• Fluidmaster, Inc. v. Danco, Inc.Some claims unpatentable
  PTAB · Mar 5, 2026 · IPR2024-00634 · APJ Meredith C Petravick · IPR · Final written decision

  Claims 1, 3, 8–13, 15, 16, and 19–24 are unpatentable over Brown and Ho, with claims 16 and 19 also relying on the Quick Connection Art; the remaining challenged claims were not shown unpatentable.

  RulingsFinal written decision

  • Skill levelSkill level patent owner adoptedDecided for patent owner

    “Patent Owner proposes that: A [person of ordinary skill in the art (“POSITA”)] in the field to which the ’105 Patent is directed would have had at least a Bachelor of Science degree in mechanical engineering or a related field or, as a substitute, at least two years of work or” slip op. at 9

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

    “of “integrally molded with” as “molded together as a single structure.” Paper 21, 15.” slip op. at 11

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

    “Patent Owner responds that: a POSITA would not have been motivated to make the proposed modification, nor does the Petition include any analysis regarding why a POSITA would be motivated to move from a vertical extended portion to a radial extended portion. Indeed, a radial extended portion is directly counter to the stated goals of Brown (e.g., reducing noise caused by turbulence), at least insofar as it introduces another sudden directional change into the fluid flow system. PO Resp. 58–59 (citing Ex. 2013 ¶ 242).” slip op. at 32

  • Disclosure Requirements (§112) › Written description (Ariad)Written description adequateEntitled to earlier dateDecided for patent owner

    “Patent Owner argues that the ’105 patent claims were “fully supported as of the filing date of at least the ’606 Application . . . March 11, 2004” because the ’606 Application discloses regulating water flow and a POSITA would know that appropriate devices for regulating water flow includes nonadjustable waterflow restrictors. PO Resp. 63–65; PO Sur-reply 26–29. Patent Owner’s argument is persuasive. The ’606 Application discloses: [W]hen the toilet fill valve 100 is open and water flows from the water inlet 103 to the water outlets 106 and into a toilet tank, an amount of water is also supplied to the bowl fill valve inlet 113 that flows through the bowl fill valve 109 and out the bowl fill valve outlet 116. By virtue of the manual setting of handle 119 of the bowl fill valve 109, the flow of water through the bowl fill valve 109 is regulated. In this manner, the flow of water is regulated so that enough water flows out of the bowl fill valve 109 to fill a toilet bowl without wasting any water down a drain. seen from the passage above, the ’606 Application discloses regulating an amount of water supplied to a toilet bowl using a valve (i.e., a water flow regulator). Ex. 2013 ¶ 288. Further, the ’606 Application states: The bowl fill valve 109 may be, for example, a ball valve, a gate valve, a globe valve, a plug valve, a diaphragm valve, a butterfly valve, a needle valve, a sliding gate, a quick turn valve, a knife valve or any other appropriate type of valve as can be appreciated by those with ordinary skill in the art.” slip op. at 42

  Patent outcomesUS 9,103,105 mixed
  Claim construction§ 102 anticipation§ 103 obviousness§ 112 disclosurecites Phillips · KSR · Graham
  Patents in suitUS 9,103,105
• Mobileye Global, Inc. / ZF Active Safety And Electronics US LLC v. Facet Technology Corp.Some claims unpatentable
  PTAB · Jan 23, 2026 · IPR2025-00749 · APJ Sean P O’Hanlon · IPR · Final written decision

  Claims 1–4 and 8–13 are unpatentable as obvious over Gallagher and Schofield; claims 5–7 and 14–16 were not shown unpatentable on the asserted combinations.

  RulingsFinal written decision

  • Skill levelSkill level petitioner adoptedDecided for petitioner

    “skilled artisan would have, with Petitioner contending four years and Patent Owner contending two years. Patent Owner’s witness, Dr. Papanikolopoulos, does not provide an explanation for his opinion or support his definition of the level of ordinary skill with citations to evidence. See Ex. 2023 ¶ 57 (“In my opinion, [Petitioner’s definition] is an excessive level of ordinary skill in the art, and I believe instead [an ordinarily skilled artisan] would more likely have two years of experience rather than four years.”). On the other hand, Petitioner’s witness, Dr. Thorpe, does provide an explanation for his opinion, explaining that his assertion that four years of experience is required is based on the state of the art, typical undergraduate curricula, and his supervision of doctoral students. Ex. 1030 ¶ 21. Based on the arguments presented and the cited references, we find Petitioner’s definition of the level of ordinary skill reasonable and for purposes of this Decision, adopt it as our own. We note that we would reach the same conclusions under either proposed standard.” slip op. at 11

