• Solus Advanced Materials Co., Ltd. v. SK Nexilis Co., Ltd.Instituted
  PTAB · Apr 25, 2025 · IPR2024-01463 · APJ David Cotta · IPR · Institution

  The Board instituted inter partes review of claims 1–10 on all asserted grounds, finding a reasonable likelihood of success on at least one claim.

  RulingsInstitution decision

  • PTAB / AIA Trials › Discretionary denial › Fintiv (parallel litigation)Decided for petitioner

    “predict how the district court in the related district court litigation will proceed because the court may determine whether or not to stay any individual case . . . based on a variety of circumstances and facts beyond our control and to which the Board is not privy.” Sand Revolution II LLC v. Cont’l Intermodal Grp., IPR2019-01393, Paper 24, 7 (PTAB June 16, 2020) (informative). We decline to speculate on how the court may rule on the pending motion to stay. Accordingly, this factor is neutral.” slip op. at 13

  • PTAB / AIA Trials › Institution threshold (reasonable likelihood / more likely than not)InstitutedInstituted

    “Under 35 U.S.C. § 314(a), inter partes review may not be instituted unless the Petition “shows that there is a reasonable likelihood that the petitioner would prevail with respect to at least 1 of the claims challenged in the petition.” Petitioner has established a reasonable likelihood of prevailing on its assertion that at least one of the challenged claims is unpatentable based on the grounds advanced here. We decline to deny the Petition on a discretionary basis as requested by Patent Owner. Thus, for reasons explained below, we institute inter partes review of claims 1–10 of the ’706 patent.” slip op. at 2

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

    “TC(220), and ΔRz/Ra are result effective variables and that copper foils having ΔPD, TC(220), and ΔRz/Ra values that meet the values recited in claim 1 have advantageous properties. See, e.g., Ex. 1005 ¶ 45 (Kim ’761, disclosing that preferably the “difference in peak count roughness Rpc between the shiny surface . . . and the matte surface . . . of the electrolytic copper foil . . . is preferably 60 or less” because “when the difference in the peak count roughness Rpc exceeds 60 capacity maintenance of the secondary battery is deteriorated.”);15 Ex. 1007, 3:16–23, 4:14–23 (Cheng, disclosing that the foils of Cheng’s invention have (220) and (311) surfaces that provide increased elongation and that solve a high roughness problem that rendered traditional products unsuitable for use in a lithium ion secondary battery), 10:27–34 (Cheng, disclosing that in the foils of Cheng’s invention “the roughness difference between both sides was extremely small” and thus “it was . . . not easy for the electrolytic copper foil to break or fracture during the charging-discharging cycles and the life of a battery is thus increased”), Tables 3 & 4 (Cheng, disclosing embodiments and comparative examples with TC(220) values meeting the requirements of claim 1); Ex. 1008, 6:36–44 (Wolski, disclosing that “the surface roughness Rz at the matte side of the untreated copper foil of the present invention is the same or smaller than the surface roughness Rz at the shiny side . . . so that the surface treated copper foil . . . becomes more low-profiled . . . whereby it becomes a foil having a large etching factor”), 9:1–29 & Table 2 (Wolski, disclosing 15 Dr. Randall testifies that “Kim ’761’s peak count roughness Rpc corresponds to the peak density PD of the ’706 patent.” Ex. 1003 ¶ 52. At this stage in the proceeding, this testimony is unrebutted. 38 embodiments meeting the ΔRz/Ra of claim 1, describing them as having “matte side roughnesses” that are “sufficiently small,” and as having “excellent” “high temperature elongation characteristics”), 11:37–41 (Wolski, describing comparative examples as having “large” matte side roughnesses “whereby etching factors are not good”), 12:12–27 (Wolski, teaching that “as compared with a conventional untreated copper foil, both surfaces of the untreated copper foil obtained by [Wolski’s] invention are flat” resulting in a low profile foil that has “excellent elongations at room temperature and high temperature and also high tensile strength”). The teachings in the prior art support the presently unrebutted testimony of Dr. Randall explaining why the POSA would have been motivated to modify Kim ’761’s copper foil to have the claimed TC(220) and ΔRz/Ra. Ex. 1003 ¶¶ 66–68, 71–74; Pfizer Inc., v. Sanofi Pasteur Inc., 94 F.4th 1341, 1348 (Fed. Cir. 2024) (“Where [a gap in prior art] includes a parameter not necessarily disclosed in the prior art, it is not improper to consider whether or not it would have been recognized as result-effective. If so, then the optimization of that parameter is ‘normally obvious.’”). Accordingly, we are not persuaded by Patent Owner’s argument that Petitioner failed to articulate a sufficient motivation to combine the references. To the contrary, the preliminary record presents a strong showing that the POSA would have been motivated to combine the references in the manner described in the Petition.” slip op. at 38

  • Skill levelSkill level petitioner adoptedDecided for petitioner

    “At this stage of the proceeding, Patent Owner does not contest Petitioner’s definition of the level of skill in the art. Prelim. Resp. 4 (“For purposes of this Preliminary Response, Patent Owner applies Petitioner’s level of skill for a person of ordinary skill in the art”). Petitioner’s definition appears to be consistent with the field of the invention reflected in the prior art of record and the disclosure of the ’706 patent. Accordingly, for purposes of this Decision, we adopt Petitioner’s proposed definition of the person of ordinary skill in the art.” slip op. at 21

  Claim construction§ 103 obviousnessDiscretionary denialcites KSR · Graham
  Patents in suitUS 11,591,706
• Solus Advanced Materials Co., Ltd. v. SK Nexilis Co., Ltd.Institution denied
  PTAB · Apr 25, 2025 · IPR2024-01462 · APJ Jo-Anne M Kokoski · IPR · Institution

  The Board denied institution because Petitioner did not show a reasonable likelihood that claims 1–8 were unpatentable under the asserted obviousness grounds.

