- PTAB · Feb 9, 2026 · IPR2025-00933 · APJ Terrence W Mcmillin · IPR · Institution
The Board instituted inter partes review of claims 1–12 on all three §103 grounds, finding a reasonable likelihood that Samsung would prevail.
RulingsInstitution decision- PTAB / AIA Trials › Institution threshold (reasonable likelihood / more likely than not)InstitutedInstituted
“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 institute an inter partes review as to claims 1–12 of the ’595 patent.3” slip op. at 2
- Skill levelSkill level petitioner adoptedOther
“B. Level of Ordinary Skill in the Art Petitioner contends that [A] person of ordinary skill in the art (“POSITA”) would have had a Bachelor’s degree in electrical engineering, computer engineering, computer science, or a related field, and at least 3 years of experience in the research, design or development of wireless communication devices, systems, and/or networks, or the equivalent. Pet. 3 (citing Ex. 1003 ¶ 26). Petitioner further contends that “[i]ncreased educational experience can make up for less work experience, and vice versa.” Id. Patent Owner objects to Petitioner’s proposed level of ordinary skill in the art only “[t]o the extent that Petitioner requires [] the required experience and/or education level to be acquired by December 24, 2015.” Prelim. Resp. 8. Determining the level of ordinary skill in the art involves various factors, including the “type of problems encountered in the art; prior art solutions to those problems; rapidity with which innovations are made; sophistication of the technology; and educational level of active workers in the field.” In re GPAC Inc., 57 F.3d 1573, 1579 (Fed. Cir. 1995) (citation omitted). The prior art of record also reflects the level of ordinary skill in the art. See Okajima v. Bourdeau, 261 F.3d 1350, 1355 (Fed. Cir. 2001). For purposes of this institution decision, with the exception of the openended language “at least,” we adopt the assessment offered by Petitioner.11 11 No matter how designated in this decision, any determination (except our determination to institute trial) is preliminary and non-binding. We wish to have the full record as developed during trial before rendering any binding determination, finding, or conclusion. It is not materially disputed by the Patent Owner and is consistent with the ’595 patent and the asserted prior art.” slip op. at 9
- Claim Construction › Intrinsic evidence (Phillips canons) › Preamble limiting or notPreamble not limitingOther
“[7.pre] A wireless communication method of a wireless communication terminal, the method comprising:13 Petitioner relies on Josiam “disclos[ing] ‘methods for efficient signaling and addressing in WLAN [wireless local area network] systems.’” Pet. 11 (citing Ex. 1003 ¶ 112; Ex. 1005 ¶ 4).14 The Petition states that “Josiam’s methods describe at least one station (i.e., a wireless communication terminal).” Id. 13 Petitioner does not address whether the preamble of claim 7 is limiting. See Pet. 1. We determine that the preamble of claim 7 is not limiting because it does not recite essential steps or structure and is not necessary to give life, meaning, and vitality to the claim. See Shoes by Firebug LLC v. Stride Rite Children’s Group, LLC, 962 F.3d 1362, 1367 (Fed. Cir. 2020). 14 Petitioner provides parallel citations to Exhibit 1006, the earliest provisional application to which Josiam claims priority (see Ex. 1005, code (60), in order to show that “the relevant subject matter relied upon herein is fully supported by respective provisional applications filed before the [filing date (December 24, 2015) of the earliest foreign application to which the ’595 patent claims priority (see Ex. 1001, code (30)].” Pet. 2. At least at this stage, there is no dispute between the parties as to whether Josiam or the ’595 patent are entitled to the claimed priority. See Prelim. Resp. 1 fn.1, 12 fn. 2. Therefore, unless deemed necessary to Petitioner’s showing, we do not include references to the Petition’s citations to Exhibit 1006 or discussion of Exhibit 1006 in our analysis. However, if Petitioner cites to Exhibit 1006 in a passage that we quote, we maintain these citations so that our quotation is accurate and complete.” slip op. at 13
- Obviousness (§103) › Motivation to combine / reasonable expectation of successMotivation foundInstituted