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

    “As a general rule, unless the steps of a method claim actually recite an order, the steps are not ordinarily construed to require one.” Mformation Techs., Inc. v. Rsch. in Motion Ltd., 764 F.3d 1392, 1398 (Fed. Cir. 2014) (citation modified). “However, a claim requires an ordering of steps when the claim language, as a matter of logic or grammar, requires that the steps be performed in the order written, or the specification directly or implicitly requires an order of steps.” Id. (cleaned up). “[O]rdinarily in process claims steps taken concurrently are the equivalent of steps taken successively.” In re White, 39 F.2d 974, 975 (CCPA 1930); see also Cybersettle, 243 F. App’x. at 609 (finding “the step of calculating the differences between demands and offers can occur concurrently with the [next enumerated step of] receipt of multiple demands and offers” and “the testing step of ‘determining whether any of the differences fall within the predetermined settlement range’ may occur concurrently with the receipt and comparison of the bids” (citation modified)). This is especially true here, given that the recitations at issue are functional language in an apparatus (system) claim. We further agree with Petitioner that the ’328 patent discloses such concurrent performance of these steps: Either concurrent with or subsequent to the identification of road signs 30 and generation of asset management database 24, the computer processor 22 evaluates that portion 32 of each video frame or image that depicts a road sign 30 to determine a set of color values 40, 42 for each of a plurality of colors on the road sign 32. A retroreflectivity value is generated for each color portion 34, 36 on each frame of the tagged videostream 20 containing the road sign 30 that represents a different color value 40, 42. slip op. at 13

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

    “Petitioner is correct to the extent that it need not show that “the features of [Schofield] may be bodily incorporated into the structure of [Gallagher],” but Petitioner must prove that “a skilled artisan would have been motivated to combine the teachings of the prior art references to achieve the claimed invention.” Allied Erecting, 825 F.3d at 1381. For claim 9, Petitioner proposes to modify Gallagher’s system to use “Schofield’s determination of a light source’s location within a field of view” in Gallagher’s system. Pet. 23. Thus, Petitioner’s combination does not require the combination of Gallagher’s and Schofield’s sensors into a single system, and Patent Owner’s “sensor fusion” argument is inapposite. See Tr. 48:8–49:6 (Patent Owner’s counsel confirming that the problem of “sensor fusion” stems from combining disparate sensors in a single system). As noted above, Schofield teaches considering the relative location of the light source in determining whether the light source is from headlights or taillights (that is, an object of interest). See Ex. 1006, 9:26–35. We are persuaded that an ordinarily skilled artisan would be motivated to use this teaching in Gallagher’s device to help distinguish between road markers that are arranged side-by-side and have a reasonable expectation of success in doing so. See Ex. 1005 ¶ 40; Ex. 1003 ¶¶ 77 (“[An ordinarily skilled artisan] would have seen Schofield’s determination of a light source’s location within the field of view as advantageous because it would have allowed Gallagher’s computer to associate the measured reflectance level with the appropriate road marker.”), 79 (“[I]mplementing this determination would have required [an ordinarily skilled artisan] to implement only conventional techniques of image processing (identifying a location of a particular pixel within an array), which was well known by [an ordinarily skilled artisan], to predictably yield the result of the location within a field of view indicating an intensity value associated with a road marker. Given that Schofield and Gallagher disclose similar types of arrays, this combination would have merely required the use of Schofield’s known technique to improve Gallagher’s similar device in the same way.”).” slip op. at 30

  • Obviousness (§103) › Analogous artNon analogous artNot shown unpatentable

    “A reference qualifies as prior art for a determination under § 103 when it is analogous to the claimed invention. In re Clay, 966 F.2d 656, 658 (Fed. Cir. 1992). Two separate tests define the scope of analogous prior art: (1) whether the art is from the same field of endeavor, regardless of the problem addressed, and (2) if the reference is not within the field of the inventor’s endeavor, whether the reference still is reasonably pertinent to the particular problem with which the inventor is involved. In re Bigio, 381 F.3d 1320, 1325 (Fed. Cir. 2004) (citing In re Deminski, 796 F.2d 436, 442 (Fed. Cir. 1986)).” slip op. at 49

  Patent outcomesUS 9,671,328 mixed
  Claim construction§ 103 obviousnesscites KSR · Graham
  Patents in suitUS 9,671,328
• Mobileye Global, Inc. / ZF Active Safety And Electronics US LLC v. Facet Technology Corp.Some claims unpatentable
  PTAB · Jan 23, 2026 · IPR2024-01111 · APJ Sean P O’Hanlon · IPR · Final written decision

  Claims 1–4 and 8–13 are unpatentable as obvious over Gallagher and Schofield; claims 5–7 and 14–16 were not shown unpatentable on the asserted grounds.

  RulingsFinal written decision

  • Skill levelSkill level petitioner adoptedDecided for petitioner

    “The parties disagree only on the length of experience an ordinarily skilled artisan would have, with Petitioner contending four years and Patent Owner contending two years. Patent Owner’s witness, Dr. Papanikolopoulos, does not provide an explanation for his opinion or support his definition of the level of ordinary skill with citations to evidence. See Ex. 2023 ¶ 57 (“In my opinion, [Petitioner’s definition] is an excessive level of ordinary skill in the art, and I believe instead [an ordinarily skilled artisan] would more likely have two years of experience rather than four years.”). On the other hand, Petitioner’s witness, Dr. Thorpe, does provide an explanation for his opinion, explaining that his assertion that four years of experience is required is based on the state of the art, typical undergraduate curricula, and his supervision of doctoral students. Ex. 1030 ¶ 21. Based on the arguments presented and the cited references, we find Petitioner’s definition of the level of ordinary skill reasonable and for purposes of this Decision, adopt it as our own. We note that we would reach the same conclusions under either proposed standard.” slip op. at 11

