO Resp. 17. Upon review of the prior art of record and the parties’ arguments, we adopt Petitioner’s unopposed definition of the person of ordinary skill in the art as it is consistent with the disclosures of the ’641 patent and the prior art of record.” slip op. at 9

  • Claim Construction › Intrinsic evidence (Phillips canons) › Plain and ordinary meaning to a POSITATerm construed board ownDecided for petitioner

    “constructions. First, we agree with Petitioner that the ’641 patent indicates that the charge cut-off voltage selected for a particular battery need not be a fixed property of the battery or something that is set by the design and chemistry of the battery. Consistent with this conclusion, the ’641 patent discloses that a “charging device controls the charge cut-off voltage of the single lithium-ion cell within a range from 4.3 V to 5.8 V.” Ex. 1001, 9:50– 55. This strongly suggests that the charge cut-off voltage is controlled by the charger and is not necessarily an inherent property of the battery. Patent Owner contends that this is merely an unclaimed embodiment, but the relevant disclosure states that the charging device for the “present invention” may be any type of device “with the proviso that said charging device controls the charge cut-off voltage.” Id. at 9:50–53.” slip op. at 12

  • Claim Construction › Threshold & procedure › Whether a term needs construction (O2 Micro)No construction neededNot reached

    “charge cut-off voltage “greater than 4.2 V but less than 5.8 V” and calculating a specific or theoretic capacity “with a charge cut-off voltage limited to 4.2” (claim 1) or “with a charge cut-off voltage set at 4.2 V” (claim 5). Ex. 1001, 16:56–61, 17:6–11. Although the parties dispute the precise scope of these claim terms, the parties agree that the first use of “charge cut-off voltage” in claims 1 and 5 refers to the potential of the battery as a whole (between the cathode and the anode), and not a half-cell voltage using lithium metal as a counter electrode.10 Tr. 17:1–3 (agreeing 10 With respect to the phrase “as calculated by a theoretic capacity with a charge cut-off voltage set at 4.2 V,” the parties in fact appear to be in that the first use of “charge cut-off voltage” in claim 5 refers to a full-cell voltage); Sur-reply 5; PO Resp. 22. We need not further construe the claims to resolve the disputes between the parties. See Nidec Motor Corp. v. Zhongshan Broad Ocean Motor Co., 868 F.3d 1013, 1017 (Fed. Cir. 2017) (quoting Vivid Techs., Inc. v. Am. Sci. & Eng’g, Inc., 200 F.3d 795, 803 (Fed. Cir. 1999) (“[O]nly those terms need be construed that are in controversy, and only to the extent necessary to resolve the controversy.”)).” slip op. at 16

  • Expert testimonyPatent owner expert creditedPetitioner expert discountedDecided for patent owner

    “Given Mr. Juzkow’s unambiguous testimony that Uemura uses constant current charging that would stop when the applied voltage reached 11 The chart is reproduced from SAFT, Charging your lithium-ion batteries: 5 expert tips for a longer lifespan, (https://www.saft.com/energizing-iot/charging-your-lithium-ion-batteries-5-expert-tips-longerlifespan#:~: text=When%20the%20battery%20provides%20current,This%20restore s%20the%20battery's%20capacity). 4.3 V, as well as Dr. Yao’s persuasive testimony that Uemura’s constant charging rate is not slow, we credit the testimony of Dr. Yao that one of ordinary skill in the art would have understood that the internal voltage to which the battery of Uemura was charged is less than 4.3 V. Ex. 2006 ¶ 119. In particular, Dr. Yao persuasively testifies that one of ordinary skill in the art would have believed that the charge cut-off voltage was no more than 4.2 V, and most likely equal to “about 4 V.” Id. ¶¶ 119–122. Petitioner argues that because the battery of Uemura is charged “to” a maximum voltage of 4.3 V, Uemura discloses the claimed charge cut-off voltage under either Petitioner’s or Patent Owner’s construction of the term. Pet. Reply 11–12 (citing Ex. 1009 ¶ 81; Ex. 1044 ¶¶ 56–59). This argument is not persuasive because Mr. Juzkow unambiguously testified that charging in Uemura stopped when the applied voltage reached 4.3 V, and Uemura discloses that the battery was charged “at” a voltage ranging from 4.3 V to 2.0 V, not “to” such a voltage. Ex. 1009 ¶ 81; Ex. 2008, 113:2–13; Ex. 2006 ¶ 119 n.64; Sur-reply 9. In view of the foregoing, we determine that Petitioner has not demonstrated by a preponderance of the evidence that Uemura anticipates independent claims 1 and 5 of the ’641 patent.” slip op. at 21