“combination of the disclosures of Chen and Wu and articulates reasons why a skilled artisan would be motivated to combine the relevant teachings of Chen and Wu. See Pet. 42–85. This challenge to the patentability of the claims of the ’595 patent (Ground 2 of the Petition) is detailed and supported by the cited evidence. With regard to this ground and the asserted combination of art, Patent Owner argues that “[s]imilar to Grounds 1A and 1B, Chen and Wu do not show that ‘the bandwidth field of HE-SIG-A is used to obtain information of the unassigned resource unit’ as both the bandwidth field in HE-SIG-A and a subfield in HESIG-B need to be used for explicitly indicating the unassigned resource unit.” Prelim. Resp. 15. The quoted passage is limitation 7.5 and the “explicitly indicat[ing]” element is in limitation 7.7.16 See Ex. 1001, 54:3–4, 54:9–12; see also Pet. vii (showing claim 7 with limitations numbered and labeled). Thus, Patent Owner disputes the same limitations with a similar argument as for the earlier grounds in disputing the showing in the Petition for this ground. With regard to the disputed limitations, the Petition provides that, from a combination of the teachings and suggestions of Chen and Wu, a skilled artisan would understand that “the bandwidth field of HE-SIG-A indicates where in the overall bandwidth the non-allocated RU is located by defining the number of 20MHz channels and the arrangement and length of the HE-SIG-B content channels.” Pet. 60 (citing Ex. 1003 ¶ 178). The Declaration of Dr. Buehrer provides: 16 Limitation 7.7 recites: “the unassigned resource unit is explicitly indicated with the information of the unassigned resource unit based on the bandwidth field and the at least one subfield.” Ex. 1001, 54:9–12; Pet. vii (emphasis added). 178. Chen-Wu renders obvious using the bandwidth field of HE-SIG-A to obtain the information of the unassigned resource unit. As one example, a POSITA would have understood the Chen-Wu combination as rendering obvious that RU non-allocation information in HE-SIG-B indicates the location of a non-allocated RU within a 20MHz channel, while the bandwidth field of HE-SIG-A indicates where in the overall bandwidth the non-allocated RU is located by defining the number of 20MHz channels and the arrangement and length of the HE-SIG-B content channels. SAMSUNG-1008, [0101], [0098]; SAMSUNG-1009, [0036]; SAMSUNG-1010, 10. 179. Chen teaches that “RU allocation may be determined based at least in part on the PAID, channel bandwidth, and the HE-SIG-B.” SAMSUNG-1008, [0101], [0098]. I note that the Applicant did not dispute the Examiner’s finding that Chen teaches this limitation. See SAMSUNG- 1002, 68, 102 (citing SAMSUNG-1008, [0093], [0098], [0103], Fig. 14). 180. Moreover, Wu teaches “a fixed format common field in the HE-SIGB is defined for each operation bandwidth. Therefore, the length and format of the common field are predefined [based on the bandwidth]. In this approach, there is no [additional] indication needed in the HE-SIG-A.” SAMSUNG-1009, [0036]; SAMSUNG-1010, 10. As I explained above for [7.2] and [7.4], a POSITA would have understood Chen’s HE-SIG-A as including a bandwidth field that indicates the operation bandwidth of the PPDU. See [7.2], [7.4]. 181. For example, if the bandwidth field of HE-SIG-A indicates a PPDU bandwidth of 80 MHz, and the resource unit allocation field of the common field of HE-SIG-B indicates that the 20 MHz corresponding to the fourth channel is partitioned into 106, 26, and 106-tone resource units, the resource unit non-allocation information may indicate that the 26-tone resource unit is not assigned to any user through, e.g., a bitmap per Chen. SAMSUNG-1008, [0075], [0089]-[0093], Figs. 4, 12- 14; SAMSUNG-1009, [0035]-[0043], Figs. 2-4; SAMSUNG- 1010, 2-6, 10-14. Ex. 1003 ¶¶ 178–181 (alterations in original) (footnote omitted). We determine that this testimony of Dr. Buehrer is supported and reasonable and sufficiently persuasive and credible to support institution. We also note that Patent Owner does not, at least at this stage, provide any contradictory expert testimony.17 We have considered Patent Owner’s arguments relating to the disputed limitations and this ground and found them not to be as well-supported as the Petitioner’s showing for essentially the same reasons as discussed above with regard to Ground 1A. Based on the current record, we determine that there is a reasonable likelihood that Petitioner will prevail with respect to the unpatentability of claims 1–12 of the ’595 patent based on a combination of the teachings and suggestions of Chen and Wu.” slip op. at 29
Claim construction§ 103 obviousnesscites Phillips · KSR · GrahamPatents in suitUS 11,470,595 - PTAB · Feb 6, 2026 · IPR2025-00988 · APJ Terrence W Mcmillin · IPR · Institution
The Board instituted IPR on claims 1–14 and all petition grounds; it found a reasonable likelihood of success on the Josiam-based grounds, while the Bharadwaj grounds lacked established prior-art status.