  • Claim Construction › Intrinsic evidence (Phillips canons) › Plain and ordinary meaning to a POSITANo construction needed

    “As a general rule, unless the steps of a method claim actually recite an order, the steps are not ordinarily construed to require one.” Mformation Techs., Inc. v. Rsch. in Motion Ltd., 764 F.3d 1392, 1398 (Fed. Cir. 2014) (citation modified). “However, a claim requires an ordering of steps when the claim language, as a matter of logic or grammar, requires that the steps be performed in the order written, or the specification directly or implicitly requires an order of steps.” Id. (cleaned up). “[O]rdinarily in process claims steps taken concurrently are the equivalent of steps taken successively.” In re White, 39 F.2d 974, 975 (CCPA 1930); see also Cybersettle, 243 F. App’x. at 609 (finding “the step of calculating the differences between demands and offers can occur concurrently with the [next enumerated step of] receipt of multiple demands and offers” and “the testing step of ‘determining whether any of the differences fall within the predetermined settlement range’ may occur concurrently with the receipt and comparison of the bids” (citation modified)). This is especially true here, given that the recitations at issue are functional language in an apparatus (system) claim. We further agree with Petitioner that the ’328 patent discloses such concurrent performance of these steps: Either concurrent with or subsequent to the identification of road signs 30 and generation of asset management database 24, the computer processor 22 evaluates that portion 32 of each video frame or image that depicts a road sign 30 to determine a set of color values 40, 42 for each of a plurality of colors on the road sign 32. A retroreflectivity value is generated for each color portion 34, 36 on each frame of the tagged videostream 20 containing the road sign 30 that represents a different color value 40, 42. Ex. 1001, 5:52–60. Thus, the ’328 patent discloses concurrently detecting objects of interest (road signs) and determining whether the object of interest has a particular color value. slip op. at 13

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

    “Petitioner is correct to the extent that it need not show that “the features of [Schofield] may be bodily incorporated into the structure of [Gallagher],” but Petitioner must prove that “a skilled artisan would have been motivated to combine the teachings of the prior art references to achieve the claimed invention.” Allied Erecting, 825 F.3d at 1381. For claim 9, Petitioner proposes to modify Gallagher’s system to use “Schofield’s determination of a light source’s location within a field of view” in Gallagher’s system. Pet. 23. Thus, Petitioner’s combination does not require the combination of Gallagher’s and Schofield’s sensors into a single system, and Patent Owner’s “sensor fusion” argument is inapposite. See Tr. 48:8–49:6 (Patent Owner’s counsel confirming that the problem of “sensor fusion” stems from combining disparate sensors in a single system). As noted above, Schofield teaches considering the relative location of the light source in determining whether the light source is from headlights or taillights (that is, an object of interest). See Ex. 1006, 9:26–35. We are persuaded that an ordinarily skilled artisan would be motivated to use this teaching in Gallagher’s device to help distinguish between road markers that are arranged side-by-side and have a reasonable expectation of success in doing so. See Ex. 1005 ¶ 40; Ex. 1003 ¶¶ 77 (“[An ordinarily skilled artisan] would have seen Schofield’s determination of a light source’s location within the field of view as advantageous because it would have allowed Gallagher’s computer to associate the measured reflectance level with the appropriate road marker.”), 79 (“[I]mplementing this determination would have required [an ordinarily skilled artisan] to implement only conventional techniques of image processing (identifying a location of a particular pixel within an array), which was well known by [an ordinarily skilled artisan], to predictably yield the result of the location within a field of view indicating an intensity value associated with a road marker. Given that Schofield and Gallagher disclose similar types of arrays, this combination would have merely required the use of Schofield’s known technique to improve Gallagher’s similar device in the same way.”).” slip op. at 30

  • Expert testimonyPatent owner expert discountedOther

    “The parties disagree only on the length of experience an ordinarily skilled artisan would have, with Petitioner contending four years and Patent Owner contending two years. Patent Owner’s witness, Dr. Papanikolopoulos, does not provide an explanation for his opinion or support his definition of the level of ordinary skill with citations to evidence. See Ex. 2023 ¶ 57 (“In my opinion, [Petitioner’s definition] is an excessive level of ordinary skill in the art, and I believe instead [an ordinarily skilled artisan] would more likely have two years of experience rather than four years.”). On the other hand, Petitioner’s witness, Dr. Thorpe, does provide an explanation for his opinion, explaining that his assertion that four years of experience is required is based on the state of the art, typical undergraduate curricula, and his supervision of doctoral students. Ex. 1030 ¶ 21. Based on the arguments presented and the cited references, we find Petitioner’s definition of the level of ordinary skill reasonable and for purposes of this Decision, adopt it as our own. We note that we would reach the same conclusions under either proposed standard.” slip op. at 11

  Patent outcomesUS 9,671,328 mixed
  Claim construction§ 103 obviousnesscites KSR · Graham
  Patents in suitUS 9,671,328
• Fluidmaster, Inc. v. Danco, Inc.Some claims unpatentable
  PTAB · Dec 15, 2025 · IPR2024-00633 · APJ Meredith C Petravick · IPR · Final written decision

  Claims 1, 7–15, 19, and 20 are unpatentable over Brown and Ho; claims 2–6 and 16–18 were not shown unpatentable on the asserted grounds.

