- Samsung Display Co., Ltd. v. Pictiva Displays International Ltd.All claims unpatentablePTAB · Feb 9, 2026 · IPR2024-01095 · APJ Garth D Baer · IPR · Final written decision
Claims 2, 4, 9–12, and 17 are unpatentable under § 103 because the prior-art combinations teach the claimed features and have adequate motivation and reasonable expectation of success.
RulingsFinal written decision- Skill levelSkill level petitioner adoptedDecided for petitioner
“B. Level of Ordinary Skill in the Art Petitioner contends a person of ordinary skill in the art “would have had a Bachelor’s degree in chemistry, physics, or a comparable field of study, and at least three years of research or industrial experience with organic optoelectronic light-emitting devices.” Pet. 10. Further, “[a]n individual with additional education could have less research or industrial experience and vice versa.” Id. Patent Owner does not dispute Petitioner’s formulation. See generally PO Resp. We adopt Petitioner’s uncontested proposed definition because it is consistent with the disclosures of the asserted prior art. See, e.g., Ex. 1006, code (57); Ex. 1011, code (57).” slip op. at 7
- Obviousness (§103) › Motivation to combine / reasonable expectation of successMotivation foundReasonable expectation foundUnpatentable
“electron-hopping dopant. See In re Fulton, 391 F.3d 1195, 1201 (Fed. Cir. 2004) (“The prior art’s mere disclosure of more than one alternative does not constitute a teaching away from . . . alternatives because such disclosure does not criticize, discredit, or otherwise discourage the solution claimed.”). As Petitioner explains, “Liq acts as an n-dopant in Ma,” which “increases ETL conductivity.” Pet. Reply 10. Patent Owner does not contest that Liq acts as an n-dopant in Ma. See Pet. Reply 30. Thus, Petitioner’s proposed combinations “substitute one known n-dopant for another to further the same goal of improving ETL conductivity.” Pet. Reply 10. Next, Patent Owner faults Petitioner for failing to show that using Ma’s Liq dopant in Diekmann’s/Suzuki’s ETL would result in lower diffusion or higher efficiencies as compared to Diekmann’s/Suzuki’s preferred n-dopants, which included cesium, barium, or lithium fluoride. PO Resp. 31–35; see PO Sur-reply 4–5. We disagree with Patent Owner’s argument because Petitioner does not need to show that Ma’s Liq n-dopant “was an improvement in a categorical sense” over Diekmann’s/Suzuki’s n-dopants, so long as Ma’s n-dopant was known and one skilled in the art would understand that implementing it had advantages. See Intel Corp. v. Pact XPP Schweiz AG, 61 F.4th 1373, 1381 (Fed. Cir. 2023) (quotation marks omitted); In re Fulton, 391 F.3d 1195, 1200 (Fed. Cir. 2004) (“[O]ur case law does not require that a particular combination must be the preferred, or the most desirable, combination described in the prior art.”). Petitioner does not assert skilled artisans would have used Liq because it was a superior to Diekmann’s/Suzuki’s preferred dopants, but because doping ETLs with Liq had known benefits including lower driving voltage and enhanced power efficiency from enhanced carrier injection increased transport conductivity, as compared to an undoped device. Pet. 37 (citing Ex. 1010, 813). That other potentially suitable or even superior n-dopants were also known does not make Liq nonobvious. Given Liq’s benefits outlined above, Petitioner has articulated sufficient reasoning with rational underpinning to support the legal conclusion that its proffered combination of Ma’s known dopant in Diekmann’s/Suzuki’s device would have been obvious to one skilled in the art. See KSR Int’l Co. v. Teleflex Inc., 550 U.S. 398, 418 (2007).” slip op. at 12
- Novelty / Anticipation (§102) › Prior-art status of a reference › Printed publication / public accessibilityPrinted publication establishedDecided for petitioner
“1. Whether Ma Qualifies as a Prior Art Printed Publication First, Patent Owner argues that Petitioner has not demonstrated that Ma was publicly accessible in August 2008 so as to qualify as prior art. PO 11 As Petitioner notes, the district court adopted a claim construction requiring only “one or more wavelengths” in the infrared-to-UV spectrum. PO Resp. 26 (citing Ex. 2031, 47–48). Resp. 16–24. We addressed this same issue in our Final Written Decision in IPR2024-01094. IPR2024-01094, Paper 42 at 9–13. As we explained there, Ma qualifies as prior art printed publication because the record evidence supports what Ma says on its face—that it was published online on August 29, 2008 by an Elsevier, an established publisher, in Synthetic Metals, which is a reputable journal. Id. For the same reason explained in IPR2024-01094, we agree with Petitioner that Ma qualifies as a prior art printed publication.” slip op. at 10
Patent outcomesUS 11,828,425 unpatentable§ 102 anticipation§ 103 obviousnessPatents in suitUS 11,828,425 - Samsung Display Co., Ltd. v. Pictiva Displays International Ltd.Some claims unpatentablePTAB · Jan 22, 2026 · IPR2024-01094 · APJ Grace Karaffa Obermann · IPR · Final written decision
Claims 1, 2, 6, and 8–14 are unpatentable as obvious over Ma; claims 3 and 4 were not shown unpatentable over Werner.