RulingsInstitution decision- PTAB / AIA Trials › Institution threshold (reasonable likelihood / more likely than not)InstitutedInstituted
“review. 35 U.S.C. § 314 (2018); 37 C.F.R. § 42.4(a) (2020) (“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 institute an inter partes review as to claims 1–14 of the ’281 patent.3” slip op. at 2
- Skill levelSkill level petitioner adoptedDecided for petitioner
“Determining the level of ordinary skill in the art involves various factors, including the “type of problems encountered in the art; prior art solutions to those problems; rapidity with which innovations are made; sophistication of the technology; and educational level of active workers in the field.” In re GPAC Inc., 57 F.3d 1573, 1579 (Fed. Cir. 1995) (citation omitted). The prior art of record also reflects the level of ordinary skill in the art. See Okajima v. Bourdeau, 261 F.3d 1350, 1355 (Fed. Cir. 2001). For purposes of this institution decision, we adopt the assessment offered by Petitioner.11 It is not materially disputed by the Patent Owner and is consistent with the ’281 patent and the asserted prior art.” slip op. at 10
- Claim Construction › Threshold & procedure › Whether a term needs construction (O2 Micro)No construction neededNot reached
“Petitioner asserts “that no formal claim constructions are necessary.” Pet. 3. “Patent Owner applies the plain and ordinary meaning of the challenged claims.” Prelim. Resp 11. At this stage, no need exists to expressly construe any claim terms to resolve any dispute between the parties.12 See Nidec Motor Corp. v. Zhongshan Broad Ocean Motor Co., 868 F.3d 1013, 1017 (Fed. Cir. 2017) (“[W]e need only construe 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))). D.” slip op. at 11
- Novelty / Anticipation (§102) › Priority / effective filing date / continuation supportPriority date, deniedReference is prior artDecided for petitioner
“contention that either of the cited documents alone discloses all the elements of these limitations. And, the disclosure relied on in Exhibit 1007 is not alleged to be found in Exhibit 1009 and vice-versa. Patent Owner has not shown that any of the pre-May 14, 2016, Korean applications from which the ’281 claims priority includes disclosure of all the elements recited in limitations 1.9 and 8.6. At least at this stage, we determine that Petitioner has sufficiently shown, for the purpose of institution that Josiam is prior art.16 We credit the testimony of Dr. Buehrer cited in the Petition that none of the Korean applications to which the ’281 patent claims priority filed earlier than May 14, 2016, “explicitly, implicitly, or inherently discloses using both the bandwidth field of the HE-SIG-A and the resource unit allocation field of the HE-SIG-B to indicate channel puncturing information as the claim elements require. . . . At best, these documents discuss indicating unused channels using either HE-SIG-A or HE-SIGB fields—but not both.” Pet. 7 (citing Ex. 1003 (Buehrer Decl.) ¶¶ 90–91). Dr. Buehrer’s testimony has not been shown by Patent Owner to be inaccurate.” slip op. at 20
Claim construction§ 102 anticipation§ 103 obviousnesscites Phillips · KSRPatents in suitUS 10,687,281 - PTAB · Jan 14, 2026 · PGR2025-00059 · APJ Devon Zastrow Newman · PGR · Institution
The Board instituted post-grant review of claims 1–4 on all four asserted grounds, finding a sufficient preliminary showing of obviousness and lack of enablement.
RulingsInstitution decision- PTAB / AIA Trials › Institution threshold (reasonable likelihood / more likely than not)InstitutedInstituted
“V. CONCLUSION Petitioner has, at this stage, established that it will more likely than not prevail in showing that at least one of the challenged claims is unpatentable. This determination is, however, based on a preliminary record and is not final on any issues of patentability. We will make a final determination on the patentability of the challenged claims, as necessary and applying the preponderance of the evidence standard, based on a fully developed record through trial. VI. ORDER In consideration of the foregoing, it is hereby: ORDERED that, pursuant to 35 U.S.C. § 324(a) post grant review of claims 1–4 of the ’233 patent is hereby instituted on the grounds set forth in the Petition, commencing on the entry date of this Order, and pursuant to 35 U.S.C. § 324(d) and 37 C.F.R. § 42.4, notice is hereby given of the institution of a trial; and” slip op. at 40
- Skill levelSkill level petitioner adoptedDecided for petitioner
“Patent Owner does not proffer a description of a POSA. See generally, Prelim. Resp. For the purposes of this decision, on the record at this time, we find that Petitioner’s definition appears consistent with the level of skill shown in the prior art references of record, and apply it herein. See Daiichi Sankyo Co. v. Apotex, Inc., 501 F.3d 1254, 1256 (Fed. Cir. 2007). We invite the parties to further address the definition of a POSA during trial should they find it necessary.” slip op. at 7