  RulingsFinal written decision

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

    “Brown’s adapter tube 23 (i.e., the extended portion) does not extend radially from a longitudinal axis of valve assembly 13 (i.e., the toilet fill valve). Ex. 1021, Fig. 1. Mr. Jobin testifies that a POSITA would not be motivated to move adapter tube 23 from a vertical position to a radial position because “a radial extended portion is directly counter to the stated goals of Brown (e.g., reducing noise caused by turbulence), at least insofar system.” Ex. 2013 ¶ 251; see Ex. 1021, 1:9–62. Patent Owner’s argument is persuasive. Petitioner’s analysis and Dr. Cameron’s testimony is conclusory and does not sufficiently explain why a POSITA would be motivated to make the proposed modification to Brown. For example, Petitioner does not sufficiently explain how such a modification would result in a more compact toilet fill valve system that could be adapted to fit in more toilet tank designs. Further, neither Petitioner nor Dr. Cameron sufficiently address Mr. Jobin’s testimony regarding Brown’s desire for a quieter toilet. See Pet. Reply 23; Ex. 1036 ¶ 84. Petitioner fails to meet its burden to show by a preponderance of the evidence that claim 2 is unpatentable over Brown and Ho.” slip op. at 35

  • Disclosure Requirements (§112) › Written description (Ariad)Written description adequateEntitled to earlier dateDecided for patent owner

    “description is an objective inquiry into the four corners of the specification from the perspective of a POSA. Using this test, the invention must be described in a manner sufficient to demonstrate that the inventor actually invented the claimed invention. Ariad Pharm., Inc. v. Eli Lilly & Co., 598 F.3d 1336, 1351 (Fed. Cir. 2010). “One shows that one is ‘in possession’ of the invention by describing the invention, with all its claimed limitations, not that which makes it obvious.” Lockwood v. Am. Airlines, Inc., 107 F.3d 1565, 1572 (Fed. Cir. 1997). Written description is a question of fact judged as of the relevant filing date. Falko–Gunter Falkner v. Inglis, 448 F.3d 1357, 1363 (Fed. Cir. 2006). An ipsis verbis disclosure, however, is not necessary to satisfy the written description requirement. Vas–Cath Inc. v. Mahurkar, 935 F.2d 1555, 1563 (Fed. Cir. 1991). The disclosure need only reasonably convey to a POSA that the inventor had possession of the subject matter in question, even if every nuance of the claims is not explicitly described in the specification. Id.; see Ariad, 598 F.3d at 1351. Patent Owner argues that the ’993 patent claims were “fully supported as of the filing date of at least the ’606 Application . . . March 11, 2004” because the ’606 Application discloses regulating water flow and a POSITA would know that appropriate devices for regulating water flow includes nonadjustable waterflow restrictors. PO Resp. 68; PO Sur-reply 28–30. Patent Owner’s argument is persuasive. The ’606 Application discloses: [W]hen the toilet fill valve 100 is open and water flows from the water inlet 103 to the water outlets 106 and into a toilet tank, an amount of water is also supplied to the bowl fill valve inlet 113 that flows through the bowl fill valve 109 and out the bowl fill valve outlet 116. By virtue of the manual setting of handle 119 valve 109 is regulated. In this manner, the flow of water is regulated so that enough water flows out of the bowl fill valve 109 to fill a toilet bowl without wasting any water down a drain. Ex. 1012, 47, ¶ 8 (emphasis added); see also Ex. 1001, 2:28–39. As can be seen from the passage above, the ’606 Application discloses regulating an amount of water supplied to a toilet bowl using a valve (i.e., a water flow regulator). Ex. 2013 ¶ 288.” slip op. at 48

  • Novelty / Anticipation (§102) › Prior-art status of a reference › Patents / published applications (effective date, provisional support)Reference not prior artNot shown unpatentable