  RulingsInstitution decision

  • Skill levelSkill level petitioner adoptedDecided for petitioner

    “experience working on the development of materials or components for electronic devices such as batteries.” Pet. 2. Petitioner further contends that “[a]dditional education, such as a graduate degree, could compensate for less work experience, and additional work experience could compensate for less formal education.” Id. Patent Owner states that, “[f]or purposes of this Preliminary Response, Patent Owner applies Petitioner’s level of skill for a person of ordinary skill in the art.” Prelim. Resp. 4. For purposes of this Decision, we adopt Petitioner’s undisputed proposed definition because it appears to be consistent with the cited prior art and the disclosure of the ’014 patent. See Okajima v. Bourdeau, 261 F.3d 1350, 1355 (Fed. Cir. 2001) (explaining that specific findings regarding ordinary skill level are not required “where the prior art itself reflects an appropriate level and a need for testimony is not shown” (quoting Litton Indus. Prods., Inc. v. Solid State Sys. Corp., 755 F.2d 158, 163 (Fed. Cir. 1985))).” slip op. at 8

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

    “customary meaning of such claim as understood by one of ordinary skill in the art and the prosecution history pertaining to the patent.” 37 C.F.R. § 42.100(b). Under this standard, claim terms are generally given their plain and ordinary meaning as would have been understood by a person of ordinary skill in the art at the time of the invention and in the context of the entire patent disclosure. Phillips v. AWH Corp., 415 F.3d 1303, 1313 (Fed. Cir. 2005) (en banc). Only those terms in controversy need to be construed, and only to the extent necessary to resolve the controversy. Realtime Data LLC v. Iancu, 912 F.3d 1368, 1375 (Fed. Cir. 2019). in this proceeding.” Pet. 3. Patent Owner contends that “[t]he Board need not construe any term in order to determine that institution should be denied.” Prelim. Resp. 4. Based on the record before us, we determine that no claim term requires express construction for purposes of this Decision. See Realtime Data, 912 F.3d at 1375.” slip op. at 8

  • PTAB / AIA Trials › Institution threshold (reasonable likelihood / more likely than not)Institution denied meritsInstitution denied

    “For these reasons, we are not persuaded that Petitioner sufficiently establishes that a POSITA would have been motivated to modify Hanafusa in light of Dobashi with a reasonable expectation of success as Petitioner contends. Accordingly, we determine that Petitioner fails to demonstrate a reasonable likelihood of prevailing in its assertion that the subject matter of claim 1, and claims 4 and 8 that depend therefrom, would have been obvious over the combined teachings of Hanafusa and Dobashi.” slip op. at 18

  • Obviousness (§103) › Motivation to combine / reasonable expectation of successMotivation not foundNot shown unpatentableNot shown unpatentable

    “Petitioner also focuses on Hanafusa’s teaching that all known methods can be used to make a rough surface low-profile, and Dobashi’s teaching that RSm can be used as an indicator for judgment of the surface, to support its contention that a POSITA would have been motivated to apply Dobashi’s RSm to further achieve Hanafusa’s purpose, without explaining how and why that would be the case. In particular, neither Petitioner nor Dr. Josefowicz adequately explain why a POSITA looking for ways to make Hanafusa’s surface roughness low-profile would look to methods to achieve as the period of waviness, RSm can also be used as an indicator for judgment of the surface.” Ex. 1005, 2:66–3:1, 6:23–26. Dobashi explains that waviness is “an indicator for determining whether the fine pattern forming performance is good or bad,” and “[t]he surface has small waviness and is smooth when RSm is large, and the surface has large waviness and is rough when RSm is small.” Id. at 3:1–3, 6:27–29. Dobashi also teaches that surface roughness Rzjis is used as a low-profile indicator. Ex. 1005, 2:66– 3:1. Dobashi, therefore, teaches that RSm is an indicator of surface waviness, which Dobashi explains is different than surface roughness. Id. at 2:66–3:3, 6:23–29. Given these teachings in Dobashi, neither Petitioner nor Dr. Josefowicz sufficiently explains how or why a POSITA would have been motivated to implement Dobashi’s RSm values to make Hanafusa’s surface roughness low-profile. See Pet. 10–12; Ex. 1003 ¶¶ 46–52.” slip op. at 14

  Claim construction§ 103 obviousnesscites Phillips · KSR
  Patents in suitUS 11,346,014
• Dropbox, Inc. / Microsoft Corporation v. Datanet, LLCAll claims unpatentable
  PTAB · Apr 25, 2025 · IPR2024-00079 · APJ George R Hoskins · IPR · Final written decision

  Claims 1–6, 8–20, and 23–31 are unpatentable as obvious over Kenley and Long; the Board did not reach the alternative ground.

  RulingsFinal written decision

  • Expert testimonyOther
  • Skill levelSkill level petitioner adoptedDecided for petitioner
  • Claim Construction › Threshold & procedure › Whether a term needs construction (O2 Micro)Term construed petitioner constructionDecided for petitioner
  • Obviousness (§103) › Motivation to combine / reasonable expectation of successMotivation foundDecided for petitioner

    “(5) Analysis and Conclusion as to Motivation to Combine We conclude a preponderance of the evidence supports Petitioner’s” slip op. at 48

  Patent outcomesUS 9,218,348 unpatentable
  Claim construction§ 103 obviousnesscites Phillips · KSR · Graham
  Patents in suitUS 9,218,348
• Dropbox, Inc. / Microsoft Corporation v. Datanet, LLCAll claims unpatentable
  PTAB · Apr 25, 2025 · IPR2024-00078 · APJ George R Hoskins · IPR · Final written decision

  Claims 1–6 and 8–11 are unpatentable as obvious over Kenley and Long; the Board did not reach the alternative ground.