- Expert testimonyPetitioner expert discountedDecided for patent owner
“In addition, the opinion stated in the Pomper Declaration that “the term of ‘low molecular weight’ is well accepted in the chemical arts” and the declarant “recognize[s] that low molecular weight compounds would have a molecular weight of typically from about 50 Daltons to about 1,500 Daltons” is offered by a co-inventor. We, as factfinder, have discretion to weigh the credibility of expert witnesses and to give each item of evidence such weight as appropriate. See In re Am. Acad. of Sci. Tech Ctr., 367 F.3d 1359, 1368 (Fed. Cir. 2004) (“[T]he Board is entitled to weigh the declarations and conclude that the lack of factual corroboration warrants discounting the opinions expressed in the declarations.”). In this case, we find that the published references on metabolites do not support the opinion. In re Am. Acad. of Sci. Tech Ctr., 367 F.3d at 1368 (“[T]he Board is entitled to weigh the declarations and conclude that the lack of factual corroboration warrants discounting the opinions expressed in the declarations.”) US-121, of which Dr. Pomper is lead inventor, also uses the term “low molecular weight”—without further characterization of the term—and is uninformative as to the meaning of the term. See Ex. 1006, ¶ 12. In addition, Patent Owner’s definition does not appear to apply to all compounds claimed in US-121.5” slip op. at 11
- Claim Construction › Intrinsic evidence (Phillips canons) › Plain and ordinary meaning to a POSITATerm construed patent owner constructionDecided for patent owner
“limited to Patent Owner’s proposed “from about 50 Daltons to about 1,500 Daltons.” The cited evidence relied on in the Pomper Declaration to define “low molecular weight” as a term well accepted in the chemical arts relates to metabolomics and metabolites. See Ex. 1002, 169, (specifically, ¶ 17 of Dr. Pomper’s declaration). Patent Owner admits that Dr. Pomper’s testimony is about molecules that differ from the claimed imaging and radiotherapeutic agents targeting FAP-α, but argues that the testimony is still relevant for purposes of explanation. Prelim Resp. 21. While it may be relevant, the testimony is not persuasive in light of the Specification. We find the uncontested fact that several of the B moieties alone—without the A moiety or L linker—specifically identified in the ’233 patent fall outside of Patent Owner’s proposed definition persuasive, as we normally do not interpret claim terms in a way that excludes examples disclosed in the specification. See, e.g., Verizon Servs. Corp. v. Vonage Holdings Corp., 503 F.3d 1295, 1305 (Fed. Cir. 2007) (rejecting proposed claim interpretation that would exclude disclosed examples in the specification). The cases cited by Patent Owner supporting that a claim term may be construed to exclude embodiments where the prosecution history supports such construction are factually distinguishable from the instant case as they regard instances of specific prosecution history disclaimer, clear prosecution disavowal, or relate to a specific definition of the terms in the Specification for the term being construed. Here, “low molecular weight” is not defined in the Specification, but, as Petitioner argues (see Pet. 21–25) is characterized as “demonstrat[ing] faster pharmacokinetics and a higher specific signal within clinically convenient times after administration” and that it “can be synthesized in radiolabeled form more easily.” Ex.1001, 13:33–50, 14:56– 16:14, 17:9–20. We are persuaded by the testimony of Dr. Zeglis, Petitioner’s declarant, that compounds weighing over 1500 Da may share those same behaviors, along with certain identified B moieties disclosed as embodiments. See Ex. 1003 ¶ 83.” slip op. at 10
Claim construction§ 103 obviousness§ 112 disclosurecites KSR · GrahamPatents in suitUS 12,115,233 - PTAB · Dec 10, 2025 · IPR2025-01069 · APJ Daniel J Galligan · IPR · Institution
The Board instituted IPR on claims 1–14 and all asserted grounds, finding a reasonable likelihood of prevailing based on Bharadwaj alone and Bharadwaj with Yu.
RulingsInstitution decision- PTAB / AIA Trials › Institution threshold (reasonable likelihood / more likely than not)InstitutedInstituted
“institute review. Paper 11. 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 the Preliminary Response shows “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 institute an inter partes review of all challenged claims on all grounds raised in the Petition.” slip op. at 2
- Skill levelSkill level petitioner adoptedDecided for petitioner