    “1. Analysis of Claims 1–18 Schuster is available as prior art if the ’993 patent is only entitled to its January 27, 2014, filing date and not entitled to claim priority to earlier filing dates of the parent applications. On its face, the ’993 patent claims priority to a number of earlier parent applications, including Application No. 12/786,904 (the ’904 Application) filed May 25, 2010, and the Application code 63. Petitioner contends that the ’993 patent is not entitled to claim priority to the filing date of the earlier parent applications, and, thus, Schuster, a parent application of the ’993 patent, is available as prior art.15 Pet. 91–92. Petitioner alleges that the earlier parent applications, specifically Application No. 12/786,904 (the ’904 Application), do not provide written description support for the ’993 patent’s claim term “water flow regulator.” According to Petitioner, “water flow regulator” encompasses both adjustable devices for restricting the flow of water (i.e., valves) and fixed devices for restricting the flow of water (i.e., restrictors). Pet. 15. Petitioner contends that the ’904 Application does not provide support for water flow restrictors and, thus, does not provide support for the broader claim term water flow regulators. Id. at 14–15, 91–92. Petitioner argues that only adjustable water flow devices (i.e., valves) are supported by the ’904 Application. Id. Petitioner, thus, asserts that earliest effective filing date of the ’993 patent’s claims is the filing date of its application, January 27, 2014. Id. at 92. To be entitled to claim the benefit of an earlier filing date under 35 U.S.C. § 120 each application in the priority chain must comply with the written description requirement of 35 U.S.C. § 112(a). See Hollmer v. 14 The parties do not dispute that the ’993 patent and the earlier parent applications, including the ’904 Application and the ’606 Application, have the same pertinent portions of their specifications. See PO Resp. 71, n.16; Ex. 1004 ¶ 324. 15 Schuster issued on January 31, 2012, from Application No. 12/786,904, filed on May 25, 2010. Ex. 1029, code (21), (22), (45). Schuster, thus, issued more than one year prior to January 27, 2014.” slip op. at 46

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

    “2. Analysis of Claims 19 and 20 Claim 19 depends from claim 14 and additionally recites, “wherein the waterflow regulator comprises an adjustable water flow regulator that is configured to adjust the flow rate of the second portion of the water based at least in part on a setting of the adjustable water flow regulator.” Ex. 1001, 12:16–20. Claim 20 depends from claim 14 and recites the same additional limitation. Id. at 12:21–24. Claims 19 and 20, thus, require the water flow regulator to be an adjustable water flow regulator. Petitioner indicates that the earlier parent applications provide written description support for an adjustable water flow regulator. Pet. 91 (“[T]he ’904 application specification makes it clear that the adjustability of the bowl fill valve is a desirable and essential feature of the invention”); PO Surreply 28. Accordingly, Petitioner fails to meet its burden to show, by a preponderance of the evidence, that claims 19 and 20 are unpatentable over Schuster.” slip op. at 50

  Patent outcomesUS 9,139,993 mixed
  § 102 anticipation§ 103 obviousness§ 112 disclosurecites Phillips · KSR · Graham
  Patents in suitUS 9,139,993
• Boe Technology Group Co., Ltd. v. 138 East LCD Advancements LimitedSome claims unpatentable
  PTAB · Dec 1, 2025 · IPR2024-00973 · APJ George R Hoskins · IPR · Final written decision

  Claims 1, 3–7, 9–13, and 15–18 are unpatentable as obvious over Reiner and over Reiner with Takahara; claims 2, 8, and 14 were not shown unpatentable.

  RulingsFinal written decision

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

    “patentability based solely on arguments considered above in the context of claim 4. See, e.g., PO Resp. 42–43, 47–52. Therefore, Patent Owner has waived any other argument. See Inst. Dec. 44; Paper 10, 10. We adopt Petitioner’s arguments concerning these claims having been obvious over Reiner as our own in this Decision. See Pet. 40–44, 50–56, 57–70, 71; Ex. 1003 ¶¶ 134–142, 154–168, 174–221, 227. Accordingly, we conclude a preponderance of the evidence establishes these claims are unpatentable as having been obvious over Reiner.” slip op. at 83

  • Expert testimonyOther
  • Skill levelOther

  Patent outcomesUS 9,184,157 mixed
  § 103 obviousnesscites KSR · Graham
  Patents in suitUS 9,184,157
• Luminex International Co., Ltd. / Menard, Inc. v. Signify Holdings B.V.Some claims unpatentable
  PTAB · Aug 13, 2025 · IPR2024-01469 · APJ Steven M Amundson · IPR · Final written decision

  Claims 1–7, 9–15, and 18–20 are unpatentable; claims 8, 16, and 17 are not determined unpatentable under the asserted prior-art grounds.

  RulingsFinal written decision

  • PTAB / AIA Trials › §315(b) time barNot time barredDecided for petitioner

    “G. Analysis 1. REAL PARTY IN INTEREST Based on the record before us and for the reasons explained below, we disagree with Patent Owner that Menard is a “real party in interest” under § 315(b). See Resp. 77–82; Sur-reply 27–28. First, the circumstances here differ materially from the circumstances in Ventex. There, two agreements defined the relationship between Ventex (the petitioner and manufacturer of Heatwave fabric) and Seirus (the alleged real party in interest and purchaser of Heatwave fabric). Ventex, IPR2017- 00651, Paper 152 at 7 & n.8. First, a 2013 Supplier Agreement “prevented Ventex from selling to Seirus competitors” and included an indemnity provision requiring Ventex to indemnify Seirus for losses arising from Ventex’s failure to perform certain obligations. Id. at 7, 14. Second, a 2016 Exclusive Manufacturing Agreement provided that Ventex would manufacture the Heatwave fabric only for Seirus in exchange for Seirus’s payment of an exclusivity fee. Id. at 7. Columbia (the patent owner) accused Seirus products incorporating the Heatwave fabric of infringing the patent at issue, and Columbia served Seirus with a complaint alleging patent infringement in 2014 more than two years before Ventex filed a petition in 2017. Id. at 5, 7. When determining that Seirus was a “real party in interest” under § 315(b), the Board reasoned that “Ventex and Seirus had a specially structured, preexisting, and well established business relationship with one another, including indemnification and exclusivity arrangements.” Ventex, IPR2017-00651, Paper 152 at 10; see id. at 12. Additionally, the Board noted that certain evidence “suggest[ed] that” slip op. at 32