  RulingsFinal written decision

  • Claim Construction › Intrinsic evidence (Phillips canons) › Prosecution history disclaimer / disavowalTerm construed petitioner constructionDecided for petitioner

    “the ’478 patent, the applicant clearly and plainly informed the Office that an “[e]xemplary” embodiment of “searching the first temporary storage location for the archive file,” as recited in then-pending claim 34 and step [1.4] of issued claim 1, is found at specifically cited portions of the ’478 patent specification. See Ex. 1002, 147 (“Exemplary support may be found at . . . .”). Those specifically cited disclosures describe how smart data manager 15 “examines” input buffer 20 “for the presence of archive files” or equivalently “to determine whether any archive files are stored therein.” Ex. 1001, Fig. 2A (step 100), 5:39–42, 6:19–27. Based on this prosecution history, we conclude that in one embodiment of claim 1, searching the first temporary storage location for the archive file per step [1.4] is satisfied by examining the first temporary storage location for the presence of an archive file. We reach this conclusion even if the referenced portions of the ’478 patent specification are not regarded as being definitional with respect to the “searching” requirements of step [1.4].” slip op. at 26

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

    “(5) Analysis and Conclusion as to Motivation to Combine We conclude a preponderance of the evidence supports Petitioner’s” slip op. at 51

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

    “Accordingly, we conclude Petitioner has shown by a preponderance of” slip op. at 77

  Patent outcomesUS 8,473,478 unpatentable
  Claim construction§ 103 obviousnesscites Phillips · KSR · Graham
  Patents in suitUS 8,473,478
• Dropbox, Inc. / Microsoft Corporation v. Datanet, LLCAll claims unpatentable
  PTAB · Apr 25, 2025 · IPR2024-00080 · APJ Bach V Hoang · IPR · Final written decision

  Claims 1–21 are unpatentable: claims 1–8, 10–16, and 18–21 as obvious over Sweat, and claims 9 and 17 as obvious over Sweat and Schneider.

  RulingsFinal written decision

  • Skill levelSkill level petitioner adoptedDecided for patent owner

    “Patent Owner does not dispute this assessment. See PO Resp. 10–11 (“Patent Owner agrees to this definition proposed in the Petition.”). Having considered the record, we adopt Petitioner’s proposed level of skill, as articulated above. We are satisfied that Petitioner’s proposal comports with the level of skill necessary to understand and implement the teachings of the ’850 Patent. Accord Inst. Dec. 7–8.” slip op. at 8

  • Claim Construction › Intrinsic evidence (Phillips canons) › Plain and ordinary meaning to a POSITAPlain and ordinary meaningDecided for petitioner

    “construction principles, and does not revise or ignore the explicit language of the claims.”). In that vein, “[p]roper claim construction . . . demands interpretation of the entire claim in context, not a single element in isolation.” Hockerson–Halberstadt, Inc. v. Converse Inc., 183 F.3d 1369, 1374 (Fed.Cir.1999); accord Phillips, 415 F.3d at 1314 (“[T]he context in which a term is used in the asserted claim can be highly instructive.”). Patent Owner’s interpretation that “the current version” requires two current versions — one locally stored current version and a corresponding remotely stored current version — asks us to improperly adopt a claim construction which ignores explicit claim language and context in order to read unrecited features into the claim. The limitation in question, more fully and in better context, recites “storing the selected previous version . . . as the current version on the local storage location.” Ex. 1001, 9:24–26 (emphasis added). The express language shows that the claim is specifically directed to the current version on the local storage location and not any possible remote current version. As such, even if there were a “current version on the remote storage location” which corresponds to and is kept in parity with the current version on the local storage location, i.e., a backup copy of the locally stored current version, the claim does not recite that feature, establishing that it does not require that feature. Further, as to the context of the claim, the term in question is part of a recited method of restoring a file to a previous version of the file on a local computational machine, rather than a method for maintaining parity of remotely stored backup files during that restoration process. See id. at 8:63–9:28. As such, the explicitly recited claim language and the context of the claim do not support reading an unrecited remote backup feature into the claim.” slip op. at 11

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

    “been obvious to use the “Download” feature described by Sweat to replace a corrupted or otherwise compromised file, thus meeting “storing the selected previous version . . . as the current version on the local storage location.” Pet. 60–62. First, regarding the technical operation of Sweat’s download function, Petitioner explains that a user “download[s] a version of [a] file from the server 106 to the local computer 104” and selects a local “target location to save the selected file.” Id. at 61 (citing Ex. 1006, 10:58–63). Sweat’s download function “[c]opies the file or folder to the user’s local computer” and can “overwrite files that exist on the user’s local computer, as desired.” Ex. 1006, 5:49–55. From those disclosures, Petitioner asserts it would have been obvious to use Sweat’s download function “to restore a previous version of a file by copying the file to the user’s local computer and overwriting the current version of the file on the user’s local computer, so as to save the restored file as the new current version of that file.” Pet. 62 (citing Ex. 1004 ¶¶ 125– 126). Petitioner explains that the download function would be used in such a manner where a user “desire[s] to restore a previous version of the file to replace the current version for example, in the case where the newest version of the file has become corrupted or where desired data has been deleted from” slip op. at 21

