- Solus Advanced Materials Co, Ltd. v. SK Nexilis Co., Ltd.Institution deniedPTAB · Apr 22, 2025 · IPR2024-01460 · APJ Jon B Tornquist · IPR · Institution
The Board denied institution of review of claims 1–11 because the Fintiv factors, including the early trial date and close merits case, favored discretionary denial.
RulingsInstitution decision- PTAB / AIA Trials › Institution threshold (reasonable likelihood / more likely than not)Institution denied fintivInstitution denied
“whether to institute an inter partes review. Applying the standard set forth in 35 U.S.C. § 314(a), we may not institute an inter partes review 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.” Institution of inter partes review, however, is discretionary. See Harmonic Inc. v. Avid Tech., Inc., 815 F.3d 1356, 1367 (Fed. Cir. 2016) (“[T]he PTO is permitted, but never compelled, to institute an IPR proceeding.”). For the reasons stated below, we exercise our discretion not to institute an inter partes review. A. Real Parties-in-Interest” slip op. at 2
- PTAB / AIA Trials › Discretionary denial › Fintiv (parallel litigation)Institution denied fintivDenied
“Board’s projected statutory deadline to issue a final written decision. Fintiv, Paper 11 at 9. “If the court’s trial date is at or around the same time as the projected statutory deadline . . . the decision whether to institute will likely implicate other factors.” Id. Conversely, “[i]f the court’s trial date is earlier than the projected statutory deadline,” this has generally weighed “in favor of exercising authority to deny institution.” Id.” slip op. at 15
- PTAB / AIA Trials › Discretionary denial › §325(d) same art / argumentsNot reached
“Petition under 35 U.S.C. § 325(d) because the same or substantially the same art and arguments were before the Examiner during prosecution and Petitioner’s has not demonstrated that the Examiner erred in a material manner when allowing the claims. Pet. 17–18. Given our discretionary denial of the Petition in view of the Fintiv factors, we do not address Petitioner’s further arguments with respect to § 325(d).” slip op. at 32
- Skill levelSkill level petitioner adoptedDecided for petitioner
“Patent Owner applies Petitioner’s recited level of ordinary skill in the art for purposes of its Preliminary Response. Prelim. Resp. 4. Upon review of the parties’ arguments and the prior art of record, we adopt Petitioner’s unopposed definition of the ordinarily skilled artisan for purposes of this decision as it appears consistent with the disclosures of the ’090 patent and the prior art of record. C. Claim Construction” slip op. at 9
§ 103 obviousnessDiscretionary denialcites Phillips · KSR · GrahamPatents in suitUS 10,480,090 - PTAB · Mar 27, 2025 · IPR2025-00004 · APJ Georgianna W Braden · IPR · Institution
The Board instituted IPR on claims 1–7, 9, 11–17, and 19, finding a reasonable likelihood of success on the asserted obviousness challenges.
RulingsInstitution decision- PTAB / AIA Trials › Institution threshold (reasonable likelihood / more likely than not)InstitutedInstituted
“In an [inter partes review], the petitioner has the burden from the onset to show with particularity why the patent it challenges is unpatentable.” Harmonic Inc. v. Avid Tech., Inc., 815 F.3d 1356, 1363 (Fed. Cir. 2016) (citing 35 U.S.C. § 312(a)(3)); see also Intelligent Bio-Sys., 821 F.3d at 1369. This burden of persuasion never shifts to Patent Owner. See Dynamic Drinkware, LLC v. Nat’l Graphics, Inc., 800 F.3d 1375, 1378 (Fed. Cir. 2015) (discussing the burden of proof in inter partes review). Therefore, to prevail in an inter partes review, Petitioner must explain how 6 At this stage of the proceeding, Patent Owner has not presented objective evidence of non-obviousness. the proposed combination of prior art would have rendered the challenged claims unpatentable. At this preliminary stage, we determine whether the information presented in the Petition shows there is a reasonable likelihood that Petitioner would prevail in establishing that at least one of the challenged claims would have been obvious over the proposed combinations of prior art. slip op. at 10
- Skill levelSkill level petitioner adoptedDecided for petitioner
“Here, Petitioner asserts a person of ordinary skill in the art at the time of the invention of the ’313 patent would have “had a bachelor’s degree in computer science, computer engineering, electrical engineering, or a related field, and 2–3 years of practical engineering experience relating to information security systems that employ cryptographic keys to encrypt/decrypt digital data.” Pet. 9 (citing Ex. 1003 ¶¶ 1–20, 37–41). Mr. Wechselberger supports Petitioner’s position and further testifies that “[a]dditional education could substitute for professional experience, or significant experience in the field could substitute for formal education.” Ex. 1003 ¶ 40. Patent Owner does not assert a different level of skill in the art at the time of the alleged invention and does not dispute Petitioner’s proposed level of skill. Prelim. Resp. 6. For the purposes of this Decision, we adopt Petitioner’s level of ordinary skill in the art because it appears consistent with the problems addressed in the ’313 Patent and the prior art of record.” slip op. at 11
- Expert testimonyPetitioner expert creditedDecided for petitioner
“We also are persuaded based on the current record that Suzuki’s teachings bolster Peterka’s teaching of this limitation. See Ex. 1006 ¶¶ 33, 36, 43–48, 59, 72–77, 80–81, Figs. 4–6. Moreover, we are persuaded that a person of ordinary skill in the art at the critical time would have had reason to apply the teachings of Suzuki to Peterka. Specifically, we credit the testimony of Mr. Wechselberger, who testifies that (1) Peterka and Suzuki are in the same field of art and (2) both references disclose “periodically” changing keys that protect distributed content. Ex. 1003 ¶ 154 (citing Ex. 1006 ¶¶ 3, 12; Ex. 1005 ¶¶ 82, 110). Mr. Wechselberger explains that an ordinarily skilled artisan would have recognized the importance of identifiers “to differentiate amongst keys, and that providing unique values (such as key numbers) to keys would ensure that the system does not confuse keys.” Id. ¶ 153. According to Mr. Wechselberger, an ordinarily skilled artisan “would have had reasons to implement Peterka’s client in view of Suzuki to acquire and use ‘key information’ about a next key—its ‘remaining validity time’ and ‘key number’—at a set time before the expiration of the current key, and thereby facilitate timely key acquisition and use.” Id. ¶ 155 (citing Ex. 1006 ¶¶ 76–77, 80–81, 43–48) (emphasis added). At this stage of the proceeding, and crediting the testimony of Mr. Wechselberger, we are persuaded that the combined teachings of Peterka and Suzuki would have allowed a person of ordinary skill in the art “to ‘eliminat[e] the confirmation delay’ during key changes, and realize Peterka’s embodiment where “each client keeps track of the keys and their expiration times and actively requests new keys before the current keys expire so as to avoid service interruptions.” See Ex. 1006 ¶ 11; Ex. 1005 ¶ 105.” slip op. at 30