  • PTAB / AIA Trials › Real party in interest / privityRpi dispute resolved for petitionerDecided for petitioner

    “G. Analysis 1. REAL PARTY IN INTEREST Based on the record before us and for the reasons explained below, we disagree with Patent Owner that Menard is a “real party in interest” under § 315(b). See Resp. 77–82; Sur-reply 27–28. First, the circumstances here differ materially from the circumstances in Ventex. There, two agreements defined the relationship between Ventex (the petitioner and manufacturer of Heatwave fabric) and Seirus (the alleged real party in interest and purchaser of Heatwave fabric). Ventex, IPR2017- 00651, Paper 152 at 7 & n.8. First, a 2013 Supplier Agreement “prevented Ventex from selling to Seirus competitors” and included an indemnity provision requiring Ventex to indemnify Seirus for losses arising from Ventex’s failure to perform certain obligations. Id. at 7, 14. Second, a 2016 Exclusive Manufacturing Agreement provided that Ventex would manufacture the Heatwave fabric only for Seirus in exchange for Seirus’s payment of an exclusivity fee. Id. at 7. Columbia (the patent owner) accused Seirus products incorporating the Heatwave fabric of infringing the patent at issue, and Columbia served Seirus with a complaint alleging patent infringement in 2014 more than two years before Ventex filed a petition in 2017. Id. at 5, 7. When determining that Seirus was a “real party in interest” under § 315(b), the Board reasoned that “Ventex and Seirus had a specially structured, preexisting, and well established business relationship with one another, including indemnification and exclusivity arrangements.” Ventex, IPR2017-00651, Paper 152 at 10; see id. at 12. Additionally, the Board noted that certain evidence “suggest[ed] that” slip op. at 32

  • Skill levelOther

    “C. Level of Ordinary Skill in the Art Factors pertinent to determining the level of ordinary skill in the art include (1) the educational level of the inventor; (2) the type of problems encountered in the art; (3) prior-art solutions to those problems; (4) the rapidity with which innovations are made; (5) the sophistication of the technology; and (6) the educational level of workers active in the field. Envtl. Designs, Ltd. v. Union Oil Co., 713 F.2d 693, 696–97 (Fed. Cir. 1983). Not all factors may exist in every case, and one or more of these or other factors may predominate in a particular case. Id. These factors are not exhaustive, but merely a guide to determining the level of ordinary skill in the art. Daiichi Sankyo Co. v. Apotex, Inc., 501 F.3d 1254, 1256 (Fed. Cir. 2007). Moreover, the prior art itself may reflect an appropriate skill level. Okajima v. Bourdeau, 261 F.3d 1350, 1355 (Fed. Cir. 2001). Petitioner asserts that a person of ordinary skill in the art at the ’336 patent’s effective filing date would have had “a bachelor’s degree in mechanical engineering, electrical engineering, optics, or physics with at least three years of experience working in the design of LED lights or lighting fixtures; a master’s degree in one of the above disciplines with at least two years of experience; or equivalent experience.” Pet. 14 (citing Ex. 1004 ¶¶ 26–29). Dr. Eden’s testimony supports Petitioner’s assertion. See Ex. 1004 ¶¶ 27–28. Patent Owner “adopts for purposes of this proceeding only” Petitioner’s description of an ordinarily skilled artisan. Resp. 10 (citing Pet. 14). We adopt Petitioner’s description of an ordinarily skilled artisan because it comports with the technology and claims of the ’336 patent as” slip op. at 40

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

    “Alleged Objective Indicia of Nonobviousness (i) General Principles Before reaching a conclusion about obviousness, we consider evidence concerning objective indicia of nonobviousness. See Apple, 839 F.3d at 1048. For such evidence to have substantial weight, “its proponent must establish a nexus between the evidence and the merits of the claimed invention.” ClassCo, Inc. v. Apple, Inc., 838 F.3d 1214, 1220 (Fed. Cir. 2016); see Ancora Techs., Inc. v. Roku, Inc., 140 F.4th 1351, 1361 (Fed. Cir. 2025) (noting that the Board did not err by requiring “a nexus to the challenged claims as opposed to the patent as a whole”). “[T]here is no nexus unless the evidence presented is ‘reasonably commensurate with the scope of the claims.’” ClassCo, 838 F.3d at 1220 (quoting Rambus Inc. v. Rea, 731 F.3d 1248, 1257 (Fed. Cir. 2013)). The patentee “bears the burden of showing that a nexus exists.” WMS Gaming, Inc. v. Int’l Game Tech., 184 F.3d 1339, 1359 (Fed. Cir. 1999). A rebuttable presumption of nexus arises “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.’” Fox Factory, Inc. v. SRAM, LLC, 944 F.3d 1366, 1373 (Fed. Cir. 2019) (quoting Polaris Indus., Inc. v. Arctic Cat, Inc., 882 F.3d 1056, 1072 (Fed. Cir. 2018)). Whether a rebuttable presumption of nexus arises “turns on the nature of the claims and the specific facts.” Teva Pharms. Int’l GmbH v. Eli Lilly & Co., 8 F.4th 1349, 1362 (Fed. Cir. 2021). The presumption analysis should consider the unclaimed features in the product tied to the objective evidence to assess their significance and impact on the correspondence between the patented invention and the product. Quanergy Sys., Inc. v. Velodyne Lidar USA, Inc., 24 F.4th 1406, 1418 (Fed. Cir. 2022). When, “for example, the patented invention is only a small component of the product tied to the objective evidence, there is no presumption of nexus.” Henny Penny Corp. v. Frymaster LLC, 938 F.3d 1324, 1333 (Fed. Cir. 2019). Absent a presumption of nexus, the patentee may prove nexus by” slip op. at 76