  • Obviousness (§103) › KSR rationalesUnpatentableUnpatentable

    “We agree with Petitioner. Sweat’s description of its “Viewing Files” feature explains that “a user must install the appropriate viewer to open and view drawing files.” Ex. 1006, 23:38–41. Sweat lists examples of such viewers including software applications such as Volo™ View Express. Id. at 23:45–46, 23:63–67. While Sweat does not list a CAD file creating application in its exemplary list of viewers in that “Viewing Files” section (see id. at 23:38–24:35), elsewhere, Sweat states that a CAD application, e.g., “AutoCAD®,” is “drawing/viewing software utilized by the viewer” (id. at 23:29–33). Furthermore, Petitioner’s declarant offers undisputed testimony that AutoCAD is software for creating CAD drawing files and can also be used to view those created CAD drawing files. Ex. 1024 ¶ 39 (citing Ex. 1029, 19–23, 541–542). On that evidence, we agree a POSITA would understand that Sweat describes using a viewer to preview previous versions of CAD drawing files and that Sweat also describes AutoCAD (which creates CAD drawing files) can be used as a viewer. In light of that understanding, we agree it would have been obvious to use AutoCAD, i.e., “an application that created the file,” to preview previous versions of that file. Pet. 62–63. We also agree that it would have been rational to do so because the same already locally available software application which created the file could then be used to view the file. Id.; see Ex. 1004 ¶ 128. Owner dismisses Petitioner’s obviousness argument as “irrelevant,” and, instead, argues that Sweat does not disclose the claimed features. PO Sur- Reply 16–17; see PO Resp. 39–40. In particular, Patent Owner argues Sweat “discloses the use of specialized viewing software to view the related file” and emphasizes that “CAD software is clearly not being used in Sweat’s ‘View in Window’ functionality” PO Resp. 39–40 (citing Ex. 1006, 23:39–51); PO Sur-Reply 17. While it may be the case that Sweat does not outright disclose the features recited in the claim, those arguments do not show fault in Petitioner’s case that the claimed features would have been obvious. See CRFD Rsch., Inc. v. Matal, 876 F.3d 1330, 1345 (Fed. Cir. 2017) (“Even if a reference’s teachings are insufficient to find anticipation, that same reference’s teachings may be used to find obviousness.”); Nike, Inc. v. Adidas AG, 812 F.3d 1326, 1335 (Fed. Cir. 2016) (“A claimed invention may be obvious even when the prior art does not teach each claim limitation.”), overruled on other grounds by Aqua Prods., Inc. v. Matal, 872 F.3d 1290 (Fed. Cir. 2017) (en banc). Accordingly, we are persuaded that Petitioner has shown, by a preponderance of the evidence, that claim 2 is obvious over Sweat.” slip op. at 28

  Patent outcomesUS 10,585,850 unpatentable
  Claim construction§ 103 obviousnesscites Graham
  Patents in suitUS 10,585,850
• Sterlite Technologies Inc. v. Afl Telecommunications, LLC.Institution denied
  PTAB · Apr 9, 2025 · IPR2025-00127 · APJ Josiah C Cocks · IPR · Institution

  The Board denied institution because Petitioner did not show a reasonable likelihood that claims 1–4, 8, or 13 were unpatentable over either proposed obviousness ground.

  RulingsInstitution decision

  • PTAB / AIA Trials › Institution threshold (reasonable likelihood / more likely than not)Institution denied meritsInstitution denied

    “At this preliminary stage, we determine whether the information presented shows a reasonable likelihood that Petitioner would prevail in establishing that at least one of the challenged claims would have been unpatentable over the proposed prior art. We analyze the asserted grounds with the above-noted principles in mind.” slip op. at 10

  • Skill levelOther

    “B. Level of Ordinary Skill in the Art As noted above, resolving the question of obviousness requires determination of the level of ordinary skill in the art. Graham, 383 U.S. at 17–18. Here, however, as Patent Owner observes (Prelim. Resp. 10), 8 Patent Owner does not present arguments or evidence of secondary considerations in its Preliminary Response. Therefore, secondary considerations do not constitute part of our analysis herein. Petitioner has provided no assessment as to the level of ordinary skill to be considered in evaluating the grounds of obviousness that are advanced by Petitioner. The absence of such assessment calls into question the fundamental adequacy of Petitioner in carrying its burden to show a reasonable likelihood of success of unpatentability of the challenged claims that necessarily must take into account the level of ordinary skill in the art.” slip op. at 10

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

    “In any event, we do not discern that there is any apparent dispute between the parties as to the meaning of any claim term. In considering the record at hand, we determine that it is unnecessary to make explicit, or further address, any claim term in deciding whether or not to institute trial. See Nidec Motor Corp. v. Zhongshan Broad Ocean Motor Co., 868 F.3d 1013, 1017 (Fed. Cir. 2017) (holding that only claim terms in controversy need to be construed, and only to the extent necessary to resolve the 9 Throughout their briefings, the parties refer to the limitations designated [1.1] through [1.7] using the term “element,” e.g., “element [1.7]” (see, e.g., Pet. 23; Prelim. Resp. 23). For consistency with the parties’ chosen nomenclature, we do the same in this Decision. controversy (citing Vivid Techs., Inc. v. Am. Sci. & Eng’g, Inc., 200 F.3d 795, 803 (Fed. Cir. 1999))).” slip op. at 12

  • Obviousness (§103) › Motivation to combine / reasonable expectation of successMotivation not foundReasonable expectation not foundNot shown unpatentable

    “A POSITA would have been motivated to modify Summers’ fiber optic cable 50 to include Kaji’s intermittently-fixed optical fiber tape 2A to obtain the predictable result of enabling a higher density of optical fibers to be packed in Summers’ fiber optic cable 50, as contemplated by Kaji. *** a POSITA would have had a reasonable expectation of success because such modification would amount to nothing more than a simple substitution of Summers’ four-fiber ribbons 52 with Kaji’s intermittently-fixed optical fiber tape 2A by known methods of cable manufacturing. ***” slip op. at 20

  Claim construction§ 103 obviousnesscites Phillips · Graham
  Patents in suitUS 11,287,591
• Innoscience (Zhuhai) Technology Company, Ltd. / Innoscience America, Inc. v. Efficient Power Conversion CorporationAll claims unpatentable
  PTAB · Mar 25, 2025 · IPR2023-01384 · APJ Jeffrey W Abraham · IPR · Final written decision

  Claims 1–7 are unpatentable as obvious over Yoshida and Saxler; the Board did not reach the alternative grounds.