- Claim Construction › Threshold & procedure › Whether a term needs construction (O2 Micro)No construction neededNot reached
“Petitioner contends “[n]o claim term requires that the Board adopt an exact outer boundary construction because the prior art relied upon herein meets the claims under any plausible interpretation as detailed [in the Petition.]” Pet. 10. Patent Owner asserts that “[t]he Petition does not raise a dispute as to any claim construction issues” and “Patent Owner does not believe the Board need resolve any claim construction issues at this stage.” Prelim. Resp. 6 (citing Pet. 9–10). Construction is needed only for those terms “that are in controversy, and only to the extent necessary to resolve the controversy.” 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)). There are no claim terms in controversy at this stage of the proceeding. Consequently, we need not construe any terms for our analysis.” slip op. at 9
Claim construction§ 103 obviousnesscites Phillips · KSR · GrahamPatents in suitUS 11,122,313 - PTAB · Mar 27, 2025 · IPR2025-00003 · APJ Norman H Beamer · IPR · Institution
The Board instituted IPR on claims 1–8, 10, 12, 14, and 16–20 for all petitioned grounds, finding a reasonable likelihood of prevailing on at least one claim.
RulingsInstitution decision- PTAB / AIA Trials › Institution threshold (reasonable likelihood / more likely than not)InstitutedInstituted
“The standard for instituting an inter partes review is set forth in 35 U.S.C. § 314(a), which provides that an inter partes review may not be instituted unless the information presented in the Petition and any preliminary response 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.” For the reasons explained below, we determine that Petitioner has established a reasonable likelihood that it would prevail with respect to at least one challenged claim. Accordingly, we institute an inter partes review as to the challenged claims and grounds raised in the Petition.” slip op. at 2
- Skill levelSkill level petitioner adoptedOther
“Petitioner’s expert contends that person of ordinary skill in the art (POSITA): [W]ould have had a bachelor’s degree in computer science, computer engineering, electrical engineering, or a related field, and 2–3 years of practical engineering experience relating to information security systems that employ cryptographic keys to encrypt/decrypt digital data. Additional education could substitute for professional experience, or significant experience in the field could substitute for formal education. Ex. 1003 ¶ 41. Patent Owner does not dispute the Petitioner’s proposal at this time. Prelim. Resp. 8. Based on a review of the record, we adopt Petitioner’s proposed level of ordinary skill in the art because it is consistent with the evidence of record, including the asserted prior art and ’178 patent specification. Okajima v. Bourdeau, 261 F.3d 1350, 1355 (Fed. Cir. 2001).” slip op. at 10
- Claim Construction › Intrinsic evidence (Phillips canons) › Plain and ordinary meaning to a POSITATerm construed board ownDecided for petitioner
“the special case of key changes requested for security reasons outside of any fixed duration lifespan. Ex. 1001, 10:40–42. Considering, as we must, the disclosure of the ’178 patent as a whole, the scope of the disclosure is directed broadly to key rotation in general, whether due to scheduled key expiration times or otherwise. Id. at code (57), Fig. 3, 1:63–65, 2:23–25, 3:26–28, 9:47–49; see also Superguide Corp. v. DirecTV Enter., Inc., 358 F.3d 870, 875 (Fed. Cir. 2004) (“Though understanding the claim language may be aided by explanations contained in the written description, it is important not to import into a claim limitations that are not part of the claim. For example, a particular embodiment appearing in the written description may not be read into a claim when the claim language is broader than the embodiment”).” slip op. at 21
- Obviousness (§103) › Motivation to combine / reasonable expectation of successMotivation foundOther
“combine the teachings of Peterka, Suzuki, and Bocharov. Pet. 51–53, 57– 59, 66–67. Petitioner argues that Suzuki, like Peterka, discloses clients acquiring keys for multiple media segments, and provides implementation details, not disclosed in Peterka, regarding how to keep track of keys and their expiration times, and how to determine when a new key is required. Pet. 51–52 (citing Ex. 1003 ¶¶ 161–164). Petitioner argues that, given that Peterka and Suzuki are in the same field of art, one of ordinary skill would have been motivated to use the specific details of Suzuki in implementing the disclosure of Peterka. Id. at 53, 66 (citing Ex. 1003 ¶¶ 165–167, 202–204). Petitioner also argues that Peterka indicates that video content can be streamed using various protocols and bit rates, but does not provide implementation details. Pet. 57–59, 66–67 (citing Ex. 1003 ¶¶ 179–184, 204). However, argues Petitioner, one of ordinary skill in the art would have had reason to use the manifest files of Bocharov to provide the necessary information to handle different protocols and bit rates. Id. Petitioner argues that one of ordinary skill in the art would have been so motivated because implementing Peterka’s system to use Bocharov’s manifests would have provided an effective solution for allowing clients to switch between multiple versions of a media program having different encodings/qualities/bit rates. Id. Patent Owner does not specifically address the merits of combining Peterka, Suzuki, and Bocharov. See generally Prelim. Resp. Nonetheless the burden remains on Petitioner to demonstrate unpatentability. See Dynamic Drinkware, LLC v. Nat’l Graphics, Inc., 800 F.3d 1375, 1378 (Fed. Cir. 2015). For purposes of this Decision, we determine that Petitioner has provided sufficiently articulated reasoning with rational underpinnings for the proffered combined teachings of Peterka, Suzuki, and Bocharov.” slip op. at 29
Claim construction§ 103 obviousnesscites KSR · GrahamPatents in suitUS 9,313,178 - Innoscience (Zhuhai) Technology Company, Ltd. / Innoscience America, Inc. v. Efficient Power Conversion CorporationNo claims unpatentablePTAB · Mar 25, 2025 · IPR2023-01382 · APJ Kimberly Mcgraw · IPR · Final written decision
Claims 1–3 were not shown unpatentable under any of five § 103 grounds because Petitioner failed to establish sufficient motivation to modify or combine the prior art.