RulingsFinal written decision- Skill levelSkill level petitioner adoptedDecided for petitioner
“Petitioner contends: A person of ordinary skill in the art (“POSA”) at the time of the alleged invention of the ’223 patent would have had a university degree in chemistry and additional expertise or a second university degree in the field of electrical engineering, particularly optoelectronics, or alternatively a university degree in electrical engineering and additional expertise or a second university degree in the field of chemistry. The person of ordinary skill in the art has spent several years studying the structure and function of organic optoelectronic components, in particular OLEDs, and has detailed knowledge of the chemical structure of light-emitting organic layers and the transport of charge carriers to these layers. In this respect, the person of ordinary skill in the art works at the interface between electrical engineering/physics (charge carrier transport and light emission processes in optoelectronic components) and chemistry, in particular organic chemistry (materials and layer stack combinations suitable). Pet. 14 (citing Ex. 1003 ¶¶ 46–47). Patent Owner does not dispute Petitioner’s contention. See generally Resp. Neither party indicates that the result would change depending on the definition selected. We adopt Petitioner’s uncontested proposed definition, because it is consistent with the disclosures of the asserted prior art references. See Ex. 1005, (code 57); Ex. 1007, 8107 (abstracts of the references asserted in the patentability challenges).” slip op. at 8
- Claim Construction › Threshold & procedure › Whether a term needs construction (O2 Micro)No construction neededOther
“history pertaining to the patent.” 37 C.F.R. § 42.100(b). Under that standard, claim terms generally are given their plain and ordinary meaning as would have been understood by the ordinarily skilled artisan at the time of the invention and within the context of the entire patent disclosure. See Phillips v. AWH Corp., 415 F.3d 1303, 1313 (Fed. Cir. 2005) (en banc). We construe claim terms only as relevant to the parties’ contentions and only to the extent necessary to resolve the issues in dispute. See Vivid Techs., Inc. v. Am. Sci. & Eng’g, Inc., 200 F.3d 795, 803 (Fed. Cir. 1999); Nidec Motor Corp. v. Zhongshan Broad Ocean Motor Co., 868 F.3d 1013, 1017 (Fed. Cir. 2017). Neither party indicates that an express construction for any claim term is necessary to resolve the disputes at hand. Pet. 15; see generally Resp. On this record, we determine that no claim term requires express construction for purposes of this Decision. In our analysis of the challenges, however, we discuss the meaning of the terms “metal complex” and “central metal atom,” which appear in claim 1 (Ex. 1001, 19:19–20) to the extent necessary to resolve Patent Owner’s contention that Petitioner fails to establish that Ma invalidates claim 1. See Resp. 53, 56–58.” slip op. at 9
- Novelty / Anticipation (§102) › Prior-art status of a reference › Printed publication / public accessibilityPrinted publication establishedDecided for petitioner
“Whether Ma qualifies as a “printed publication” involves an inquiry into the facts and circumstances surrounding the reference’s disclosure to members of the public. In re Klopfenstein, 380 F.3d 1345, 1350 (Fed. Cir. 2004). A reference is considered “publicly accessible” upon a satisfactory showing that the document has been “disseminated or otherwise made available to the extent that persons interested and ordinarily skilled in the subject matter or art exercising reasonable diligence[] can locate it.” Kyocera Wireless Corp. v. ITC, 545 F.3d 1340, 1350 (Fed. Cir. 2008); see Hulu, LLC v. Sound View Innovations, LLC, IPR2018-01039, Paper 29, 10– 11 (PTAB Dec. 20, 2019) (precedential).” slip op. at 10
- Obviousness (§103) › Motivation to combine / reasonable expectation of successMotivation foundUnpatentable
“Based on the information presented, we find Petitioner has the better position. Patent Owner admits that joint vaporization means “two materials vaporize together.” Reply 21 (quoting Resp. 54). As Petitioner argues, “This is what Ma discloses.” Id. We agree with Petitioner that Ma describes a “two-component” electron transport layer having a “thickness with one value.” Id.; see Ex. 1007, 811 (reporting a “co-deposited” application of “BPhen:LiQ” that is “50 nm thick”). Ma’s disclosure, thereby, strongly “indicates that the two components were vaporized together––as opposed to creating a ‘macroscopically homogenous form’” prepared by sequentially vaporizing the individual components as Patent Owner “hypothesizes.” Reply 21 (citing Ex. 1020 ¶¶ 42–44; Ex. 2041 ¶¶ 155–157); see Resp. 54– 55; see also Ex. 1007, 811 (Ma’s description of its device fabrication, appearing in the third paragraph of the experiments section). Petitioner further advances evidence that “[p]reparing a layer that is ‘macroscopically homogeneous’ but potentially microscopically heterogeneous,” as Patent Owner postulates, “would introduce excessive variability and render the data noncomparable and unreliable, thus undermining the experiment’s purpose.” Reply 21 (citing Ex. 1020 ¶ 44); see Resp. 54–55. Patent Owner presents no counterargument or evidence that is persuasive to undercut Petitioner’s reasoning or evidence on that point. See Sur-reply 19–22. Petitioner also argues that an ordinarily skilled artisan would have recognized “that vaporizing materials together would best achieve Ma’s objective of assessing the current density using different Liq doping percentages.” Reply 22 (citing Ex. 1007, 811; Ex. 1020 ¶ 51). Here again, Petitioner’s evidence on point stands uncontested. See Sur-reply 19–22 (declining to contest that point). On this record, therefore, we agree with Petitioner that, as to the relevant disclosure in Ma, “the most natural interpretation of ‘co-deposition’ for forming a layer, particularly when there is nothing to indicate that the materials” are “vaporized sequentially,” is that the materials are co-deposited by joint vaporization. Reply 22 (citing Ex. 1020 ¶ 46–51). We further agree that, “[u]nder a preponderance standard, Ma’s disclosures are sufficient to render joint vaporization at least obvious.” Id. For the above reasons, we determine that Petitioner demonstrates by a preponderance of the evidence that Ma discloses joint vaporization as required by the challenged claims.” slip op. at 15
Patent outcomesUS 8,558,223 mixedClaim construction§ 102 anticipation§ 103 obviousnesscites Phillips · GrahamPatents in suitUS 8,558,223 - Samsung Display Co., Ltd. v. Pictiva Displays International Ltd.All claims unpatentablePTAB · Jan 22, 2026 · IPR2024-01093 · APJ Grace Karaffa Obermann · IPR · Final written decision
Claims 1–16 are unpatentable: claims 1–13 and 15–16 on anticipation and obviousness grounds, and claim 14 on obviousness over Choulis.