  RulingsFinal written decision

  • Skill levelOther

    “In light of the record before us, we determine that we do not need to reach a specific finding regarding the level of ordinary skill in the art. See Okajima v. Bourdeau, 261 F.3d 1350, 1355 (Fed. Cir. 2001) (explaining that specific findings regarding ordinary skill level are not required “where the prior art itself reflects an appropriate level and a need for testimony is not shown”) (quoting Litton Indus. Prods., Inc. v. Solid State Sys. Corp., 755 F.2d 158, 163 (Fed. Cir. 1985)).” slip op. at 13

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

    “In the Institution Decision, we declined to adopt Petitioner’s proposed construction of the “side surfaces” limitation and determined that it was not necessary to further construe this term because “[t]he parties do not dispute that the language ‘side surfaces extending horizontally’ encompasses a gate material with sloped side surfaces as depicted in Figure 5 of the ’335 patent.” Inst. Dec. 11–16 (citing Nidec Motor Corp. v. Zhongshan Broad Ocean Motor Co., 868 F.3d 1013, 1017 (Fed. Cir. 2017); 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.”)). We invited the parties to address this limitation further during the course of this trial, but neither party provided additional evidence or argument regarding the “side surfaces” limitation. Inst. Dec. 16; see generally PO Resp.; Reply; Sur-reply. Accordingly, we maintain our determination from the Institution Decision that we do not need to construe the “side surfaces” limitation. Inst. Dec. 15– 16.” slip op. at 14

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

    “This evidence, particularly the language in the ’335 patent itself, undermines Patent Owner’s argument that “[t]he process for forming gate ledges using separate masks instead of the self-aligned process disclosed in the ’335 patent cannot produce ledges that are ‘substantially symmetric.’” PO Resp. 39 (emphasis added); see also PO Resp. 42–43 (arguing that a gate structure with ledges having substantially equal widths is “not achievable” without using a single photo-mask process). We have considered the evidence presented by Patent Owner and Dr. Schubert in support of Patent Owner’s arguments. PO Resp. 38–43; Ex. 2005 ¶¶ 49–51. We, however, are unable to discern sufficient evidence supporting a conclusion that using separate masks cannot produce ledges that are substantially symmetric, particularly when the ’335 patent suggests otherwise. See Ex. 1001, 4:60– 63 (referring only to the “possibility of misalignment”). Even if, as Patent Owner and Dr. Schubert contend, misalignment “naturally” occurs when using a two-mask process, that does not foreclose the possibility that the” slip op. at 18

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

    “It is well settled that “[a] reference does not teach away . . . if it merely expresses a general preference for an alternative invention but does not ‘criticize, discredit or otherwise discourage’ investigation into the invention claimed.” DePuy Spine, Inc. v. Medtronic Sofamor Danek, Inc., 567 F.3d 1314, 1327 (Fed. Cir. 2009) (quoting In re Fulton, 391 F.3d 1195, 1201 (Fed. Cir. 2004)). Furthermore, “teaching that a composition may be optimal or standard does not criticize, discredit, or otherwise discourage” slip op. at 31

  Patent outcomesUS 10,312,335 unpatentable
  Claim construction§ 103 obviousnesscites Phillips · KSR · Graham
  Patents in suitUS 10,312,335
• Lululemon USA Inc. v. Nike, Inc.All claims unpatentable
  PTAB · Mar 21, 2025 · IPR2023-01460 · APJ Carl M Defranco · IPR · Final written decision

  Claims 1–19 are unpatentable as obvious over Dua, Hong, and Lockwood; the Board did not reach the additional grounds.

  RulingsFinal written decision

  • Skill levelSkill level petitioner adoptedDecided for petitioner

    “lululemon proposes, and Nike does not dispute, that one skilled in the art 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.” Pet. 12–13 (citing Ex. 1003 ¶¶ 43–45); see also PO Resp. 13 (“Nike applies lululemon’s proposed level of skill in the art.”). There being no dispute, we adopt lululemon’s definition of the level of skill in the art.” slip op. at 5

  • Claim Construction › Threshold & procedure › Whether a term needs construction (O2 Micro)Term construed petitioner constructionDecided for petitioner

    “lululemon asserts that “the plain and unambiguous language of the claim[s] requires that the flat-knitted element having the claimed features must be formed from a flat-knitting process.” Pet. 13–14. Nike agrees, and 1 US 3,641,603, issued Feb. 15, 1972 (Ex. 1003, “Lockwood”). 2 US 2005/0193592 A1, published Sep. 8, 2005 (Ex. 1004, “Dua”). 3 US 6,558,784 B1, issued May 6, 2003 (Ex. 1011, “Norton”). 4 H. Hong, The development of 3D shaped knitted fabrics for technical purposes on a flat knitting machine, INDIAN JOURNAL OF FIBRE & TEXTILE RESEARCH, VOL. 19, PGS. 189–194 (Sep. 1994) (Ex. 1005, “Hong”). 5 US 2006/0053658 A1, published Mar. 16, 2006 (Ex. 1006, “Voughlohn”). notes that our Institution Decision adopted that construction, i.e., “that the ‘domed, three dimensional structure’ of the ‘flat-knitted element,’ recited in claims 1, 10, and 11, is formed ‘during the flat-knitting process.’” PO Resp. 12 (quoting Inst. Dec. 6). Thus, the parties make clear that the claims do not encompass forming the claimed “three-dimensional structure” after the flatknitting process is complete. Thus, we maintain the construction in our Institution Decision that the claimed “central portion having a domed, threedimensional structure” must be formed during the flat-knitting process, and not afterward.” slip op. at 5

  • Expert testimonyPetitioner expert creditedDecided for petitioner

    “Nike and its expert mischaracterize Hong. After close review of the opinions of both parties’ experts, we credit the opinion of lululemon’s expert as more consistent with Hong’s disclosure than that of Nike’s expert. In particular, lululemon’s expert points to Hong’s unmistakable and explicit disclosure that “knitting directly the 3D shapes can overcome fabric waste and diminish the labour cost inherent to the use of two-dimensional fabrics.” Ex. 1002 ¶ 91 (quoting Ex. 1005, 5) (emphasis added). That disclosure by Hong of “knitting directly” the 3D shape clearly suggests it is formed as part of Hong’s flat-knitting process, and not as part of some post-knit seaming process. Hong’s additional disclosure of “diminish[ing] the labour cost inherent to the use of two-dimensional fabrics” also cuts against Nike’s notion of an additional step of “forming that two-dimensional pattern piece into a three-dimensional structure” following the flat knitting step. See PO Resp. 21–22.” slip op. at 9