RulingsFinal written decision- BurdenNot shown unpatentable
“A petition must identify “with particularity . . . the evidence that supports the grounds for the challenge to each claim.” 35 U.S.C. § 312(a)(3) Here, Petitioner merely provides general assertions about multiple references, without clearly identifying how, or why a POSITA would have been motivated, to modify the processes disclosed in those references to arrive at the claimed invention. Thus, the Petition does not state with particularity that Saxler’s particular technique for etching is to be used instead of Beach’s etching step when substituting Beach’s self-aligned process for Saxler’s two mask process. Nor does the Petitioner provide a sufficient reason, absent hindsight, why a POSITA would have been motivated to combine the references to result in a process that forms Saxler’s Modified Figure 1A. Thus, for these additional reasons, Petitioner has not shown by a preponderance of the evidence that claim 1 would have been obvious over Saxler, Beach, and Shenoy.” slip op. at 34
- Skill levelSkill level petitioner adoptedDecided for petitioner
“Both parties agree that the differences between the definitions do not impact the analysis. Resp. 11; Reply 2. In light of the record before us, and for purposes of this Decision, we adopt Petitioner’s proposal regarding the level of ordinary skill in the art. Based on our review of the ’347 patent and the prior art of record, we determine that the definition offered by Petitioner comports with the qualifications a person would have needed to understand and implement the teachings of the ’347 patent and the prior art. We also note that our Decision would be the same under either parties’ definition.” slip op. at 13
- Expert testimonyOther
“Petitioner’s expert, Dr. Shealy states that he understands paragraph 52 to mean that it is “fair game to pull the recess out of any of those figures [Figures 1A through 6].” Ex. 2004, 39:12–21. Dr. Shealy, however, also clarifies that “[a]s I said before, I think you could take all the embodiments and bring in which ones you want, depending on what you’re trying to accomplish.” Ex. 2004, 40:24–41:1. During the hearing, Petitioner admitted that Dr. Shealy’s “statement to modify the reference depending on what you're trying to accomplish” means that “a POSITA may modify with reason to do so. A POSITA would have removed Saxler’s recess to obtain the benefits of enhancement-mode.” Tr. 19:19–25. Again, the Petition does not provide a reason why a POSITA would have removed Saxler’s gate recess.” slip op. at 28
- Obviousness (§103) › Motivation to combine / reasonable expectation of successMotivation not foundNot shown unpatentableNot shown unpatentable
“remove the recess in Saxler Figure 1A to arrive at the allegedly enhancement mode transistor of Modified Figure 1A. Contrary to Petitioner’s assertions in its Reply and at the hearing, the Petition makes no argument that a POSITA would have removed the recess from Saxler Figure 1A to realize the benefits of an enhancement mode transistor. See Reply 4–5; Pet. 24–68. Rather, the Petition merely asserts that a POSITA would have understood that the gate recess of Figure 1A is optional without providing any persuasive reason why a POSITA would have removed the gate recess but retained the sloped sidewalls of Figure 1A. Pet. 25, 40, 45. For example, Petitioner asserts that Saxler’s gate contact may be “recessed or non-recessed” and that when the gate recess shown in Figure 1A is not utilized, Saxler would have the structure of Saxler Modified Figure 1A. Pet. 25 (citing Ex. 1003 ¶ 81; Ex. 1007 ¶ 52, 66); see also Pet. 40, 45 (citing Ex. 1007 ¶ 52). Neither of these paragraphs provide sufficient motivation to a POSITA to remove the gate recess from Saxler Figure 1A. Saxler paragraph 52 states: Exemplary devices according to some embodiments of the present invention are schematically illustrated in FIGS. 1A through 6. Thus, while embodiments of the present invention are described herein with reference to a recessed gate structure or a non-recessed gate structure, other embodiments of the present invention may include or not include a gate recess. Accordingly, embodiments of the present invention should not be construed as limited to the particular exemplary embodiments described herein but may include any suitable structure having a cap layer and/or passivation layer as described herein. Ex. 1007 ¶ 52. Petitioner’s expert, Dr. Shealy states that he understands paragraph 52 to mean that it is “fair game to pull the recess out of any of those figures [Figures 1A through 6].” Ex. 2004, 39:12–21. Dr. Shealy, however, also clarifies that “[a]s I said before, I think you could take all the embodiments and bring in which ones you want, depending on what you’re trying to accomplish.” Ex. 2004, 40:24–41:1. During the hearing, Petitioner admitted that Dr. Shealy’s “statement to modify the reference depending on what you're trying to accomplish” means that “a POSITA may modify with reason to do so. A POSITA would have removed Saxler’s recess to obtain the benefits of enhancement-mode.” Tr. 19:19–25. Again, the Petition does not provide a reason why a POSITA would have removed Saxler’s gate recess.” slip op. at 28
Patent outcomesUS 9,748,347 not shown unpatentable§ 103 obviousnesscites Phillips · KSRPatents in suitUS 9,748,347 - Innoscience (Zhuhai) Technology Company, Ltd. / Innoscience America, Inc. v. Efficient Power Conversion CorporationAll claims unpatentablePTAB · Mar 25, 2025 · IPR2023-01384 · APJ Jeffrey W Abraham · IPR · Final written decision
Claims 1–7 are unpatentable as obvious over Yoshida and Saxler; the Board did not reach the alternative grounds.