RulingsFinal written decision- Skill levelSkill level petitioner adoptedDecided for petitioner
“A person of ordinary skill in the art (“POSITA”) at the time of the alleged invention of the ’164 patent would have had a Bachelor’s degree in chemistry, physics, or a comparable field of study, and at least three years of research or industrial experience with organic optoelectronic light-emitting devices. An individual with additional education could have less research or industrial experience and vice versa. Pet. 12. Patent Owner repeatedly refers to “a POSITA” without addressing the definition of that term or contesting Petitioner’s proposed definition. See Resp. 1, 2 n.1, 3, 8, 9, 15–21, 23, 26, 29, 32–33, 35, 37, 38, 40, 41, 44–49, 51–57, 61, 62 (bare references to “a POSITA”). Neither party indicates that the ultimate result on patentability would change depending on the definition selected. We adopt Petitioner’s proposed definition, which is not contested, because it is consistent with the disclosures of the asserted prior art. See Ex. 1004, (code 57); Ex. 1006, code (57); Ex. 1008, code (57); Ex. 1009, code (57) (abstracts of the references asserted in the patentability challenges).” slip op. at 7
- Claim Construction › Intrinsic evidence (Phillips canons) › Specification disavowal / 'present invention' languageDisclaimer not foundTerm construed board ownDecided for petitioner
“because no information raised during the trial phase of this review changes the calculus: First and foremost, the plain terms of claim 1 include no language from which we reasonably can impose limits on the phrase “matrix material” as urged by Patent Owner. In addition, the specification includes no special definition of that phrase that supports importing Patent Owner’s proposed narrowing limitation into the claim. Furthermore, we are directed to no disclaimer of claim scope during patent prosecution that would support Patent Owner’s twice-rejected argument that the phrase “matrix material” in claim 1 excludes embedded dopants and dispersed agglomerations. And the extrinsic evidence advanced by Patent Owner during this review is ineffective to override the clear interpretation of “matrix material” that is established by the intrinsic evidence. Reply 1–7.10” slip op. at 8
- Novelty / Anticipation (§102) › Anticipation standard (single reference, every element)UnpatentableNot shown unpatentableMixed
“We find that Petitioner establishes by a preponderance of the evidence that Choulis anticipates claim 13. We agree with Petitioner, in that regard, that Choulis explicitly teaches “using spin-coating as a method for depositing materials, which involves a simultaneous application process” as required by claim 13. Reply 16 (citing Pet. 40–41; Ex. 1044 ¶ 45).16 We 15 Petitioner raises Djobo as a background reference supporting that Choulis anticipates deposition of PVK by evaporation. Pet. 41. Patent Owner counters that Djobo, to the contrary, shows that Choulis does not teach deposition of PVK by evaporation. Resp. 48. In other words, both parties cite Djobo in connection with the ground based on anticipation by Choulis. Against that backdrop, we determine that Patent Owner waives any argument that Petitioner improperly cites Djobo as a background reference in support of the anticipation challenge, which is based on Choulis alone. Resp. 48 (nowhere asserting that the challenge is deficient on that basis). That waiver arises because no argument, in that regard, is raised in Patent Owner’s Response see Inst. Dec. 34 (“The Board shall deemed waived any issue not raised by Patent Owner in a timely response to the Petition . . . .”). 16 Patent Owner’s statement that “spin coating tends to cause phase separation” is not developed adequately on this record and, therefore, is further agree with Petitioner that Patent Owner “has not contested this point.” Resp. 48. “Therefore, there is no genuine dispute regarding the unpatentability of claim 13,” although Patent Owner raises “arguments concerning evaporation, which is a distinct process from spin-coating” relevant to the additional limitations of claim 14. Reply 16. We determine that Petitioner establishes by a preponderance of the evidence that Choulis anticipates claim 13. Patent Owner, however, has the better position on whether Choulis anticipates claim 14, which “includes the requirement of applying matrix materials via evaporation coating.” Reply 16. Petitioner seems to abandon that challenge in the Reply by raising arguments that appear, on this record, to bear exclusively on whether the subject matter of claim 14 would have been obvious over Choulis.17 Id. at 16–17. Those arguments are insufficient to counter Patent Owner’s reasons why Choulis does not anticipate the “evaporation coating” limitation of claim 14. Compare id., with Resp. 48. On this record, therefore, we determine that Petitioner does not establish by a preponderance of the evidence that Choulis anticipates claim 14. unpersuasive to persuade us “that Choulis does not have three matrix materials.” Sur-reply 15. That argument runs counter to Choulis’s explicit, intrinsic disclosures, which illustrate (Ex. 1004, Fig. 4) and describe (id. ¶ 30) an organic light emitting layer composed of three matrix materials. See Pet. 24–25 (citing Ex. 1004, Fig. 4, ¶ 30); see also Ex. 1003 ¶¶ 85–88 (persuasive declaration testimony of Dr. Holmes, cited at Pet. 24–25). 17 There is some confusion on this point, given that both parties sometimes collapse, into a single argument, whether Choulis anticipates or renders obvious claim 1. Compare Resp. 48, with Reply 16–17.” slip op. at 35
- Obviousness (§103) › Motivation to combine / reasonable expectation of successUnpatentableMotivation foundUnpatentable
“On this record, therefore, we determine that Choulis, at minimum, suggests that a person of ordinary skill in the art at the time of the invention would have recognized PMMA as a suitable alternative to PVK in Choulis’s Figure 4 embodiment, notwithstanding any differences raised by Patent Owner. Ex. 1004 ¶ 44. Patent Owner’s argument that no disclosure in Choulis suggests that an ordinarily skilled artisan “would have found it desirable to use PMMA in place of PVK in Choulis’s devices” misses the mark, where Choulis includes both PMMA and PVK in lists of materials suitable for use as host or matrix materials. Resp. 38; Ex. 1004 ¶ 44. “Our caselaw is clear. It’s not necessary to show that a combination is ‘the best option, only that it is a suitable option.’” Intel Corp. v. Qualcomm Inc., 21 F.4th 784, 800 (Fed. Cir. 2021). Even if Choulis does not expressly disclose substituting PMMA for PVK in the Figure 4 embodiment, “an ordinarily skilled artisan would have found it obvious to make that substitution.” Reply 10 (citing Pet. 31 (citing Ex. 1003 ¶ 100; Ex. 1044 ¶ 23)). The suggestion for that substitution is set forth unambiguously in Choulis’s listing of both “PVK” and “PMMA” as materials suitable for use as a first “host” material in Choulis’s organic functional layer; that is, “the light emitting layer” that is “described above” in Figure 4. Ex. 1004 ¶ 44. ii. Alternative Reasoning for Replacing PVK with PMMA Patent Owner counterargues that using PPMA in place of PVK would have been understood to “upset the hole and electron balance,” as well as “affect hole-charge recombination,” and “degrade the performance of the resulting OLED system.” Resp. 37. Petitioner responds with evidence that “it would have been a routine task for” an ordinarily skilled artisan “to optimize the composition of each component within the light-emitting layer to achieve the desired charge balance.” Reply 11 (citing Ex. 1004 ¶ 24). Petitioner’s response brings to light a second reason why an ordinarily” slip op. at 40
Patent outcomesUS 8,723,164 unpatentableClaim construction§ 102 anticipation§ 103 obviousnesscites Phillips · KSR · GrahamPatents in suitUS 8,723,164 - Samsung Display Co., Ltd. v. Pictiva Displays International Ltd.All claims unpatentablePTAB · Jan 22, 2026 · IPR2024-01095 · APJ Garth D Baer · IPR · Final written decision
Claims 2, 4, 9–12, and 17 are unpatentable under § 103 over the Diekmann- and Suzuki-based combinations with the respective secondary references.