  Patent outcomesUS 7,749,641 mixed
  Claim construction§ 102 anticipation§ 103 obviousnesscites KSR · Graham
  Patents in suitUS 7,749,641
• Chongqing Yanmei Technology Co., Ltd. v. Terves, LLCSome claims unpatentable
  PTAB · Aug 27, 2024 · IPR2023-00521 · APJ Jon B Tornquist · IPR · Final written decision

  Claims 19–61, 63–77, and 79 are unpatentable as anticipated by Doud; claims 78, 80, and 81 are not shown unpatentable. The contingent motion to amend is granted in part and denied in part.

  RulingsFinal written decision

  • Skill levelSkill level petitioner adoptedDecided for petitioner

    “Petitioner contends that a person of ordinary skill in the art “would have at least a Ph.D. in chemistry, metallurgy, or material science or material engineering” or, in the alternative, “would have a Bachelor of Science or Master of Science degree in one of these disciplines plus experience involving the use and design of dissolvable metal alloys for use in creating tools and other downhole parts for well drilling or completion activities.” Pet. 13–14. Patent Owner does not oppose Petitioner’s contentions regarding the level of ordinary skill in the art. PO Resp. 12 n.4. Upon review of the prior art of record and the parties’ arguments, we adopt Petitioner’s unopposed definition of the ordinarily skilled artisan as it is consistent with the prior art of record.” slip op. at 7

  • Claim Construction › Threshold & procedure › Whether a term needs construction (O2 Micro)No construction neededDecided for patent owner

    “With respect to claim 19, Petitioner proposes constructions for the terms “in situ precipitate” and “a plurality of particles of said in situ precipitate having a size of no more than 50 µm.” Pet. 11–12. With respect to claims 76–81, Petitioner proposes a construction for the term “wherein said additive material includes one or more metal materials selected from the group consisting of 0.1–35 wt. % copper, 0.1–24.5 wt. % nickel and 0.1–20 wt. % cobalt.” Id. at 13. Patent Owner contends no claims require construction for purposes of this Decision. PO Resp. 12 n.4, 17–18; Mot. 16–17. Upon review of the prior art of record, we determine that no claim terms require express construction for purposes of this Final Written Decision. See Realtime Data, LLC v. Iancu, 912 F.3d 1368, 1375 (Fed. Cir. 2019) (“The Board is required to construe ‘only those terms . . . that are in controversy, and only to the extent necessary to resolve the controversy.’”) (quoting Vivid Techs., Inc. v. Am. Sci. & Eng’g, Inc., 200 F.3d 795, 803 (Fed. Cir. 1999)).” slip op. at 8

  • Disclosure Requirements (§112) › Written description (Ariad)Written description inadequateWritten description adequateMixed