RulingsFinal written decision- Skill levelOther
“In light of the record before us, we determine that we do not need to reach a specific finding regarding the level of ordinary skill in the art. See Okajima v. Bourdeau, 261 F.3d 1350, 1355 (Fed. Cir. 2001) (explaining that specific findings regarding ordinary skill level are not required “where the prior art itself reflects an appropriate level and a need for testimony is not shown”) (quoting Litton Indus. Prods., Inc. v. Solid State Sys. Corp., 755 F.2d 158, 163 (Fed. Cir. 1985)).” slip op. at 13
- Claim Construction › Threshold & procedure › Whether a term needs construction (O2 Micro)No construction neededDecided for petitioner
“In the Institution Decision, we declined to adopt Petitioner’s proposed construction of the “side surfaces” limitation and determined that it was not necessary to further construe this term because “[t]he parties do not dispute that the language ‘side surfaces extending horizontally’ encompasses a gate material with sloped side surfaces as depicted in Figure 5 of the ’335 patent.” Inst. Dec. 11–16 (citing Nidec Motor Corp. v. Zhongshan Broad Ocean Motor Co., 868 F.3d 1013, 1017 (Fed. Cir. 2017); Vivid Techs., Inc. v. Am. Sci. & Eng’g, Inc., 200 F.3d 795, 803 (Fed. Cir. 1999) (“[O]nly those terms need be construed that are in controversy, and only to the extent necessary to resolve the controversy.”)). We invited the parties to address this limitation further during the course of this trial, but neither party provided additional evidence or argument regarding the “side surfaces” limitation. Inst. Dec. 16; see generally PO Resp.; Reply; Sur-reply. Accordingly, we maintain our determination from the Institution Decision that we do not need to construe the “side surfaces” limitation. Inst. Dec. 15– 16.” slip op. at 14
- Claim Construction › Intrinsic evidence (Phillips canons) › Plain and ordinary meaning to a POSITATerm construed petitioner constructionDecided for petitioner
“This evidence, particularly the language in the ’335 patent itself, undermines Patent Owner’s argument that “[t]he process for forming gate ledges using separate masks instead of the self-aligned process disclosed in the ’335 patent cannot produce ledges that are ‘substantially symmetric.’” PO Resp. 39 (emphasis added); see also PO Resp. 42–43 (arguing that a gate structure with ledges having substantially equal widths is “not achievable” without using a single photo-mask process). We have considered the evidence presented by Patent Owner and Dr. Schubert in support of Patent Owner’s arguments. PO Resp. 38–43; Ex. 2005 ¶¶ 49–51. We, however, are unable to discern sufficient evidence supporting a conclusion that using separate masks cannot produce ledges that are substantially symmetric, particularly when the ’335 patent suggests otherwise. See Ex. 1001, 4:60– 63 (referring only to the “possibility of misalignment”). Even if, as Patent Owner and Dr. Schubert contend, misalignment “naturally” occurs when using a two-mask process, that does not foreclose the possibility that the” slip op. at 18
- Obviousness (§103) › Motivation to combine / reasonable expectation of success › Teaching awayTeaching away not foundDecided for petitioner
“It is well settled that “[a] reference does not teach away . . . if it merely expresses a general preference for an alternative invention but does not ‘criticize, discredit or otherwise discourage’ investigation into the invention claimed.” DePuy Spine, Inc. v. Medtronic Sofamor Danek, Inc., 567 F.3d 1314, 1327 (Fed. Cir. 2009) (quoting In re Fulton, 391 F.3d 1195, 1201 (Fed. Cir. 2004)). Furthermore, “teaching that a composition may be optimal or standard does not criticize, discredit, or otherwise discourage” slip op. at 31
Patent outcomesUS 10,312,335 unpatentableClaim construction§ 103 obviousnesscites Phillips · KSR · GrahamPatents in suitUS 10,312,335 - Innoscience (Zhuhai) Technology Company, Ltd. / Innoscience America, Inc. v. Efficient Power Conversion CorporationNo claims unpatentablePTAB · Mar 18, 2025 · IPR2023-01383 · APJ Kimberly Mcgraw · IPR · Final written decision
Claims 1–5 were not shown unpatentable because Petitioner did not sufficiently establish a reason to modify the asserted prior art.
RulingsFinal written decision- Expert testimonyPatent owner expert creditedDecided for patent owner
“We disagree with Petitioner’s argument because it fails to address Dr. Schubert’s academic and other experience with GaN transistors. Dr. Schubert is currently a tenured full professor in the Department of Electrical Computer, and Systems Engineering at Rensselaer Polytechnic Institute and was previously a tenured full professor in the Department of Electrical and Computer Engineering at Boston University. Ex. 2001, 129. Additionally, Dr. Schubert was the director of Boston University’s Semiconductor Devices Research Laboratory. Ex. 2001, 129. Dr. Schubert persuasively explains that his general expertise is in the field of electrical engineering and applied physics, including semiconductors, processing, and devices and his specific expertise is in the field of semiconductor materials (such as GaN), semiconductor devices, semiconductor integrated circuits, ohmic contacts, Schottky contacts, HEMTs, and optoelectronic devices such as light-emitting diodes (LEDs). Ex. 2001 ¶ 11, App’x A pp.129–137. His experience includes “the design, growth, fabrication, and testing of semiconductor devices as well as the employment of these devices in a variety of applications” and he is “familiar with both the design of such transistors [HEMTs] and the manufacturing processes used for FETs. Ex. 2001 ¶ 11, App’x A, pp. 129–137. He is an author or co-author of numerous text books and articles, and co-inventor of numerous patents, including those dealing with HEMT transistors and GaN devices. Ex. 2001 ¶ 13, App’x A, pp. 129–137. Petitioner fails to present any persuasive argument or evidence that Dr. Schubert’s extensive education and experience regarding GaN transistors is insufficient or lacking such that his testimony should be given little weight. Finally, we disagree with Petitioner’s additional argument that that its expert’s testimony (Dr. Shealy) should be given more weight than Patent Owner’s expert’s testimony (Dr. Schubert) because “[u]nlike Dr. Schubert, Dr. Shealy is one of the pioneer scientists in the field of GaN transistors.” Reply 34 (stating that Dr. Shealy’s research lab built the first GaN HEMT device on silicon in 1999 and citing Ex. 2002, 87:19–238). Obviousness is determined through the lens of a “person of ordinary skill in the art,” not through the lens of a person with extraordinary skill or a pioneer in the field. Given Dr. Schubert’s extensive relevant education and experience, Petitioner does not persuasively explain why Dr. Shealy’s testimony on any specific topic, or his testimony in general, should be given more weight than Dr. Schubert’s.” slip op. at 16