“To the extent Patent Owner contends that a person of ordinary skill in the art need not be defined as of the critical date, we disagree. Under Section 103, we must determine “if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains” (emphasis added). “Obviousness is determined from the vantage point of a hypothetical person having ordinary skill in the art to which the patent pertains.” In re Rouffet, 149 F.3d 1350, 1357 (Fed. Cir. 1998). Thus, we define the hypothetical person of ordinary skill in the art as of a time before the effective filing date. To the extent Patent Owner’s argument is that, to testify from the perspective of a person of ordinary skill in the art, one need not have been a person of ordinary skill in the art as of the critical date, we agree. Although one must at least possess ordinary skill in the art to testify from the perspective of a person of ordinary skill, [a]n expert need not have acquired that skill level prior to the time of the invention to be able to testify from the vantage point of a person of ordinary skill in the art. Rather, an expert can acquire the necessary skill level later and develop an understanding of what a person of ordinary skill knew at the time of the invention. Osseo Imaging, LLC v. Planmeca USA Inc., 116 F.4th 1335, 1341 (Fed. Cir. 2024). the uncontested assessment offered by Petitioner, which appears consistent with the ’077 patent and the asserted prior art, except that we delete the qualifier “at least” to eliminate vagueness as to the amount of experience.” slip op. at 6
- Claim Construction › Threshold & procedure › Whether a term needs construction (O2 Micro)No construction neededNot reached
“C. Claim Construction The parties agree that no claim terms require express construction. Pet. 10; Prelim. Resp. 2–4. Patent Owner, however, notes that, in related district court litigation, Petitioner has asserted that some claims terms are indefinite. Patent Owner argues that the Petition should be denied because Petitioner has taken inconsistent claim construction positions between the district court and the Board. Paper 14 at 1–3 (citing Tesla, Inc. v. Intellectual Ventures II LLC, IPR2025-00340, Paper 18 at 4 (PTAB Nov. 5, 2025) (informative); Revvo Techs., Inc. v. Cerebrum Sensor Techs., Inc., IPR2025-00632, Paper 20 at 4–5 (PTAB Nov. 3, 2025) (precedential)). Petitioner responds that, in the related district court litigation, the parties have narrowed the claim construction disputes and that Petitioner accords the plain and ordinary meaning to claim terms and no longer asserts that any claim term of the ’077 patent is indefinite. Paper 15 (citing, inter alia, Ex. 1126 (Defendants’ Responsive Claim Construction Brief)). The evidence supports Petitioner’s position because, in the related district court litigation, the defendants agree with the plaintiff (Patent Owner) that certain phrases in the ’077 patent claims should be given their “[p]lain and ordinary meaning” and are “not indefinite.” Ex. 1126, 6 (native page 1). Thus, the record does not show inconsistent claim construction positions that warrant denial under PTAB precedent. See Revvo, Paper 20 at 5 (addressing a situation in which a petitioner advances “different claim construction positions” in district court and at the PTAB). See Realtime Data, LLC v. Iancu, 912 F.3d 1368, 1375 (Fed. Cir. 2019) (“The Board is required to construe ‘only those terms . . . that are in controversy, and only to the extent necessary to resolve the controversy.’” (quoting Vivid Techs., Inc. v. Am. Sci. & Eng’g, Inc., 200 F.3d 795, 803 (Fed. Cir. 1999))).” slip op. at 7
- Novelty / Anticipation (§102) › Prior-art status of a reference › Patents / published applications (effective date, provisional support)Reference is prior artDecided for petitioner
“We agree with Patent Owner that Bharadwaj includes subject matter that is not in Bharadwaj-Prov59, namely the change from adding the value Resp. 20; Ex. 1007 ¶ 51 (adding m); Ex. 1006 ¶ 50 (subtracting m); Prelim. Resp. 20. Petitioner, however, points out this change in the Petition and acknowledges that it is after the identified critical date of August 20, 2015. See Pet. 28. Thus, we do not understand Petitioner to be relying on Bharadwaj’s disclosure of subtracting m to determine length, as disclosed in the publication of the non-provisional application, as a prior art disclosure. We understand Petitioner to be relying on disclosures in Bharadwaj-Prov059 for prior art teachings for its obviousness contentions. Patent Owner does not appear to dispute that Bharadwaj-Prov59’s disclosures are prior art, arguing instead that it is improper to rely “on matters in Bharadwaj beyond ‘incorporation by reference’ of the Bharadwaj-Prov59.” See Prelim. Resp. 20–21. On this record, we determine that Bharadwaj-Prov59’s disclosures are prior art as of its June 2, 2015, filing date by virtue of its incorporation by reference into Bharadwaj, a published US patent application. Ex. 1006 ¶ 1; see Pet. 12–13.” slip op. at 8
Claim construction§ 102 anticipation§ 103 obviousnesscites KSR · GrahamPatents in suitUS 10,313,077 - PTAB · Nov 7, 2025 · IPR2025-01044 · APJ Daniel J Galligan · IPR · Institution
The Board instituted IPR of claims 1–10 on all asserted grounds, finding a reasonable likelihood that Samsung would prevail on at least claim 1 under §103.