RulingsFinal written decision- Skill levelSkill level petitioner adoptedDecided for petitioner
“had a Bachelor’s degree in chemistry, physics, or a comparable field of study, and at least three years of research or industrial experience with organic optoelectronic light-emitting devices.” Pet. 10. Further, “[a]n individual with additional education could have less research or industrial experience and vice versa.” Id. Patent Owner does not dispute Petitioner’s formulation. See generally PO Resp. We adopt Petitioner’s uncontested proposed definition because it is consistent with the disclosures of the asserted prior art. See, e.g., Ex. 1006, code (57); Ex. 1011, code (57).” slip op. at 7
- BurdenUnpatentable
“III. OBVIOUSNESS ANALYSIS Petitioner contends that claims 2, 4, 9–12, and 17 are unpatentable under 35 U.S.C. § 103. For the reasons explained below, we find that Petitioner has shown by a preponderance of evidence that these claims are unpatentable over the asserted prior art.” slip op. at 7
- Novelty / Anticipation (§102) › Prior-art status of a reference › Printed publication / public accessibilityPrinted publication establishedDecided for petitioner
“Resp. 16–24. We addressed this same issue in our Final Written Decision in IPR2024-01094. IPR2024-01094, Paper 42 at 9–13. As we explained there, Ma qualifies as prior art printed publication because the record evidence supports what Ma says on its face—that it was published online on August 29, 2008 by an Elsevier, an established publisher, in Synthetic Metals, which is a reputable journal. Id. For the same reason explained in IPR2024-01094, we agree with Petitioner that Ma qualifies as a prior art printed publication.” slip op. at 11
- Obviousness (§103) › Motivation to combine / reasonable expectation of successMotivation foundDecided for petitioner
“additional feature in claims 2 and 12, Patent Owner raises a number of challenges to Petitioner’s asserted rationale for combining Ma. See PO Resp. 27–47. First, Patent Owner asserts that skilled artisans would not have used Ma’s Liq dopant in Diekmann/Suzuki because both employ electron-donor dopants that operate differently from Liq’s electron-hopping dopant. Id. at 28–31. We disagree with Patent Owner’s argument because it highlights a difference in the references’ dopants without identifying any incompatibility. Even if Diekmann and Suzuki teach electron-donor type ndopants as Patent Owner asserts, neither precludes or disparages Ma’s electron-hopping dopant. See In re Fulton, 391 F.3d 1195, 1201 (Fed. Cir. 2004) (“The prior art’s mere disclosure of more than one alternative does not constitute a teaching away from . . . alternatives because such disclosure does not criticize, discredit, or otherwise discourage the solution claimed.”). As Petitioner explains, “Liq acts as an n-dopant in Ma,” which “increases ETL conductivity.” Pet. Reply 10. Patent Owner does not contest that Liq acts as an n-dopant in Ma. See Pet. Reply 30. Thus, Petitioner’s proposed combinations “substitute one known n-dopant for another to further the same goal of improving ETL conductivity.” Pet. Reply 10. Next, Patent Owner faults Petitioner for failing to show that using Ma’s Liq dopant in Diekmann’s/Suzuki’s ETL would result in lower diffusion or higher efficiencies as compared to Diekmann’s/Suzuki’s preferred n-dopants, which included cesium, barium, or lithium fluoride. PO Resp. 31–35; see PO Sur-reply 4–5. We disagree with Patent Owner’s argument because Petitioner does not need to show that Ma’s Liq n-dopant “was an improvement in a categorical sense” over Diekmann’s/Suzuki’s n-dopants, so long as Ma’s n-dopant was known and one skilled in the art would understand that implementing it had advantages. See Intel Corp. v. Pact XPP Schweiz AG, 61 F.4th 1373, 1381 (Fed. Cir. 2023) (quotation marks omitted); In re Fulton, 391 F.3d 1195, 1200 (Fed. Cir. 2004) (“[O]ur case law does not require that a particular combination must be the preferred, or the most desirable, combination described in the prior art.”). Petitioner does not assert skilled artisans would have used Liq because it was a superior to Diekmann’s/Suzuki’s preferred dopants, but because doping ETLs with Liq had known benefits including lower driving voltage and enhanced power efficiency from enhanced carrier injection increased transport conductivity, as compared to an undoped device. Pet. 37 (citing Ex. 1010, 813). That other potentially suitable or even superior n-dopants were also known does not make Liq nonobvious. Given Liq’s benefits outlined above, Petitioner has articulated sufficient reasoning with rational underpinning to support the legal conclusion that its proffered combination of Ma’s known dopant in Diekmann’s/Suzuki’s device would have been obvious to one skilled in the art. See KSR Int’l Co. v. Teleflex Inc., 550 U.S. 398, 418 (2007).” slip op. at 11
Patent outcomesUS 11,828,425 unpatentable§ 102 anticipation§ 103 obviousnessPatents in suitUS 11,828,425 - CQV Co., Ltd. v. Merck Patent GmbHNo claims unpatentablePTAB · Oct 14, 2025 · PGR2021-00054 · APJ Kristina M Kalan · PGR · Remand
Claims 1–22 were not shown unpatentable because Sample C was not proven publicly available as prior art, and the original decision found the remaining grounds insufficient.