- Skill levelSkill level petitioner adoptedDecided for petitioner
“understanding of a person of ordinary skill in the art (sometimes abbreviated herein as “POSITA”). Graham, , 383 U.S. at 17–18. Petitioner argued that a person of ordinary skill in the art would have had a “at least a four-year degree in electrical engineering, chemical engineering, physics, or material science or a closely related field and at least two years of experience in semiconductor device design or fabrication, including the processing of semiconductor materials, analysis of device operation, or the development of new device topologies. Additional education could substitute for professional experience and vice versa.” Pet. 11 (citing Ex 1003 ¶ 69). Patent Owner did not dispute this proposed definition prior to institution. See generally Prelim. Resp. In our Decision on Institution, we adopted Petitioner’s proposal. After institution, Patent Owner asserted a slightly different definition of a POSITA, namely someone who “would have possessed at least a four-year degree in electrical engineering, physics, material science, or a closely related field, and three years of professional work experience in the epitaxial growth, design, and fabrication of semiconductor electronic devices, including those of GaN.” Resp. 17. Relevant graduate education could substitute for the professional work experience. Id. Upon review of the full record, we see no reason to modify, and we thus maintain, the definition of a POSITA applied in our Decision on Institution. We also determine that our decision would be the same under either of the parties’ proposed definitions.” slip op. at 14
- Claim Construction › Threshold & procedure › Whether a term needs construction (O2 Micro)Not reached
“During the proceeding, the parties also dispute the proper construction of “etching away the doped GaN layer, except a portion of the doped GaN layer beneath the gate contact” as recited in step [1e4] and provided briefing on this issue. Papers 35, 36, 37, 38. Because, as explained below, our determination rests upon Petitioner’s failure to show a sufficient reason to modify the asserted art, which is not dependent upon any particular claim construction, we need not, and do not, address these claim construction issues. See Nidec Motor Corp. v. Zhongshan Broad Ocean Motor Co., 868 F.3d 1013, 1017 (Fed. Cir. 2017) (citing Vivid Techs., Inc. v. Am. Sci. & Eng’g, Inc., 200 F.3d 795, 803 (Fed. Cir. 1999)) (holding that only claim terms in controversy need to be construed, and only to the extent necessary to resolve the controversy).” slip op. at 13
- ExcludeDenied
“III. PETITIONER’S MOTION TO EXCLUDE EXHIBIT 2008 Petitioner filed a Motion to Exclude (Paper 25, “Mot.”) Exhibit 2008, which is a hearing transcript from the parallel ITC investigation. Mot. 1. Because we do not rely upon Exhibit 2008 in our Decision, we dismiss Petitioner’s motion as moot.” slip op. at 47
Patent outcomesUS 8,404,508 not shown unpatentableClaim construction§ 103 obviousnesscites Phillips · KSRPatents in suitUS 8,404,508 - Innoscience (Zhuhai) Technology Company, Ltd / Innoscience America, Inc. v. Efficient Power Conversion CorporationAll claims unpatentablePTAB · Mar 18, 2025 · IPR2023-01381 · APJ Jon B Tornquist · IPR · Final written decision
Claims 1–3 and 7–9 are unpatentable as obvious over Uemoto and Smith; the motion to amend is granted, and proposed substitute claims 13 and 14 are not shown unpatentable.
RulingsFinal written decision- Skill levelSkill level petitioner adoptedDecided for petitioner
“In order to determine whether an invention would have been obvious at the time the application was filed, we consider the level of ordinary skill in the pertinent art. Graham, 383 U.S. at 17. In assessing the level of ordinary skill in the art, various factors may be considered, including the “type of problems encountered in the art; prior art solutions to those problems; rapidity with which innovations are made; sophistication of the technology; and educational level of active workers in the field.” In re GPAC, Inc., 57 F.3d 1573, 1579 (Fed. Cir. 1995) (quotation omitted). Petitioner contends a person of ordinary skill in the art “would have possessed at least a four-year degree in electrical engineering, chemical engineering, physics, or material science, or a closely related field, and at least two years of experience in semiconductor device design or fabrication, including the processing of semiconductor materials, analysis of device operation, or the development of new device topologies.” Pet. 5–6. Petitioner contends “[a]dditional education could substitute for professional experience and vice versa.” Id. at 6. Patent Owner contends that a person of ordinary skill in the art would have had “at least a four-year degree in electrical engineering, physics, material science, or a closely related field, and three years of professional work experience in the epitaxial growth, design, and fabrication of semiconductor electronic devices, including those of GaN.” PO Resp. 7 (citing Ex. 2009 ¶ 82). Upon review of the evidence of record and the parties’ arguments, we adopt Petitioner’s definition of the person of ordinary skill in the art as it is consistent with the prior art of record. See Okajima v. Bourdeau, 261 F.3d 1350, 1355 (Fed. Cir. 2001) (holding that the prior art itself can reflect the appropriate level of ordinary skill in the art). We note, however, that the conclusions reached in this Decision would be the same under either proposed definition of the ordinarily skilled artisan. See Ex. 2009 ¶ 83 (Dr. Schubert testifying that his opinions would be the same under either proposed definition); Ex. 1033 ¶ 9 (Dr. Shealy testifying that the differences in proposed definitions of the ordinarily skilled artisan “would not change the outcome of the invalidity analysis in any material manner”); PO Resp. 7; Pet. Reply 1.” slip op. at 9
- Claim Construction › Intrinsic evidence (Phillips canons) › Plain and ordinary meaning to a POSITATerm construed board ownDecided for patent owner