  Patent outcomesUS 10,299,336 mixed
  § 102 anticipation§ 103 obviousnesscites Phillips · KSR · Graham
  Patents in suitUS 10,299,336
• Luminex International Co., Ltd. / Menard, Inc. v. Signify Holdings B.V.Some claims unpatentable
  PTAB · Aug 13, 2025 · IPR2024-00101 · APJ Steven M Amundson · IPR · Final written decision

  Claims 1–7, 9–15, and 18–20 are unpatentable; claims 8, 16, and 17 are not shown unpatentable under the asserted grounds.

  RulingsFinal written decision

  • PTAB / AIA Trials › Real party in interest / privityRpi dispute resolved for patent ownerDecided for patent owner

    “G. Analysis 1. REAL PARTY IN INTEREST Based on the record before us and for the reasons explained below, we” slip op. at 32

  • PTAB / AIA Trials › §315(b) time barDecided for patent owner

    “III. WHETHER THE PETITION IS TIME BARRED The parties dispute whether the Petition is time barred based on a” slip op. at 18

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

    “vacated the panel’s decision denying institution. Paper 12, 6. Among other things, the Director determined based on a “review of the current record” that (1) Menard is not a real party in interest in this proceeding and (2) Menard is not a privy of Petitioner. Id. at 5. Further, the Director remanded the case to the panel and instructed the panel “to determine whether the Petition presents a reasonable likelihood of prevailing with respect to at least one of the challenged claims under 35 U.S.C. § 314(a), and to determine whether to institute inter partes review accordingly.” Id. at 5–6.” slip op. at 3

  • BurdenMixed

    “U.S. Patent No. 10,299,336 B2 (“the ’336 patent”) (Exhibit 1001). For the reasons explained below, a preponderance of the evidence shows that claims 1–7, 9–15, and 18–20 in the ’336 patent are unpatentable and does not show that claims 8, 16, and 17 are unpatentable. See 35 U.S.C. § 316(e) (2024).” slip op. at 2

  Patent outcomesUS 10,299,336 mixed
  § 103 obviousnesscites Phillips · KSR · Graham
  Patents in suitUS 10,299,336
• Billerud Aktiebolag (Publ) v. Westrock MWV, LLCSome claims unpatentable
  PTAB · Mar 12, 2025 · IPR2023-01206 · APJ Elizabeth M Roesel · IPR · Final written decision

  Claims 1, 2, and 4–22 are unpatentable as obvious; claim 23 was not shown unpatentable. Substitute claims 25–26 are allowed, while 24 and 27 are denied for lack of written-description support.

  RulingsFinal written decision

  • Expert testimonyPetitioner expert discountedOther

    “Exhibits 1013 and 1014 are also not admissible as expert testimony because Mr. Wirén is not “qualified as an expert by knowledge, skill, experience, training, or education.” Fed. R. Evid. 703. “To offer expert testimony from the perspective of a skilled artisan in a patent case—like for claim construction, validity, or infringement—a witness must at least have ordinary skill in the art. Without that skill, the witness’ opinions are neither relevant nor reliable.” Kyocera Senco Indus. Tools Inc. v. Int’l Trade Comm’n, 22 F.4th 1369, 1376–77 (Fed. Cir. 2022). Mr. Wirén does not meet our definition of a person of ordinary skill in the art. See Section II.B, supra. That definition is based on the undisputed testimony of Messrs. Zotterman and Klass. Ex. 1003 ¶ 24; Ex. 2003 ¶ 26. Although Mr. Wirén has a Master’s of Science in chemical engineering, he lacks any experience or specialization in paperboard manufacturing. Ex. 2011, 12:1–10, 19:6–25, 20:2–7. We therefore agree with Patent Owner that Exhibits 1013 and 1014 are the testimony of Mr. Wirén and should be excluded from evidence because Mr. Wirén is not a person of ordinary skill in the relevant art. PO MTE 5–6, 9; Sundance, Inc. v. DeMonte Fabricating Ltd., 550 F.3d 1356, 1362 (Fed. Cir. 2008) (“Unless a patent lawyer is also a qualified technical” slip op. at 61