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

    “d. Conclusion For all the above reasons, we find that the combination of Dua, Hong, and Lockwood teaches or suggests an article of footwear having “a domed, three-dimensional structure” that is formed during “a flat-knitting process” and “shaped to extend above the plane” of “flattened” side portions, as recited in claims 1 and 11. We also find that one skilled in the art would have a reasonable expectation of succeeding in forming an article of footwear having such a domed, three-dimensional structure as a result of combining the teachings of Dua, Hong, and Lockwood. And, because Nike does not otherwise contest that one skilled in the art would have had sufficient reason to combine the teachings of Dua, Hong, and Lockwood or that such combination discloses the remaining elements of claims 1 and 11, we need not further address those uncontested elements. See In re NuVasive, Inc., 841 F.3d 966, 974 (Fed. Cir. 2016) (“The Board, having found the only disputed limitations together in one reference, was not required to address undisputed matters.”). Thus, we conclude that lululemon demonstrates, by a preponderance of the evidence, that claims 1 and 11 are unpatentable as obvious over the combined teachings of Dua, Hong, and Lockwood.” slip op. at 20

  Patent outcomesUS 9,730,484 unpatentable
  Claim construction§ 103 obviousness
  Patents in suitUS 9,730,484
• Innoscience (Zhuhai) Technology Company, Ltd. / Innoscience America, Inc. v. Efficient Power Conversion CorporationNo claims unpatentable
  PTAB · Mar 18, 2025 · IPR2023-01383 · APJ Kimberly Mcgraw · IPR · Final written decision

  Claims 1–5 were not shown unpatentable because Petitioner did not sufficiently establish a reason to modify the asserted prior art.

  RulingsFinal written decision

  • Expert testimonyPatent owner expert creditedDecided for patent owner

    “We disagree with Petitioner’s argument because it fails to address Dr. Schubert’s academic and other experience with GaN transistors. Dr. Schubert is currently a tenured full professor in the Department of Electrical Computer, and Systems Engineering at Rensselaer Polytechnic Institute and was previously a tenured full professor in the Department of Electrical and Computer Engineering at Boston University. Ex. 2001, 129. Additionally, Dr. Schubert was the director of Boston University’s Semiconductor Devices Research Laboratory. Ex. 2001, 129. Dr. Schubert persuasively explains that his general expertise is in the field of electrical engineering and applied physics, including semiconductors, processing, and devices and his specific expertise is in the field of semiconductor materials (such as GaN), semiconductor devices, semiconductor integrated circuits, ohmic contacts, Schottky contacts, HEMTs, and optoelectronic devices such as light-emitting diodes (LEDs). Ex. 2001 ¶ 11, App’x A pp.129–137. His experience includes “the design, growth, fabrication, and testing of semiconductor devices as well as the employment of these devices in a variety of applications” and he is “familiar with both the design of such transistors [HEMTs] and the manufacturing processes used for FETs. Ex. 2001 ¶ 11, App’x A, pp. 129–137. He is an author or co-author of numerous text books and articles, and co-inventor of numerous patents, including those dealing with HEMT transistors and GaN devices. Ex. 2001 ¶ 13, App’x A, pp. 129–137. Petitioner fails to present any persuasive argument or evidence that Dr. Schubert’s extensive education and experience regarding GaN transistors is insufficient or lacking such that his testimony should be given little weight. Finally, we disagree with Petitioner’s additional argument that that its expert’s testimony (Dr. Shealy) should be given more weight than Patent Owner’s expert’s testimony (Dr. Schubert) because “[u]nlike Dr. Schubert, Dr. Shealy is one of the pioneer scientists in the field of GaN transistors.” Reply 34 (stating that Dr. Shealy’s research lab built the first GaN HEMT device on silicon in 1999 and citing Ex. 2002, 87:19–238). Obviousness is determined through the lens of a “person of ordinary skill in the art,” not through the lens of a person with extraordinary skill or a pioneer in the field. Given Dr. Schubert’s extensive relevant education and experience, Petitioner does not persuasively explain why Dr. Shealy’s testimony on any specific topic, or his testimony in general, should be given more weight than Dr. Schubert’s.” slip op. at 16

  • Skill levelSkill level petitioner adoptedDecided for petitioner

    “understanding of a person of ordinary skill in the art (sometimes abbreviated herein as “POSITA”). Graham, , 383 U.S. at 17–18. Petitioner argued that a person of ordinary skill in the art would have had a “at least a four-year degree in electrical engineering, chemical engineering, physics, or material science or a closely related field and at least two years of experience in semiconductor device design or fabrication, including the processing of semiconductor materials, analysis of device operation, or the development of new device topologies. Additional education could substitute for professional experience and vice versa.” Pet. 11 (citing Ex 1003 ¶ 69). Patent Owner did not dispute this proposed definition prior to institution. See generally Prelim. Resp. In our Decision on Institution, we adopted Petitioner’s proposal. After institution, Patent Owner asserted a slightly different definition of a POSITA, namely someone who “would have possessed at least a four-year degree in electrical engineering, physics, material science, or a closely related field, and three years of professional work experience in the epitaxial growth, design, and fabrication of semiconductor electronic devices, including those of GaN.” Resp. 17. Relevant graduate education could substitute for the professional work experience. Id. Upon review of the full record, we see no reason to modify, and we thus maintain, the definition of a POSITA applied in our Decision on Institution. We also determine that our decision would be the same under either of the parties’ proposed definitions.” slip op. at 14

  • Claim Construction › Threshold & procedure › Whether a term needs construction (O2 Micro)Not reached

    “During the proceeding, the parties also dispute the proper construction of “etching away the doped GaN layer, except a portion of the doped GaN layer beneath the gate contact” as recited in step [1e4] and provided briefing on this issue. Papers 35, 36, 37, 38. Because, as explained below, our determination rests upon Petitioner’s failure to show a sufficient reason to modify the asserted art, which is not dependent upon any particular claim construction, we need not, and do not, address these claim construction issues. See Nidec Motor Corp. v. Zhongshan Broad Ocean Motor Co., 868 F.3d 1013, 1017 (Fed. Cir. 2017) (citing Vivid Techs., Inc. v. Am. Sci. & Eng’g, Inc., 200 F.3d 795, 803 (Fed. Cir. 1999)) (holding that only claim terms in controversy need to be construed, and only to the extent necessary to resolve the controversy).” slip op. at 13