RulingsRemand decision- Novelty / Anticipation (§102) › Prior-art status of a reference › Printed publication / public accessibilityPrinted publication not establishedNot shown unpatentable
“We agree with Patent Owner that Petitioner’s evidence in Kuntz (Ex. 1026), the Annual Report (Ex. 1028), Masuko (Ex. 1029), and Pfaff (Ex. 1034) is insufficient to show that Xirallic® Sample C was available to the public before the effective filing date of the ’861 patent. Petitioner has not asserted, nor do we find, that any of these documents refer to or describe the lot of Xirallic® from which Sample C was taken. See Final Dec. 26. Kuntz, the Annual Report, Masuko, and Pfaff may support a finding that the Xirallic® line of products was available to the public, but these documents do not support a finding that the lot of Xirallic® from which Sample C was taken was available to the public. We also agree with Patent Owner that the Technical Data Sheets (Exs. 1005–1010), Certificates of Analysis (Exs. 1011–1017), and Material Safety Data Sheet (Ex. 1025) are insufficient to show that Xirallic® Sample C was available to the public. Petitioner has not asserted, nor do we find, that any of these documents refer to or describe the lot of Xirallic® from which Sample C was taken. See Final Dec. 26–27. Regardless of how the Technical Data Sheets were used in the Opposition against the European counterpart of the ’861 patent (Exs. 1040, 1041) and during the prosecution of the application from which the ’861 patent issued (Ex. 1003, 102–104), the Technical Data Sheets do not refer to or describe the lot of Xirallic® from which Sample C was taken. Moreover, as noted by Patent Owner, the Technical Data Sheets (Exs. 1005–1010) indicate that they are “preliminary” and Petitioner has not provided any evidence that the Technical Data Sheets were ever issued to the public, as opposed to just issued internally. See PO Resp. 18–19. We also find persuasive Patent Owner’s argument that the Technical Data Sheets are preliminary because other, later-dated technical data sheets (Exs. 2012, 2013) lack the “preliminary” label and list characteristics that are different from those in Exhibits 1005–1010. See PO Resp. 19 (comparing, e.g., Ex. 1009 and Ex. 2013; Ex. 1005 and Ex. 2012). The Technical Data Sheets may support a finding that the Xirallic® products they describe existed as of the dates on the documents, but they do not support a finding that the lot of Xirallic® from which Sample C was taken was available to the public.” slip op. at 20
- Expert testimonyPetitioner expert discountedPatent owner expert creditedOther
“witnesses. See Elbit Systems of Am., LLC v. Thales Visionix, Inc., 881 F.3d 1354, 1358 (Fed. Cir. 2018) (citing Trs. of Columbia Univ. v. Illumina, Inc., 620 F. App’x 916, 922 (Fed. Cir. 2015); Inwood Labs., Inc. v. Ives Labs., Inc., 456 U.S. 844, 856 (1982)). We have reviewed the witness testimony in the record and, more particularly, Mr. Choi’s deposition answers regarding Petitioner’s purchase of the lot of Xirallic® from which Sample C came. We find that Mr. Choi’s responses cast doubt on the credibility of his declaration testimony, namely with regard to the public availability of Sample C. Mr. Choi represented that he was involved in the purchase of the lot of Xirallic® from which Sample C was taken. Ex. 2011, 48:1–23. Mr. Choi stated that he instructed Petitioner’s marketing team manager to buy the sample from a distributor of Patent Owner’s products located in Europe. Id. at 48:24–49:4. Mr. Choi stated that he has evidence of the transaction, but refused to reveal the name of the company from which Petitioner purportedly purchased the lot of Xirallic® (id. at 49:5–50:3) and refused to produce an email in his possession that would corroborate his testimony regarding Petitioner’s acquisition of the product (id. at 50:8–16, 51:10–23). Mr. Choi represented that he does not remember how much Petitioner paid for Sample B. Id. at 56:4–5. Mr. Choi admitted that the entity from which Petitioner acquired the lot of Xirallic® from which Sample C was taken is “not currently a Merck distributor” (Ex. 2011, 50:4–7) and was not “a Merck distributor at the time” that “samples B and C were purchased” (id. at 51:25–52:2). According to Mr. Choi, the company is a “former distributor” of Patent Owner’s products. Id. at 52:3–6. Mr. Choi did not know, according to his testimony, when that unnamed entity first obtained the lot of Xirallic® (id. at 52:7–10) and he stated that he did not have personal knowledge of how the entity obtained the lot of Xirallic® (id. at 52:12–19). Instead, Mr. Choi assumed the entity was “able to obtain the sample through the routine course or process” the entity uses “to take samples or get samples.” Id. at 52:12–19. Mr. Choi believed the sample of Xirallic® from which Sample C was taken was sealed when Petitioner received it because samples from dealers are sealed, and he remembered observing that the package was from a dealer. Id. at 52:24– 54:25. However, Mr. Choi admitted that he did not obtain a technical data sheet or certificate of analysis for the lot of Xirallic® from which Samples B and C were taken. Id. at 59:6–11. Mr. Choi also answered questions regarding Petitioner’s purchase of Samples D and H. Ex. 2011, 62:20–66:8, 67:7–9, 73:12–13, 73:17–22. Similar to his testimony regarding Samples B and C, Mr. Choi admitted withholding an email regarding the purchase of the lot of Xirallic® from which Sample D was taken. Id. at 62:20–63:9. Mr. Choi also admitted that he did not know how Akzo USA or Axalta obtained the Xirallic® the companies sold to him, and admitted that Akzo USA was not a distributor of Patent Owner’s products at the time Petitioner purchased the product. Id. at 63:10–66:8, 73:17–22. Mr. Choi also admitted that Petitioner did not pay Akzo USA for the lot of Xirallic® from which Sample D was taken, and did not pay Axalta for the lot of Xirallic® from which Sample H was taken. Id. at 67:7–9, 73:12–13. Although Petitioner presents declaration testimony from Mr. Choi representing that he purchased the lot of Xirallic® from which Samples B and C were taken in October 2011 (Ex. 1004 ¶ 16), Mr. Choi’s declaration testimony lacks corroborating evidence, and his deposition testimony does not support that the product was available to the public, as we found in our Final Written Decision. See Final Dec. 27–28. Notably, Petitioner produced corroborating evidence for Mr. Choi’s acquisition of Samples A, H, and I. See Ex. 1004 ¶¶ 13 (citing Ex. 1047), 18 (citing Exs. 1024, 1025). However, Mr. Choi withheld similar evidence for the Xirallic® lots from which Samples B, C, and D were taken. See Ex. 2011, 50:8–16, 51:10–23, 62:20– 63:9; Final Dec. 28. As Patent Owner argues, there is “no information to determine when a contract was established, that there was consideration for the exchange, that the product was available to be delivered when the alleged transaction took place, or even when the product was delivered. Choi has no memory of what was paid for the product.” Sur-Reply 24–25; see also PO Resp. 13–14; PO Br. Rem. 2–4.” slip op. at 34