“compensated GaN layer above the barrier layer, and a gate contact above the compensated GaN layer.” Ex. 1001, 5:12–18. Petitioner contends the term “compensated” indicates that the step of compensating the GaN layer has already occurred, such that the term “compensated GaN layer” should be construed as a “‘[d]oped GaN layer formed with a step to passivate its impurities’ which is a ‘product-by-process’ limitation.”5 Pet. 12–14. And, because compensation with hydrogen was the “critical step” distinguishing the claims from the prior art, and because hydrogenation in as-grown III-nitride materials had been well known for over a decade by 2009, Petitioner contends “compensated” “cannot be interpreted as mere hydrogen presence in as-grown material, a well-known property of doped GaN.” Id. at 15. Patent Owner contends “compensated GaN material” should be construed as “a semiconductor GaN gate material in which one type of impurity (for example, donor) cancels the electrical effects of the other type of impurity (for example, acceptor).” PO Resp. 11 (citing Ex. 2009 ¶ 92) (emphasis added). Patent Owner contends this construction is consistent with the IEEE dictionary, which defines “compensated semiconductor” as 5 Given that product-by-process steps in a device claim are not entitled to patentable weight, Petitioner contends “the prior art only need show a material with passivated impurities to show unpatentability, not the step to achieve it.” Pet. 15–16. “[a] semiconductor in which one type of impurity or imperfection (for example, donor) partially cancels the electric effects of the other type of impurity or imperfection (for example, acceptor).” PO Resp. 14 (quoting Ex. 2004). Patent Owner contends its construction is also consistent with the written description of the ’294 patent, which explains that a compensated GaN material is part of the gate and includes a p-type impurity that imparts an electrical effect (i.e., conductivity), as well as a second impurity, e.g., hydrogen, that partially cancels the electrical effect of the p-type impurity, rendering the layer semi-insulating. Id. at 14–15 (citing Ex. 1001, 3:10–13, 3:43–45). On this record, we construe “compensated GaN layer” as “a GaN layer in which one type of impurity (for example, donor) partially cancels the electric effects of the other type of impurity (for example, acceptor).” This is consistent with the disclosures of the ’294 patent, the IEEE dictionary definition, and the construction ultimately adopted by the ITC. Ex. 2004, 3; Ex. 1049, 16–17 (ITC construing “compensated GaN layer” to mean “a GaN layer in which one type of impurity partially cancels the electrical effects of another type of impurity”); Ex. 1001, 3:43–45 (explaining that the compensated GaN layer of the ’294 patent is formed through the “passivation of a p-type impurity using hydrogen”). For the reasons set forth below, however, we decline to construe “compensated GaN layer” as a product-by-process claim term (as asserted by Petitioner), or to limit the compensated GaN layer to a gate material (as asserted by Patent Owner).” slip op. at 11
- Claim Construction › Intrinsic evidence (Phillips canons) › Specification disavowal / 'present invention' languageDisclaimer not foundDecided for petitioner
“There are two exceptions to the general rule that we apply the ordinary and customary meaning of a claim term: (1) when a patentee sets out a definition and acts as his own lexicographer, or (2) when the patentee disavows the full scope of a claim term either in the specification or during prosecution. See Thorner, 669 F.3d at 1365. The standards for lexicography and disclaimer, however, are “exacting.” Id. at 1366. There is no argument that the patentees acted as their own lexicographer to redefine the term “compensated GaN layer.” With respect to disavowal, a “patentee may demonstrate intent to deviate from the ordinary and accustomed meaning of a claim term by including in the specification expressions of manifest exclusion or restriction, representing a clear disavowal of claim scope.” Thorner, 669 F.3d at 1366 (quoting Teleflex, Inc. v. Ficosa N. Am. Corp., 299 F.3d 1313, 1325 (Fed. Cir. 2002)). As noted by Patent Owner, the title of the ’294 patent is, in part, “Compensated Gate MISFET” and much of the discussion of the ’294 patent is of a compensated GaN layer that is directly below the gate contact and above a barrier layer and operates in conjunction with the gate contact to control the on/off state of the transistor. PO Resp. 12–14. We are presented with insufficient argument or evidence to conclude, however, that these disclosures rise to the level of a disclaimer. For example, although the title of the ’294 patent is directed to a “Compensated Gate MISFET,” claim 1 is more broadly directed to “[a] column III Nitride transistor.” Ex. 1001, 5:12, code (54). Nor are we directed to an expression or statement of manifest exclusion in the ’294 patent that would serve to disclaim any “compensated GaN layer” that is not directly below the gate and/or that does not function in concert with the gate electrode to control the on/off state of the transistor. See Thorner, 669 F.3d at 1366. With respect to the stated goals of the invention, as noted by Patent Owner, one of the primary purposes of the compensated GaN layer of the ’294 patent is to reduce gate leakage and gate capacitance. Ex. 1001, 2:13– 19, 3:18–21 (“[U]sing a compensated semiconductor layer 38 leads to low gate leakage during device operation.”). We cannot use the goals of the invention, however, to rewrite the claims or insert terms that are not present. See Thorner, 669 F.3d at 1366. Moreover, the prior art of record indicates that a compensated GaN layer that is below the gate contact and above a barrier layer, but not part of the active gate structure, may also “decrease the leakage current between the gate and the drain.” Ex. 1006 ¶¶ 44 (“Even when a positive bias of 5 V or higher is applied to the gate electrode, no significant gate-leakage current is observed.”), 61. As such, evidence of record suggests that a person of ordinary skill in the art would have understood that one of the primary goals disclosed in the ’294 patent is achieved regardless of whether the compensated GaN layer is part of the gate, or simply in close vicinity to the gate. In view of the foregoing, we are not persuaded that the written description of the ’294 patent indicates that the “compensated GaN layer” must be part of the gate structure.” slip op. at 17
- Obviousness (§103) › Objective indicia / secondary considerations › NexusObjective indicia no nexusDecided for petitioner