  • ExcludeDenied

    “III. PETITIONER’S MOTION TO EXCLUDE EXHIBIT 2008 Petitioner filed a Motion to Exclude (Paper 25, “Mot.”) Exhibit 2008, which is a hearing transcript from the parallel ITC investigation. Mot. 1. Because we do not rely upon Exhibit 2008 in our Decision, we dismiss Petitioner’s motion as moot.” slip op. at 47

  Patent outcomesUS 8,404,508 not shown unpatentable
  Claim construction§ 103 obviousnesscites Phillips · KSR
  Patents in suitUS 8,404,508
• Innoscience (Zhuhai) Technology Company, Ltd / Innoscience America, Inc. v. Efficient Power Conversion CorporationAll claims unpatentable
  PTAB · Mar 18, 2025 · IPR2023-01381 · APJ Jon B Tornquist · IPR · Final written decision

  Claims 1–3 and 7–9 are unpatentable as obvious over Uemoto and Smith; the motion to amend is granted, and proposed substitute claims 13 and 14 are not shown unpatentable.

  RulingsFinal written decision

  • Skill levelSkill level petitioner adoptedDecided for petitioner

    “In order to determine whether an invention would have been obvious at the time the application was filed, we consider the level of ordinary skill in the pertinent art. Graham, 383 U.S. at 17. In assessing 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) (quotation omitted). Petitioner contends a person of ordinary skill in the art “would have possessed at least a four-year degree in electrical engineering, chemical engineering, physics, or material science, or a closely related field, and at least two years of experience in semiconductor device design or fabrication, including the processing of semiconductor materials, analysis of device operation, or the development of new device topologies.” Pet. 5–6. Petitioner contends “[a]dditional education could substitute for professional experience and vice versa.” Id. at 6. Patent Owner contends that a person of ordinary skill in the art would have had “at least a four-year degree in electrical engineering, physics, material science, or a closely related field, and three years of professional work experience in the epitaxial growth, design, and fabrication of semiconductor electronic devices, including those of GaN.” PO Resp. 7 (citing Ex. 2009 ¶ 82). Upon review of the evidence of record and the parties’ arguments, we adopt Petitioner’s definition of the person of ordinary skill in the art as it is consistent with the prior art of record. See Okajima v. Bourdeau, 261 F.3d 1350, 1355 (Fed. Cir. 2001) (holding that the prior art itself can reflect the appropriate level of ordinary skill in the art). We note, however, that the conclusions reached in this Decision would be the same under either proposed definition of the ordinarily skilled artisan. See Ex. 2009 ¶ 83 (Dr. Schubert testifying that his opinions would be the same under either proposed definition); Ex. 1033 ¶ 9 (Dr. Shealy testifying that the differences in proposed definitions of the ordinarily skilled artisan “would not change the outcome of the invalidity analysis in any material manner”); PO Resp. 7; Pet. Reply 1.” slip op. at 9

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

    “compensated GaN layer above the barrier layer, and a gate contact above the compensated GaN layer.” Ex. 1001, 5:12–18. Petitioner contends the term “compensated” indicates that the step of compensating the GaN layer has already occurred, such that the term “compensated GaN layer” should be construed as a “‘[d]oped GaN layer formed with a step to passivate its impurities’ which is a ‘product-by-process’ limitation.”5 Pet. 12–14. And, because compensation with hydrogen was the “critical step” distinguishing the claims from the prior art, and because hydrogenation in as-grown III-nitride materials had been well known for over a decade by 2009, Petitioner contends “compensated” “cannot be interpreted as mere hydrogen presence in as-grown material, a well-known property of doped GaN.” Id. at 15. Patent Owner contends “compensated GaN material” should be construed as “a semiconductor GaN gate material in which one type of impurity (for example, donor) cancels the electrical effects of the other type of impurity (for example, acceptor).” PO Resp. 11 (citing Ex. 2009 ¶ 92) (emphasis added). Patent Owner contends this construction is consistent with the IEEE dictionary, which defines “compensated semiconductor” as 5 Given that product-by-process steps in a device claim are not entitled to patentable weight, Petitioner contends “the prior art only need show a material with passivated impurities to show unpatentability, not the step to achieve it.” Pet. 15–16. “[a] semiconductor in which one type of impurity or imperfection (for example, donor) partially cancels the electric effects of the other type of impurity or imperfection (for example, acceptor).” PO Resp. 14 (quoting Ex. 2004). Patent Owner contends its construction is also consistent with the written description of the ’294 patent, which explains that a compensated GaN material is part of the gate and includes a p-type impurity that imparts an electrical effect (i.e., conductivity), as well as a second impurity, e.g., hydrogen, that partially cancels the electrical effect of the p-type impurity, rendering the layer semi-insulating. Id. at 14–15 (citing Ex. 1001, 3:10–13, 3:43–45). On this record, we construe “compensated GaN layer” as “a GaN layer in which one type of impurity (for example, donor) partially cancels the electric effects of the other type of impurity (for example, acceptor).” This is consistent with the disclosures of the ’294 patent, the IEEE dictionary definition, and the construction ultimately adopted by the ITC. Ex. 2004, 3; Ex. 1049, 16–17 (ITC construing “compensated GaN layer” to mean “a GaN layer in which one type of impurity partially cancels the electrical effects of another type of impurity”); Ex. 1001, 3:43–45 (explaining that the compensated GaN layer of the ’294 patent is formed through the “passivation of a p-type impurity using hydrogen”). For the reasons set forth below, however, we decline to construe “compensated GaN layer” as a product-by-process claim term (as asserted by Petitioner), or to limit the compensated GaN layer to a gate material (as asserted by Patent Owner).” slip op. at 11