- Obviousness (§103) › Graham factors (scope of art, differences, level of skill)Not shown unpatentableNot shown unpatentable
“Based on the evidence discussed above, we are not persuaded that Petitioner has shown by a preponderance of the evidence that Sample C was available to the public. Regardless of whether a company avoids wasting shelf life of its products (Ex. 1004 ¶¶ 15–16), there is no persuasive evidence in the record showing that the lot of Xirallic® from which Sample C was taken was released from quality control and then made available to the public by Patent Owner. Mr. Choi’s testimony shows that Petitioner obtained the lot of Xirallic® from which Sample C was taken in an atypical manner (i.e., not from Patent Owner or one of Patent Owner’s current distributors) (Ex. 2011, 49:5–50:7, 50:8–16, 51:10–23, 51:25–52:6, 52:12– 19), and there is no evidence in the record to show that the lot of Xirallic® was intended for sale, rather than for experimental use only or for some other restricted use. Accordingly, we determine Petitioner has not demonstrated by a preponderance of the evidence that Sample C qualifies as prior art against the ’861 patent, and we determine that Petitioner has not shown by a preponderance of the evidence that the ’861 patent is unpatentable over the grounds relying on Sample C.” slip op. at 38
Patent outcomesUS 10,647,861 not shown unpatentable§ 102 anticipation§ 103 obviousnessPatents in suitUS 10,647,861 - PTAB · Oct 9, 2025 · IPR2025-00847 · APJ Brian D Range · IPR · Institution
Instituted IPR on claims 1–11 because Petitioners showed a reasonable likelihood of proving at least one challenged claim unpatentable across the asserted grounds.
RulingsInstitution decision- PTAB / AIA Trials › Institution threshold (reasonable likelihood / more likely than not)InstitutedInstituted
“unless the information presented in 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.” The following findings of fact and conclusions of law are not final, but are made for the sole purpose of determining whether Petitioners meet the threshold for initiating review. Any final decision shall be based on the full trial record, including any response timely filed by Patent Owner. Any arguments not raised by Patent Owner in a timely-filed response may be deemed waived. For the reasons stated below, we determine that Petitioner has established a reasonable likelihood that it would prevail with respect to at least one claim. We hereby institute an inter partes review as to claims 1–11 of the ’847 patent based upon Petitioners’ asserted grounds of unpatentability.” slip op. at 2
- Skill levelSkill level petitioner adoptedDecided for petitioner
“would have had a master’s degree in electrical engineering, physics, chemistry, materials science, or a related field and three years of work experience in semiconductor manufacturing, such as, for example, in integrated circuit device (or transistor) design and/or manufacturing,” and “[a]dditional relevant education could substitute for professional experience, and significant work experience or training could substitute for formal education.” Pet. 11 (citing Ex. 1003 ¶ 38). Patent Owner does not dispute the level of ordinary skill in the art. See generally Prelim. Resp. For purposes of this Decision, we adopt Petitioner’s proposal as reasonable and consistent with the ’847 patent specification and the prior art. See Okajima v. Bourdeau, 261 F.3d 1350, 1355 (Fed. Cir. 2001) (the prior art may reflect an appropriate level of skill in the art). slip op. at 8
- Claim Construction › Threshold & procedure › Whether a term needs construction (O2 Micro)No construction neededNot reached
“Petitioner does not propose any claim constructions, except to explain that the claim 7 limitation “the spacer further comprises an offset spacer, positioned between the gate and the spacer,” is “satisfied if one layer (an ‘offset spacer’) of the claimed ‘spacer’ lies between another layer of the ‘spacer’ and the gate.” Pet. 11. Patent Owner does not dispute Petitioner’s assertions or offer any claim constructions. See generally Prelim. Resp. Because resolution of Petitioner’s proposed construction is unnecessary to our analyses for purposes of this decision, we do not address the proposal here. 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)). We do not discern a need to construe any other claim language at this juncture because doing so would have no effect on our analyses below of Petitioner’s asserted grounds and will not assist in resolving the present controversy between the parties. See Realtime Data, LLC, 912 F.3d at 1375.” slip op. at 8
- Novelty / Anticipation (§102) › Anticipation standard (single reference, every element)Instituted
“a. Claim 1 Petitioner contends that claim 1 is anticipated by Lan or, alternatively, obvious in view of Lan. Pet. 18–26. Petitioner explains how Lan teaches or suggests each recitation of claim 1, and Petitioner’s position is supported by adequate evidence for institution. Id. (citing, e.g., Ex. 1003 ¶¶ 100–125). Petitioner, for example, persuasively compares the structure of Figure 12 of Lan to each limitation of claim 1. Id. Patent Owner does not dispute Petitioner’s contentions except to argue that Lan (and the Petition’s other asserted references) “Do Not Mention, Describe, or Concern ‘Raised Epitaxial Layers.’” Prelim. Resp. 22–24. Patent Owner does not persuasively undermine Petitioner’s position.” slip op. at 13
Claim construction§ 102 anticipation§ 103 obviousnesscites Phillips · KSR · GrahamPatents in suitUS 7,745,847 - Solus Advanced Materials Co., Ltd. v. SK Nexilis Co., Ltd.Rehearing deniedPTAB · Oct 7, 2025 · IPR2024-01462 · APJ Jo-Anne M Kokoski · IPR · Rehearing
The Board denied Solus’s rehearing request, leaving institution denied for claims 1–8 because the petition did not adequately show motivation to combine Hanafusa and Dobashi.