“To be probative, Patent Owner must prove there is a nexus between the presented evidence and the merits of the claimed invention. See Demaco Corp. v. F. Von Langsdorff Licensing Ltd., 851 F.2d 1387, 1392 (Fed. Cir. 1988). A rebuttable presumption of nexus applies when the “patentee shows that the asserted evidence is tied to a specific product and that the product ‘is the invention disclosed and claimed.’” Fox Factory, Inc. v. SRAM, LLC, 944 F.3d 1366, 1373 (Fed. Cir. 2019) (quoting Demaco, 851 F.2d at 1392). “That is, presuming nexus is appropriate ‘when the patentee shows that the asserted objective evidence is tied to a specific product and that product embodies the claimed features, and is coextensive with them.’” Id. (quoting Polaris Indus., Inc. v. Arctic Cat, Inc., 882 F.3d 1056, 1072 (Fed. Cir. 2018)). If the praise is not limited to the features of the claimed invention, the patent owner may still prove nexus “by showing that the evidence of secondary considerations is the ‘direct result of the unique characteristics of the claimed invention.’” Id. at 1373–74 (quoting In re Huang, 100 F.3d 135, 140 (Fed. Cir. 1996)). Patent Owner contends that the compensated gate of the ’294 patent “was a breakthrough invention and resulted in the first commercially viable enhancement-mode GaN transistor.” PO Resp. 60 (citing Ex. 2009 ¶¶ 192– 193, 197; Ex. 2021). Patent Owner further contends that this achievement required the counter-intuitive use of a compensated gate material in the gate structure, and represented “a technological leap that laid the foundation for viable enhancement-mode GaN transistors.” Id. at 61–62. For this achievement, Patent Owner contends the inventor, Dr. Alex Lidow, received the 2015 SEMI Award. Id. at 60 (citing Ex. 2021). Upon review of Patent Owner’s evidence and the parties’ arguments, we find that Patent Owner’s objective indicia evidence is entitled to little, if any, weight. The evidence of praise relied upon by Patent Owner is not clearly linked to the claimed invention or any particular product having each of the claimed features of the ’294 patent. Ex. 2021. For example, the 2015 SEMI award was provided to Dr. Lidow “for commercialization of GaN power devices.” Id. An article explaining the award indicates that “high cost” previously “limited [the] commercial success” of GaN technologies, but Dr. Lidow was able to overcome these issues, “from resolving packaging limitations to establishing a low-cost supply chain,” “through persistence.” Id. This praise is not demonstrably linked to the claimed invention or any particular device, and does not mention the use of a compensated gate, or any other relevant feature recited in the claims. In view of the foregoing, we determine that Patent Owner’s objective evidence of non-obviousness is entitled to little, if any, weight.” slip op. at 20
Patent outcomesUS 8,350,294 unpatentableClaim construction§ 103 obviousness§ 112 disclosurecites KSR · GrahamPatents in suitUS 8,350,294 - Tiktok Inc. v. Ntech Properties, Inc.InstitutedPTAB · Mar 10, 2025 · IPR2024-01342 · APJ Scott Raevsky · IPR · Institution
The Board instituted IPR on claims 1–10 and all asserted grounds; it found a reasonable likelihood that claim 1 would have been obvious over Whitehead.
RulingsInstitution decision- PTAB / AIA Trials › Institution threshold (reasonable likelihood / more likely than not)InstitutedInstituted
“Based on our review of the preliminary record, Petitioner has demonstrated a reasonable likelihood of prevailing on at least one challenged claim. See 35 U.S.C. § 314(a). Accordingly, we institute an inter partes review on all challenged claims and all grounds asserted in the Petition. 37 C.F.R. § 42.108(a). However, Patent Owner calls into question some of Petitioner’s challenges.” slip op. at 2
- Obviousness (§103) › Motivation to combine / reasonable expectation of successMotivation not foundNot reached
“Petitioner contends that one motivation for combining would have been that Marcus ’904 includes additional disclosure of targeting media programming to specific users, which would lead to better customization of media programming by Cristofalo. Pet. 38 (citing Ex. 1002 ¶ 122). This assertion is vague and unexplained. Petitioner also asserts that Marcus ’904 provides “additional implementation details” on how final media programming is generated and formatted for display. Id. at 38–39 (citing Ex. 1002 ¶ 123). We fail to see, at this stage, how merely disclosing additional details would motivate a skilled artisan to combine references. If we were to agree with a proposed combination merely because one reference includes details another does not, this could “swallow all of patent law.” Cf. Alice Corp. Pty. Ltd. v. CLS Bank Int’l, 573 U.S. 208, 217 (2014) (addressing patent eligibility). Finally, Petitioner contends that combining Marcus ’904’s advertising sources would unlock new revenue sources for Cristofalo. Pet. 39 (citing Ex. 1002 ¶ 124). Patent Owner argues that this rationale appears to be superfluous, since Cristofalo already discloses targeting advertising to users. Prelim. Resp. 26 (“Cristofalo’s receiving system ‘already’ assembles the programming with advertisements.”); see Pet. 38 (referring to Cristofalo’s “targeted advertising”). We tend to agree at this stage. Thus, we question Petitioner’s rationale to combine Cristofalo with Marcus ’904.” slip op. at 16
- Skill levelSkill level petitioner adoptedDecided for petitioner
“The parties’ definitions are similar, although we observe that Patent Owner proposes that the person of ordinary skill would have a bachelor’s degree or professional experience, whereas Petitioner proposes that such a person would have both a degree and experience. See also Ex. 2001 ¶ 17 (Patent Owner’s declarant, Dr. Goodrich, stating that “I note that my definition of a POSITA is similar to that of Dr. Almeroth.”).” slip op. at 6
- Claim Construction › Threshold & procedure › Whether a term needs construction (O2 Micro)No construction neededOther
“Petitioner asserts that “[n]o express constructions are required.” Pet. 9. Patent Owner also proposes no express constructions. We agree that no claim terms require construction at this stage.” slip op. at 7
Claim construction§ 103 obviousnesscites AlicePatents in suitUS 8,886,753 - Tiktok Inc. v. Ntech Properties, Inc.InstitutedPTAB · Mar 10, 2025 · IPR2024-01340 · APJ Scott Raevsky · IPR · Institution
The Board instituted IPR on claims 1–24 and all asserted grounds, finding a reasonable likelihood of prevailing on at least one challenged claim.