    “Ex. 2027, 20:25–21:5 (emphasis added). The disclosure that the “magnesium composite” of “[t]he present invention” “includes at least 50 wt% magnesium” is unambiguous and constitutes strong evidence that the inventors were not in possession of a magnesium composite with less than 50 wt. % magnesium, or additive concentrations above 50 wt. %. See SciMed Life Systems, Inc. v. Advanced Cardiovasular Systems, Inc., 242 F.3d 1337, 1343 (Fed. Cir. 2001) (noting that a description of the “present invention” as having a particular structure “is strong evidence that the claims should not be read to encompass the opposite structure”). Consistent with this conclusion, the original claims of the ’295 application all limited the additive material in the composite to 0.05 wt %–45 wt %. Ex. 2027, 26:1– 13, 29:9–15. Likewise, in each example where copper, nickel, or cobalt additives are used in the range recited in the proposed substitute claims, the magnesium composite is “over 50 wt% magnesium,” and any claims that do not require this range of magnesium are limited to an additive range of “about 0.05 wt%–45 wt% of said mixture.”8 Ex. 2027, 6:13–7:4, 7:16–19, 8 Written description support is considered from the view point of the ordinarily skilled artisan. Ariad Pharms., Inc. v. Eli Lilly and Co., 598 F.3d 1336, 1351 (Fed. Cir. 2010) (en banc). Patent Owner, bearing the burden to show written description support in any priority application for which it seeks the benefit of its filing date, provides no testimony from an ordinarily skilled artisan regarding written description support in the ’295 application, or any evidence to show what such an artisan would conclude from the express disclosures of the ’295 application. Lectrosonics, Paper 15 at 7; In re NTP, 654 F.3d 1268, 1276 (Fed. Cir. 2011) (noting that “a patent’s claims are not entitled to an earlier priority date merely because the patentee claims priority . . . Rather, for a patent’s claims to be entitled to an earlier priority date, the patentee must demonstrate that the claims meet the requirements of 35 U.S.C. § 120”). Where there is any ambiguity in the disclosures of the ’295 application, the absence of supporting testimony tends to cut against 26:2–31:2; see Ex. 1005 ¶¶ 12, 13, 18, 19, 16–21, 26, 28, claims 16–21, 26– 28. In view of the foregoing, we are not persuaded that Patent Owner has demonstrated that the inventors of the priority applications were in possession of a magnesium cast composite that included less than 50 wt. % magnesium, or greater than 50 wt. % additives. As proposed substitute claim 104 encompasses a magnesium cast composite with up to 90 wt. % additives, and therefore as little as 10 wt. % magnesium, Patent Owner has not demonstrated that the full scope of this claim finds written description support in any application prior to the ’915 application, filed on October 12, 2018.” slip op. at 17

  • Disclosure Requirements (§112) › Definiteness (Nautilus)DefiniteIndefiniteMixed

    “The definiteness requirement of § 112(a) is satisfied when “a patent’s claims, viewed in light of the specification and prosecution history, inform those skilled in the art about the scope of the invention with reasonable clarity.” Nautilus, Inc. v. Biosig Instruments, Inc., 572 U.S. 898, 910 (2014); see 37 C.F.R. § 42.100(b) (changing the claim construction standard used to review a claim proposed in a motion to amend from the broadest reasonable construction to the “same construction standard that would be used to construe the claim in a civil action under 35 U.S.C. [§] 282(b)”). Proposed substitute claim 104 generically requires “in situ precipitate” and also a specific type of in situ precipitate: “in situ galvanically-active intermetallic precipitate.” Mot. Appendix A. Although this claim would have best been clarified by Patent Owner after seeking preliminary guidance on its Motion to Amend, upon review of the written description, claims, and figures of the ’740 patent, as well as Patent Owner’s clarification in its Reply to the Opposition, we agree with Patent Owner that one of ordinary skill in the art would have understood that the “in situ galvanically-active intermetallic precipitate” is merely a more complete description of the “in situ precipitate” mentioned earlier in the sentence. Mot. Reply 4. As such, we do not find that this part of proposed substitute claim renders claim 104 indefinite.” slip op. at 22

  Patent outcomesUS 10,689,740 mixed
  Claim construction§ 102 anticipation§ 103 obviousness§ 112 disclosurecites Graham · Nautilus
  Patents in suitUS 10,689,740

Holdings, summaries, rulings, issues, outcomes, winners and claim constructions shown for a decision were generated by a large language model reading the opinion. They are a guide to the decision, not the decision. Confirm every one against the court's own text before relying on it. Outcomes read from the patent owner’s side. Party names are extracted from the decision and are missing on about 900 short Director denials and scans, which carry the trial number instead.