RulingsInstitution decision- PTAB / AIA Trials › Institution threshold (reasonable likelihood / more likely than not)InstitutedInstituted
“institute review. Paper 11. 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 the Preliminary Response shows “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 institute an inter partes review of all challenged claims on all grounds raised in the Petition.” slip op. at 2
- Skill levelSkill level board ownDecided for petitioner
“had a bachelor’s degree in electrical engineering, computer engineering, computer science, or a related field, and at least 3 years of experience in the research, design or development of wireless communication devices, systems, and/or networks, or the equivalent, as of the Critical Date,” which we understand Petitioner identifies as September 7, 2016. Pet. 2, 4 (citing Ex. 1003 ¶¶ 26–28). Petitioner also contends that “[i]ncreased educational experience can make up for less work experience, and vice versa.” Pet. 4. Patent Owner does not object to Petitioner’s definition at this stage. Prelim. Resp. 11. To the extent necessary, and for purposes of this Decision, we accept the uncontested assessment offered by Petitioner, which appears consistent with the ’879 patent and the asserted prior art, except that we delete the qualifier “at least” to eliminate vagueness as to the amount of experience.” slip op. at 5
- Claim Construction › Threshold & procedure › Whether a term needs construction (O2 Micro)No construction neededOther
“C. Claim Construction The parties agree that no claim terms require express construction. Pet. 4; Prelim. Resp. 11. On this record, we determine that no terms need express construction. See Realtime Data, LLC v. Iancu, 912 F.3d 1368, 1375 (Fed. Cir. 2019) (“The Board is required to construe ‘only those terms . . . that are in controversy, and only to the extent necessary to resolve” slip op. at 5
- Obviousness (§103) › Motivation to combine / reasonable expectation of successMotivation foundOther
Claim construction§ 103 obviousnesscites KSR · GrahamPatents in suitUS 11,516,879 - PTAB · Nov 7, 2025 · IPR2025-01043 · APJ Daniel J Galligan · IPR · Institution
The Board instituted IPR of claims 1–10 on all petition grounds, finding a reasonable likelihood that Samsung would prevail on at least claim 1 as obvious over Zhou, Cherian, and Kim.
RulingsInstitution decision- PTAB / AIA Trials › Institution threshold (reasonable likelihood / more likely than not)InstitutedInstituted
“institute review. Paper 11. 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 the Preliminary Response shows “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 institute an inter partes review of all challenged claims on all grounds raised in the Petition.” slip op. at 2
- Skill levelSkill level board ownOther
“had a bachelor’s degree in electrical engineering, computer engineering, computer science, or a related field, and at least 3 years of experience in the research, design or development of wireless communication devices, systems, and/or networks, or the equivalent, as of the Critical Date,” which we understand Petitioner identifies as September 7, 2016. Pet. 2, 4 (citing Ex. 1003 ¶¶ 26–28). Petitioner also contends that “[i]ncreased educational experience can make up for less work experience, and vice versa.” Pet. 4. Patent Owner does not object to Petitioner’s definition at this stage. Prelim. Resp. 11. To the extent necessary, and for purposes of this Decision, we accept the uncontested assessment offered by Petitioner, which appears consistent with the ’035 patent and the asserted prior art, except that we delete the qualifier “at least” to eliminate vagueness as to the amount of experience.” slip op. at 5
- Claim Construction › Threshold & procedure › Whether a term needs construction (O2 Micro)No construction neededOther
“C. Claim Construction The parties agree that no claim terms require express construction. Pet. 4; Prelim. Resp. 11. On this record, we determine that no terms need express construction. See Realtime Data, LLC v. Iancu, 912 F.3d 1368, 1375 (Fed. Cir. 2019) (“The Board is required to construe ‘only those terms . . . that are in controversy, and only to the extent necessary to resolve” slip op. at 5
- Obviousness (§103) › Motivation to combine / reasonable expectation of successMotivation foundOther
“expressly discloses multiple options for resetting the timer, including “after the STA 106 transmits a scheduled UL transmission, or transmits a scheduled UL transmission and gets an ACK message.” Ex. 1005 ¶ 81. We find sufficiently persuasive Petitioner’s explanation that “after” in Zhou means after the transmission ends if an ACK is not requested; in the case of an ACK, Zhou expressly discloses starting the timer after receiving the ACK. See Pet. 46–49. Petitioner’s declarant, Dr. Valenti, testifies that “[a] STA measures the ‘completion’ of the transmission by receiving an ACK— if an ACK is requested—or upon completion of the physical transmission.” Ex. 1003 ¶ 152 (citing Ex. 1018 ¶ 9). On this record, we find this testimony to be sufficiently credible based on the evidence cited. See Ex. 1018 ¶ 9 (“A successful transmission occurs when the node either receives an expected acknowledgment correctly, or transmits a frame that does not require an acknowledgement.”).” slip op. at 13
Claim construction§ 103 obviousnesscites KSR · GrahamPatents in suitUS 11,116,035 - PTAB · Nov 3, 2025 · IPR2025-00934 · APJ Terrence W Mcmillin · IPR · Institution
The Board instituted IPR on claims 1–9 and all asserted grounds, finding a reasonable likelihood that claims 1–9 are obvious over Bharadwaj and Sun.