  • Claim Construction › Intrinsic evidence (Phillips canons) › Specification disavowal / 'present invention' languageDisclaimer not foundDecided for petitioner

    “There are two exceptions to the general rule that we apply the ordinary and customary meaning of a claim term: (1) when a patentee sets out a definition and acts as his own lexicographer, or (2) when the patentee disavows the full scope of a claim term either in the specification or during prosecution. See Thorner, 669 F.3d at 1365. The standards for lexicography and disclaimer, however, are “exacting.” Id. at 1366. There is no argument that the patentees acted as their own lexicographer to redefine the term “compensated GaN layer.” With respect to disavowal, a “patentee may demonstrate intent to deviate from the ordinary and accustomed meaning of a claim term by including in the specification expressions of manifest exclusion or restriction, representing a clear disavowal of claim scope.” Thorner, 669 F.3d at 1366 (quoting Teleflex, Inc. v. Ficosa N. Am. Corp., 299 F.3d 1313, 1325 (Fed. Cir. 2002)). As noted by Patent Owner, the title of the ’294 patent is, in part, “Compensated Gate MISFET” and much of the discussion of the ’294 patent is of a compensated GaN layer that is directly below the gate contact and above a barrier layer and operates in conjunction with the gate contact to control the on/off state of the transistor. PO Resp. 12–14. We are presented with insufficient argument or evidence to conclude, however, that these disclosures rise to the level of a disclaimer. For example, although the title of the ’294 patent is directed to a “Compensated Gate MISFET,” claim 1 is more broadly directed to “[a] column III Nitride transistor.” Ex. 1001, 5:12, code (54). Nor are we directed to an expression or statement of manifest exclusion in the ’294 patent that would serve to disclaim any “compensated GaN layer” that is not directly below the gate and/or that does not function in concert with the gate electrode to control the on/off state of the transistor. See Thorner, 669 F.3d at 1366. With respect to the stated goals of the invention, as noted by Patent Owner, one of the primary purposes of the compensated GaN layer of the ’294 patent is to reduce gate leakage and gate capacitance. Ex. 1001, 2:13– 19, 3:18–21 (“[U]sing a compensated semiconductor layer 38 leads to low gate leakage during device operation.”). We cannot use the goals of the invention, however, to rewrite the claims or insert terms that are not present. See Thorner, 669 F.3d at 1366. Moreover, the prior art of record indicates that a compensated GaN layer that is below the gate contact and above a barrier layer, but not part of the active gate structure, may also “decrease the leakage current between the gate and the drain.” Ex. 1006 ¶¶ 44 (“Even when a positive bias of 5 V or higher is applied to the gate electrode, no significant gate-leakage current is observed.”), 61. As such, evidence of record suggests that a person of ordinary skill in the art would have understood that one of the primary goals disclosed in the ’294 patent is achieved regardless of whether the compensated GaN layer is part of the gate, or simply in close vicinity to the gate. In view of the foregoing, we are not persuaded that the written description of the ’294 patent indicates that the “compensated GaN layer” must be part of the gate structure.” slip op. at 17

  • Obviousness (§103) › Objective indicia / secondary considerations › NexusObjective indicia no nexusDecided for petitioner

    “To be probative, Patent Owner must prove there is a nexus between the presented evidence and the merits of the claimed invention. See Demaco Corp. v. F. Von Langsdorff Licensing Ltd., 851 F.2d 1387, 1392 (Fed. Cir. 1988). A rebuttable presumption of nexus applies when the “patentee shows that the asserted evidence is tied to a specific product and that the product ‘is the invention disclosed and claimed.’” Fox Factory, Inc. v. SRAM, LLC, 944 F.3d 1366, 1373 (Fed. Cir. 2019) (quoting Demaco, 851 F.2d at 1392). “That is, presuming nexus is appropriate ‘when the patentee shows that the asserted objective evidence is tied to a specific product and that product embodies the claimed features, and is coextensive with them.’” Id. (quoting Polaris Indus., Inc. v. Arctic Cat, Inc., 882 F.3d 1056, 1072 (Fed. Cir. 2018)). If the praise is not limited to the features of the claimed invention, the patent owner may still prove nexus “by showing that the evidence of secondary considerations is the ‘direct result of the unique characteristics of the claimed invention.’” Id. at 1373–74 (quoting In re Huang, 100 F.3d 135, 140 (Fed. Cir. 1996)). Patent Owner contends that the compensated gate of the ’294 patent “was a breakthrough invention and resulted in the first commercially viable enhancement-mode GaN transistor.” PO Resp. 60 (citing Ex. 2009 ¶¶ 192– 193, 197; Ex. 2021). Patent Owner further contends that this achievement required the counter-intuitive use of a compensated gate material in the gate structure, and represented “a technological leap that laid the foundation for viable enhancement-mode GaN transistors.” Id. at 61–62. For this achievement, Patent Owner contends the inventor, Dr. Alex Lidow, received the 2015 SEMI Award. Id. at 60 (citing Ex. 2021). Upon review of Patent Owner’s evidence and the parties’ arguments, we find that Patent Owner’s objective indicia evidence is entitled to little, if any, weight. The evidence of praise relied upon by Patent Owner is not clearly linked to the claimed invention or any particular product having each of the claimed features of the ’294 patent. Ex. 2021. For example, the 2015 SEMI award was provided to Dr. Lidow “for commercialization of GaN power devices.” Id. An article explaining the award indicates that “high cost” previously “limited [the] commercial success” of GaN technologies, but Dr. Lidow was able to overcome these issues, “from resolving packaging limitations to establishing a low-cost supply chain,” “through persistence.” Id. This praise is not demonstrably linked to the claimed invention or any particular device, and does not mention the use of a compensated gate, or any other relevant feature recited in the claims. In view of the foregoing, we determine that Patent Owner’s objective evidence of non-obviousness is entitled to little, if any, weight.” slip op. at 20

  Patent outcomesUS 8,350,294 unpatentable
  Claim construction§ 103 obviousness§ 112 disclosurecites KSR · Graham
  Patents in suitUS 8,350,294

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.