RulingsInstitution decision- PTAB / AIA Trials › Institution threshold (reasonable likelihood / more likely than not)InstitutedInstituted
“Based on our review of the preliminary record, Petitioner has demonstrated a reasonable likelihood of prevailing on at least one challenged claim. See 35 U.S.C. § 314(a). Accordingly, we institute an inter partes review on all challenged claims and all grounds asserted in the Petition. 37 C.F.R. § 42.108(a). However, Patent Owner calls into question some of Petitioner’s challenges.” slip op. at 2
- Skill levelSkill level petitioner adoptedDecided for petitioner
“The parties’ definitions are similar, although we observe that Patent Owner proposes that the person of ordinary skill would have a bachelor’s degree or professional experience, whereas Petitioner proposes that such a person would have both a degree and experience. See also Ex. 2001 ¶ 17 (Patent Owner’s declarant, Dr. Goodrich, stating that “I note that my definition of a POSITA is similar to that of Dr. Almeroth.”). We adopt Petitioner’s assessment at this stage. Petitioner’s assessment is supported by the testimony of Dr. Almeroth and is consistent with the ’704 patent and the asserted prior art. However, our obviousness analysis would have been the same under either party’s assessment. See id. (“My opinions in this declaration would not change were I to adopt the definition of a POSITA offered by Dr. Almeroth.”).” slip op. at 7
- Claim Construction › Intrinsic evidence (Phillips canons) › Plain and ordinary meaning to a POSITAPlain and ordinary meaningDecided for patent owner
“On this record, we find Patent Owner’s references to Marcus156’s “exemplary methods” and systems to be non-limiting. Our reviewing court “has repeatedly cautioned against limiting the claimed invention to preferred embodiments or specific examples in the specification.” Williamson v. Citrix Online, LLC, 792 F.3d 1339, 1346–47 (Fed. Cir. 2015) (internal quotation omitted). “Absent disclaimer or lexicography, the plain meaning of the claim controls.” Toshiba Corp. v. Imation Corp., 681 F.3d 1358, 1369 (Fed. Cir. 2012). Patent Owner points us to no disclaimer or lexicography in the specification, including in Marcus156.” slip op. at 8
- Obviousness (§103) › Motivation to combine / reasonable expectation of success › HindsightMotivation not foundNot shown unpatentable
“Patent Owner attacks Petitioner’s “post-hoc rationalization for its proposed modification,” namely “more efficient processing or ‘simplifying processing and communications.’” Prelim. Resp. 26 (citing Pet. 18–19).14 Patent Owner asserts, in part, that Whitehead’s design already permits the “real time or near-real time” assembly of a custom media channel, so “it would be superfluous to include the same information again in the custom channel request.” Id. at 27–28 (citing, e.g., Ex. 1003, 4:40–44, 8:45–51, 11:45–49). At this stage, we tend to agree with Patent Owner. Petitioner acknowledges that “[m]ixing server 130 creates custom media channel 170 in real time or near real-time” yet asserts a POSITA would have modified Whitehead to speed up this process. See Pet. 18. If Whitehead already processes in real time or near real time, it is unclear why a skilled artisan would have sped up that process. Thus, Petitioner’s rationale does appear to be superfluous and hindsight-based at this stage.” slip op. at 17
Claim construction§ 103 obviousnessPatents in suitUS 8,145,704 - Tiktok Inc. v. Ntech Properties, Inc.Institution deniedPTAB · Feb 25, 2025 · IPR2024-01339 · APJ Terrence W Mcmillin · IPR · Institution
The Board denied institution on claims 1–20 because the petition did not show a reasonable likelihood of proving the claims obvious over the asserted prior-art combinations.
RulingsInstitution decision- PTAB / AIA Trials › Institution threshold (reasonable likelihood / more likely than not)Institution denied meritsInstitution denied
“review. 35 U.S.C. § 314; 37 C.F.R. § 42.4(a) (“The Board institutes the trial on behalf of the Director.”). The standard for institution is set forth in 35 U.S.C. § 314(a), which provides that inter partes review may not be instituted unless “there is a reasonable likelihood that the petitioner would prevail with respect to at least 1 of the claims challenged in the petition.” After considering the Petition and the Preliminary Response, as well as the evidence of record, we deny institution of inter partes review of the ’597 patent.3” slip op. at 2
- 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 at the time of the ’597 patent (“POSITA”) had at least a Bachelor of Science in electrical engineering, computer engineering, or similar fields and at least two years of practical experience in the field of media processing and/or transmission. More education can supplement for less practical experience, and vice versa. Pet. 4–5. Patent Owner does not dispute Petitioner’s description. Prelim. Resp. 26.” slip op. at 8
- Expert testimonyPetitioner expert discountedDecided for patent owner
“Petitioner cites the Alermoth Declaration, paragraphs 198–201, but does not explain the content or pertinence of this testimony. See Pet. 21. We have reviewed this testimony and determine that it is conclusory. This testimony repeats, almost verbatim, the language in the Petition without any further explanation or supporting reasoning or evidence. See Ex. 1002 ¶¶ 198–201. We accord this testimony little or no weight. See cxLoyalty, Inc. v. Maritz Holdings Inc., 986 F.3d 1367, 1378 (Fed. Cir. 2021) (“We do not accord weight to conclusory expert testimony.”); see also 37 C.F.R. § 42.65(a) (“Expert testimony that does not disclose the underlying facts or data on which the opinion is based is entitled to little or no weight.”).” slip op. at 16
- Obviousness (§103) › Motivation to combine / reasonable expectation of successMotivation not foundNot shown unpatentable
“With regard to Petitioner’s contention that “it would have been obvious for a POSITA to modify Ferman’s system to more explicitly select clips for inclusion in the final video programming based on their ability to transition between other events,” we determine that this contention is not adequately supported by articulated reasoning. See Pet. 48. Petitioner asserts that, “[a] POSITA would have been motivated to do so by at least Ferman’s expressed desire to ‘include content suited to [the user’s] particular viewing preferences.’” Id. (citing Ex. 1002 ¶ 89). There is no articulated reasoning (and we can discern none) as to how or why including content suited to a user’s preferences would have motivated a skilled artisan to modify Ferman to select transitional clips. Petitioner also asserts, “doing so would provide more compelling and cohesive video programming.” Id. There is no articulated reasoning or explanation for this assertion and we find this statement to be too general and unsupported. We determine that Petitioner has not established that a skilled artisan would have been motivated to modify Ferman’s system as proposed in the Petition. Patent Owner argues that “Petitioner fails to demonstrate that Ferman discloses ‘identifying . . . a plurality of first[/second] transitional clips.’” Prelim. Resp. 39 (alteration in original). We agree with Patent Owner that the Petition fails to provide adequate support for its assertion that limitations 1[d] and 1[j] are taught or suggested by Ferman.” slip op. at 26
§ 103 obviousnesscites Phillips · GrahamPatents in suitUS 9,317,597
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.