RulingsInstitution decision- PTAB / AIA Trials › Institution threshold (reasonable likelihood / more likely than not)InstitutedInstituted
“institute review. Paper 11. 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 institute an inter partes review as to claims 1–9 of the ’210 patent.” slip op. at 2
- Novelty / Anticipation (§102) › Prior-art status of a reference › Printed publication / public accessibilityPrinted publication establishedNot reached
“We are aware, however, that we must not confuse access with accessibility. See Samsung Elecs. Co. v. Infobridge Pte. Ltd., 929 F.3d 1363, 1374 (Fed. Cir. 2019) (“[A] petitioner need not establish that specific persons actually accessed or received a work to show that the work was publicly accessible.”). Dr. Hansen notes that the cover of 802.11ax_D1.0 grants permission to reproduce the document to others for consideration. Ex. 1026 ¶ 72; see Ex. 1004, 1 (“Permission is hereby granted for IEEE Standards Committee participants to reproduce this document for purposes of international standardization consideration.”). Dr. Hansen also testifies that meetings to discuss 802.11ax_D1.0 were open to the public. Ex. 1026 ¶ 58 (citing Appendix J to declaration). Thus, it appears, on the current record, that the purpose of 802.11ax_D1.0 was to promote dialogue with interested artisans, which indicates public accessibility. See Valve Corp. v. Ironburg Inventions Ltd., 8 F.4th 1364, 1374 (Fed. Cir. 2021) (“We have previously held that where a publication’s purpose is ‘dialogue with the intended audience,’ that purpose indicates public accessibility.” (citation omitted)). After having reviewed all the arguments and evidence presented by the parties, we would like to see further development of this issue during trial. The current record is not well-developed on this issue either factually or legally. With regard to the factual record, Patent Owner has not yet had the opportunity to depose Dr. Hansen or been given a full opportunity to marshal its own evidence on this issue. With regard to the law, we would like to see the parties apply the relevant case law to the developed facts as to the public accessibility and prior art status of 802.11ax_D1.0. We will determine, if necessary and appropriate, whether 802.11ax_D1.0 is prior art to the challenged claims of the ’210 patent based on the full record as developed during trial.” slip op. at 14
- Obviousness (§103) › Motivation to combine / reasonable expectation of successMotivation foundDecided for petitioner
“As an initial matter, Bharadwaj and Sun are both analogous art to the ’210 Patent in that that they are both concerned with the design of the PHY data unit for supporting MU-MIMO transmissions in the downlink. SAMSUNG-1003, ¶¶153- 158. . . . In addition, both Bharadwaj and Sun describe MU- MIMO downlink PHY data unit structures in the context of 802.11ax. SAMSUNG-1013, ¶[0064]; SAMSUNG-1015, ¶[0031]; SAMSUNG-1003, ¶¶153-158. . . . . [A] POSITA implementing Bharadwaj’s preamble designs would have been motivated to look to another reference, like Sun, for an understanding of the format of the user field that would support non-MU-MIMO allocations and the single-user transmission scenario. A POSITA would have combined the teachings of Bharadwaj with Sun to realize implementation details for the HE-SIG-A and HE-SIG-B fields of the HE MU PPDU to better support both MU-MIMO and non-MU-MIMO allocations. SAMSUNG-1003, ¶¶153-158. . . . . A POSITA would have found it obvious to look to Sun for modifying Bharadwaj to include the user field format for SU (non-MU-MIMO) allocation to complement Bharadwaj’s disclosure of the MU-MIMO user field format and to provide a more complete system that would allow HE MU PPDUs to support both MU-MIMO allocations for multiple users and non-MU-MIMO allocations for a single user. SAMSUNG- 1003, ¶¶153-158. The combination also would have been obvious and predictable for at least the following reasons: 1) both Bharadwaj and Sun describe designs for a PHY data unit (or PPDU) to support communications between an AP and a station within a high-efficiency Wi-Fi network, consistent with 802.11ax; 2) both Bharadwaj and Sun describe the PPDU design for supporting MU-MIMO downlink transmission as including HE- SIG-A and HE-SIG-B fields; and 3) Bharadwaj already describes the format for the user field for the MU-MIMO allocation, while also recognizing the single-user scenario, and the combination merely involves the addition to Bharadwaj of the user field format for the single-user allocation, as taught by Sun. SAMSUNG-1003, ¶¶153- 158. The combination is obvious also because elements of the combined system would each perform similar functions they had been known to perform in similar contexts outside the combination. SAMSUNG-1003, ¶¶153-158. . . . . A POSITA would have reasonably expected success implementing the combination, especially considering the substantially similar 802.11ax techniques described in each reference. SAMSUNG-1003, ¶¶153-158. Additionally, combining the teachings of Bharadwaj with Sun would have merely involved combining prior art elements according to known methods to yield predictable results. SAMSUNG-1003, ¶¶153-158.” slip op. at 31
- Claim Construction › Threshold & procedure › Whether a term needs construction (O2 Micro)No construction neededDecided for petitioner
“Petitioner asserts that “no formal claim constructions are necessary.” Pet. 2. Patent Owner notes that “both parties have submitted terms for construction in the district court for this Patent” (Prelim. Resp. 6), but that “for purposes of [the] Preliminary Response, Patent Owner applies the plain and ordinary meaning of the challenged claims” (id. at 8). Accordingly, at this stage, no need exists to expressly construe any claim terms to resolve the parties’ disputes.9 See Nidec Motor Corp. v. Zhongshan Broad Ocean Motor Co., 868 F.3d 1013, 1017 (Fed. Cir. 2017) (“[W]e need only construe terms ‘that are in controversy, and only to the extent necessary to resolve the controversy.’” (quoting Vivid Techs., Inc. v. Am. Sci. & Eng’g, Inc., 200 F.3d 795, 803 (Fed. Cir. 1999))).” slip op. at 9
Claim construction§ 102 anticipation§ 103 obviousnesscites Phillips · KSR · GrahamPatents in suitUS 11,159,210 - TCL Electronics Holdings Ltd. (F/K/A TCL Multimedia Technology Holdings, Ltd.) v. Maxell, Ltd.InstitutedPTAB · May 20, 2025 · IPR2025-00120 · APJ Jason W Melvin · IPR · Institution
The Board instituted IPR of claims 1–4 because Petitioner showed a reasonable likelihood that Acharya renders at least one challenged claim obvious.