RulingsRehearing decision- RehearingRehearing, deniedDenied
“of the decision de novo, but instead review the decision for an abuse of discretion. 37 C.F.R. § 42.71(c). An abuse of discretion may be determined “if a decision is based on an erroneous interpretation of law, if a factual finding is not supported by substantial evidence, or if the decision represents” slip op. at 2
- Obviousness (§103) › Motivation to combine / reasonable expectation of successNot shown unpatentableMotivation not foundNot shown unpatentable
“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 Dobashi’s RSm values. Dobashi teaches that because RSm “can be adopted 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 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 4
§ 103 obviousnessPatents in suitUS 11,346,014 - Solus Advanced Materials Co., Ltd. v. SK Nexilis Co., Ltd.Rehearing deniedPTAB · Oct 7, 2025 · IPR2024-01461 · APJ Jo-Anne M Kokoski · IPR · Rehearing
The Board denied rehearing and left in place its denial of institution because Petitioner did not show that claims 1–10 were likely obvious over the asserted combinations.
RulingsRehearing decision- RehearingRehearing, deniedDenied
“II. STANDARD OF REVIEW When rehearing a decision on institution, we do not review the merits of the decision de novo, but instead review the decision for an abuse of discretion. 37 C.F.R. § 42.71(c). An abuse of discretion may be determined “if a decision is based on an erroneous interpretation of law, if a factual finding is not supported by substantial evidence, or if the decision represents an unreasonable judgment in weighing relevant factors.” Arnold Partnership v. Dudas, 362 F.3d 1338, 1340 (Fed. Cir. 2004) (citing In re 1 US 2013/0108922 A1, published May 2, 2013 (Ex. 1004, “Shinozaki”). 2 G. Khatibi, Temperature Dependent Elastic and Thermal Properties of Thin Copper Foils, Copper; Proceedings of the International Conference Copper ’06 (2006) (Ex. 1006, “Khatibi”). 3 Korean Patent Pub. No. 10-2012-0003485, published Jan. 10, 2012 (Ex. 1013; Ex. 1014 (English translation), “Toshio”). 4 US 2013/0108887 A1, published May 2, 2013 (Ex. 1012, “Kim”). 5 Griesi, M.B., Characterization of Electrodeposited Copper Foil Surface Roughness for Accurate Conductor Power Loss Modeling (2014) (Master’s Thesis, University of South Carolina) (Ex. 1015, “Griesi”). rehearing has the burden to show that the decision should be modified. 37 C.F.R. § 42.71(d). Additionally, the request for rehearing “must specifically identify all matters the party believes the Board misapprehended or overlooked, and the place where each matter was previously addressed in a motion, an opposition, or a reply.” Id.” slip op. at 2
- PTAB / AIA Trials › Institution threshold (reasonable likelihood / more likely than not)Not shown unpatentable
“For example, Dr. Randall does not provide adequate explanation or objective evidence to support his opinion that Khatibi’s use of a laser speckle based dilatometer instead of the claimed thermomechanical analyzer “is unlikely to significantly impact the CTE[6] value” because “variations in equipment and a heating speed of 5° C/min would not significantly alter the results.” Ex. 1003 ¶ 58. In particular, Dr. Randall neither explains what constitutes a “significant” impact on CTE, nor provides objective evidence to support his contention that equipment variations and heating differences would not “significantly alter” the resulting measurements. And although Dr. Randall opines that “the heating rate (5°C per minute) is typical for certain devices” such as a thermomechanical analyzer or dilatometer, and “[t]ypically, these devices use temperature ramp rates between 2°C and 20°C per minutes, so the ‘5° C./min’ recited in [1d] is common and should not drastically affect the measurement results,” Dr. Randall fails to point us to any evidence showing that these temperatures are “typical” or that the claimed heating rate is “common.” Id. ¶ 59 (emphases added).” slip op. at 4
- Obviousness (§103) › Motivation to combine / reasonable expectation of successMotivation not foundNot shown unpatentable
“Petitioner, however, does not adequately explain why a POSITA would have been motivated to modify Kim’s copper foil surface to have a Pc value of 19.2 as reported in Griesi. In particular, neither Petitioner nor Dr. Randall points us to, nor do we discern, any teaching in Griesi that a peak count of 19.2 provides any particular benefits or properties that would have lead a POSITA to modify Kim’s copper foil surface as Petitioner proposes. Instead, Petitioner’s arguments that a POSITA would have been motivated to modify Kim’s copper foil surface with Griesi’s peak count patent itself. See KSR Int’l Co. v. Teleflex Inc., 550 U.S. 398, 421 (2007) (stating that the fact finder must be aware “of the distortion caused by hindsight bias and must be cautious of arguments reliant upon ex post reasoning”). It was Petitioner’s burden to establish that the combined teachings Kim and Griesi disclose limitation [1g] as proposed. We are not persuaded that we misapprehended Petitioner’s argument when we determined that Petitioner did not meet that burden.” slip op. at 8
- BurdenDecided for patent owner
“It was Petitioner’s burden to establish the Khatibi, alone or in combination with Shinozaki, Toshio, and Kim, discloses limitation [1d]. We concluded that Petitioner failed to meet that burden for the reasons explained in our Decision. We are not persuaded that we overlooked or misapprehended Khatibi’s disclosures, or Petitioner’s evidence and explanation thereof, in doing so.7” slip op. at 5
§ 103 obviousnesscites KSRPatents in suitUS 10,811,689 - PTAB · Aug 13, 2025 · IPR2025-00068 · APJ Neil T Powell · IPR · Remand
On remand, the Board denied institution of IPR challenging claims 1–21, applying the construction of “association” used in the parallel petition.