  • Skill levelSkill level board ownOther

    “Level of Ordinary Skill in the Art Based on the testimony of the parties’ witnesses, we determine that a person of ordinary skill in the art would have had a bachelor’s degree in paper science and engineering, chemical engineering, process engineering, mechanical engineering, or a related degree, with three to five years of experience in paperboard manufacturing, or a master’s degree in paper science and engineering, chemical engineering, process engineering, or mechanical engineering, or a similar field with a specialization in paperboard manufacturing. Ex. 1003 ¶ 24; Ex. 2003 ¶ 26. We find that the level of ordinary skill in the art, as articulated above, is consistent with the level of technical understanding and competence reflected in the ’142 Patent Specification and the asserted prior art references.” slip op. at 10

  • Claim Construction › Intrinsic evidence (Phillips canons) › Specification disavowal / 'present invention' languageTerm construed petitioner constructionDecided for petitioner

    “A claim construction that excludes a particular element is viewed as a “negative limitation.” Ethicon LLC v. Intuitive Surgical, Inc., 847 Fed. App’x 901, 907 (Fed. Cir. Mar. 15, 2021). “[S]uch exclusions must find support either in ‘the words of the claim’ or through an ‘express disclaimer or independent lexicography in the written description that would justify adding that negative limitation.’” Id. (citing Omega Eng’g, Inc. v. Raytek Corp., 334 F.3d 1314, 1323 (Fed. Cir. 2003); CCS Fitness, Inc. v. Brunswick Corp., 288 F.3d 1359, 1366–67 (Fed. Cir. 2002)). “The standards for finding lexicography and disavowal are exacting.” GE Lighting Sols., LLC v. AgiLight, Inc., 750 F.3d 1304, 1309 (Fed. Cir. 2014). “To act as its own lexicographer, a patentee must ‘clearly set forth a definition of the disputed claim term,’ and ‘clearly express an intent to define the term.’” Id. (citing Thorner, 669 F.3d at 1365). Similarly, disclaimer or disavowal requires that the specification or prosecution history demonstrate that the invention does not include a particular feature. Id. Here, we find no claim language, lexicography, or disclaimer in the ’142 Patent or its file history that would support defining a “hot-hard calender” as requiring that only one of the two rollers be heated to an elevated temperature.” slip op. at 12

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

    “a contact surface of said thermo-roller is heated to an elevated temperature of at least 250°F.” Petitioner shows persuasively that the temperature limitation is taught by the combination of Fugitt and Papermaking. Pet. 32–34. Fugitt discloses that “[t]he rolls of the calender may be steam heated.” Ex. 1004 ¶ 26. In a section titled “Heated Rolls,” Papermaking discloses that “Steam can be used up to 170°C [338°F] surface temperature.” Ex. 1010, 95, 98. Petitioner is thus correct that, “[w]hile Fugitt teaches that a hot calender may be steam heated, Papermaking clarifies that one of ordinary skill in the art would understand that steam heated thermo-rollers may reach up to 338°F.” Pet. 36. Based on these disclosures, we are persuaded by Mr. Zotterman’s testimony that it would have been “obvious to heat the thermo-roller of Fugitt to at least 250°F.” Ex. 1003 ¶ 159. combine Fugitt and Papermaking because of Papermaking’s status as a “trusted handbook[],” because both references disclose a method of manufacturing a paperboard structure with hot calendering,” and “because of the known advantages of heated rollers.” Pet. 36–37; Ex. 1003 ¶¶ 157, 159, 162. Petitioner’s contention is supported by Papermaking’s disclosures that, for cartonboard, “[p]recalendering is used before the coater to reduce roughness and porosity” and “[h]igh thermo roll temperatures (in some cases over 200°C) result in bulk savings because of the temperature gradient.” Ex. 1005, 80–82; see also Pet. 38; Ex. 1003 ¶ 164 (citing these disclosures). Papermaking’s disclosed range of “up to 170°C [338°F]” for steam- heated rolls (Ex. 1010, 98), overlaps the claimed range of “at least 250°F.” Patent Owner agrees. Tr. 27:11–13. “If the relevant comparison between a disputed claim limitation and the prior art pertains to a range of overlapping values, ‘. . . even a slight overlap in range establishes a prima facie case of obviousness.’” Genentech, Inc. v. Hospira, Inc., 946 F.3d 1333, 1341 (Fed. Cir. 2020) (citing In re Peterson, 315 F.3d 1325, 1329 (Fed. Cir. 2003)). “[S]uch an overlap creates a presumption of obviousness, and . . . the burden of production falls upon the patentee to come forward with pertinent evidence that the overlapping range would not have been obvious in light of the prior art.” Id. (citing E.I. DuPont de Nemours & Co. v. Synvina C.V., 904 F.3d 996, 1006, 1008 (Fed. Cir. 2018)). slip op. at 21

  Patent outcomesUS 11,293,142 mixed
  Claim construction§ 103 obviousness§ 112 disclosurecites Phillips · KSR · Graham
  Patents in suitUS 11,293,142
• 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

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.