RulingsRemand decision- RemandOther
“The Director Review Decision determined that we should not have instituted inter partes review in both proceedings. DR 1. Instead, we “should have construed [‘association’] and instituted review of, at most, one of the petitions.” Id. at 3. Given this, the Director Review Decision vacated this proceeding’s Institution Decision and the 70 Institution Decision, remanding “to the Board panel to determine which of the two proceedings, if Board should construe the term ‘association,’” the Director Review Decision instructed us to “consider the parties’ claim construction arguments in making [our] determination.” Id. at 4. As we explain in a concurrently issued decision in IPR2025-00070, the parties have persuaded us that the correct construction of the ’872 patent claims’ recitation of “association” is the construction advanced and applied in the 70 Petition, not the narrower, possible construction addressed in this proceeding’s Petition. IPR2025-00070, Paper 28. Accordingly, we deny institution of inter partes review in this proceeding.” slip op. at 2
- Claim Construction › Intrinsic evidence (Phillips canons) › Plain and ordinary meaning to a POSITATerm construed petitioner constructionDecided for petitioner
“As we explain in a concurrently issued decision in IPR2025-00070, the parties have persuaded us that the correct construction of the ’872 patent claims’ recitation of “association” is the construction advanced and applied in the 70 Petition, not the narrower, possible construction addressed in this proceeding’s Petition. IPR2025-00070, Paper 28. Accordingly, we deny institution of inter partes review in this proceeding.” slip op. at 3
- PTAB / AIA Trials › Institution threshold (reasonable likelihood / more likely than not)Institution denied
“As we explain in a concurrently issued decision in IPR2025-00070, the parties have persuaded us that the correct construction of the ’872 patent claims’ recitation of “association” is the construction advanced and applied in the 70 Petition, not the narrower, possible construction addressed in this proceeding’s Petition. IPR2025-00070, Paper 28. Accordingly, we deny institution of inter partes review in this proceeding. II. ORDER It is: ORDERED that, pursuant to 35 U.S.C. § 314(a), the petitioned institution of inter partes review of the ’872 patent is denied.” slip op. at 3
Claim constructionPatents in suitUS 9,954,872 - PTAB · Aug 13, 2025 · IPR2025-00070 · APJ Neil T Powell · IPR · Remand
The Board instituted inter partes review of claims 1–21 on all asserted grounds, finding a reasonable likelihood that at least claim 1 is unpatentable over Capalik.
RulingsRemand decision- Director reviewOther
“Patent Owner then filed a Request for Director Review, arguing that Petitioner did not need two petitions to challenge the ’872 patent’s claims. Paper 19. Acting Director Coke Morgan Stewart granted Director Review. Paper 25 (“Director Review Decision” or “DR Dec.”); IPR2025-00068, Paper 25. The Director Review Decision vacated this proceeding’s Institution Decision and the 68 Institution Decision, remanding “to the Board panel to Authorizing the parties to brief “how the Board should construe the term ‘association,’” the Director Review Decision instructed us to “consider the parties’ claim construction arguments in making [our] determination.” Id.” slip op. at 2
- Claim Construction › Intrinsic evidence (Phillips canons) › Plain and ordinary meaning to a POSITATerm construed board ownDecided for petitioner
“Thus, the parties agree on the correct construction of “association.” And the parties persuade us to adopt their construction: “association” does not require any classification as authorized or unauthorized. Pet. 4–8; PO Remand Br. 1–3; Pet. Resp. Br. 1–2. This construction of “association” is the one applied in this Petition’s claim challenges, which comports with (1) our earlier determination that the Petition demonstrates a reasonable likelihood of prevailing and (2) Petitioner’s preference for this Petition over the 68 Petition. Pet. 4–8, 13–74; Dec. 10–22; Paper 3, 2; Pet. Resp. Br. 2, 5.” slip op. at 13
- BurdenDecided for petitioner
“D. The Merits of Petitioner’s Claim Challenges In our Institution Decision, after weighing the parties’ arguments and evidence, we determined that the Petition demonstrates a reasonable likelihood of establishing unpatentability of at least claim 1 of the ’872 patent as obvious over Capalik. E.g., Dec. 16–22. Based on all of the arguments and evidence currently of record, we remain persuaded that the Petition demonstrates a reasonable likelihood of prevailing on at least claim 1 of the ’872 patent. Indeed, as discussed above in Section II.A, the parties’ agreement on the correct construction of “association” reinforces this determination. III. CONCLUSION In view of the foregoing, having determined that Petitioner has demonstrated a reasonable likelihood of establishing at least claim 1 of the ’872 patent is unpatentable, we institute trial as to all challenged claims on all grounds stated in the Petition IV. ORDER It is: ORDERED that inter partes review of claims 1–21 of the ’872 patent is instituted on all grounds presented in the Petition; and” slip op. at 18
- PTAB / AIA Trials › Discretionary denial › §325(d) same art / argumentsDecided for petitioner
“institution under § 325(d). Prior to our Institution Decision, Patent Owner did not argue we should deny under § 325(d). See generally Prelim. Resp.; Pet. Resp. Br. 4. Patent Owner first raised § 325(d) while its Request for Director Review was pending, emailing the Office with a request to brief § 325(d) in view of Ecto World. Ex. 3101, 4–5. The Office did not grant that request. Id. at 1. Nor did the Director Review Decision authorize Patent Owner to brief § 325(d). It only authorized Patent Owner “to file a ten-page brief explaining how the Board should construe the term ‘association.’” DR Dec. 4. In sum, Patent Owner’s unauthorized § 325(d) arguments are waived. Moreover, even if Patent Owner had not waived its § 325(d) arguments, we find Petitioner’s § 325(d) arguments more persuasive.” slip op. at 16
Claim constructionDiscretionary denialPatents in suitUS 9,954,872
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.