RulingsInstitution decision- PTAB / AIA Trials › Discretionary denial › Fintiv (parallel litigation)Denied
“asserted in the Texas litigation. Prelim. Resp. 14. Petitioner stipulates not to pursue in the Texas litigation “the same grounds or any grounds that could have reasonably been raised before the PTAB.” Pet. 68. Such a Sotera stipulation eliminates the substantive overlap between this proceeding and invalidity in the Texas litigation. See Sotera Wireless, Inc. v. Masimo Corp., IPR2020-01019, Paper 12 at 18–19 (PTAB Dec. 1, 2020) (precedential as to § II.A). This factor weighs strongly against discretionary denial.” slip op. at 8
- PTAB / AIA Trials › Discretionary denial › §325(d) same art / argumentsDenied
“Petitioner points out differences between Acharya and Robbins, in that Robbins discloses Internet Protocol Television (IPTV) media distribution, whereas Acharya discloses a system for multiple users in a meeting to display media on a single display. Prelim. Reply 2. Petitioner asserts further that Robbins lacks the claimed communication path that bypasses the router, which is disclosed by Acharya. Id. at 2–3. And Petitioner points out that Acharya describes “the user’s ability to disconnect from the display and pass control to another participant—key to the ‘termination signal’ limitation.” Id. at 3.” slip op. at 10
- Skill levelSkill level petitioner adoptedOther
“educational background, such as a Bachelor of Science degree, in Electrical Engineering or Computer Engineering as well as some understanding of Wireless Communications” and “would have 2 years of practical experience in television or video display system development.” Pet. 12 (citing Ex. 1003 ¶¶ 50–51). Patent Owner adopts that proposed level of skill in the art. Prelim. Resp. 5–6. Petitioner’s proposed definition appears reasonable and consistent with the asserted prior art and the ’341 patent, and we adopt it here.” slip op. at 11
- Claim Construction › Threshold & procedure › Whether a term needs construction (O2 Micro)No construction neededOther
“We follow the parties’ agreed construction here, as adopted by the district court. Neither that construction nor any other affects our decision. Thus we do not expressly construe any claim term. 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)). To the extent that the scope of a particular claim term impacts a party’s argument during trial, the party should propose an express construction and show how the record supports it.” slip op. at 12
Claim construction§ 103 obviousnessDiscretionary denialPatents in suitUS 10,375,341 - PTAB · Mar 24, 2025 · IPR2024-01235 · APJ Hubert C Lorin · IPR · Institution
The Board instituted IPR of claims 1–3, 6–11, and 14–16 on all proposed grounds after finding a reasonable likelihood of prevailing on the §103 ground over Mañosa and Patel.
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), 815 F.3d at 1363 (citing 35 U.S.C. § 312(a)(3) (requiring inter partes review petitions to identify “with particularity . . . the evidence that supports the grounds for the challenge to each claim”)). 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). slip op. at 8
- Novelty / Anticipation (§102) › Prior-art status of a reference › Printed publication / public accessibilityPrinted publication establishedPrinted publication not establishedMixed
“[T]here is no presumption in favor of institution or in favor of finding a reference to be a printed publication under § 42.108(c) or any other authority. . . . [T]he burden is on the petitioner to identify with particularity evidence sufficient to establish a reasonable likelihood that the reference was publicly accessible before the critical date of the challenged patent, and therefore that there is a reasonable likelihood that it qualifies as a printed publication.” slip op. at 20
- Claim Construction › Intrinsic evidence (Phillips canons) › Specification disavowal / 'present invention' languageDisclaimer not foundDecided for petitioner
“May” expresses a possibility. The Specification reflects this interpretation of “may” when it states that “[i]n one embodiment, the organic material is not lyotropic. Thus, the organic material may not be a phospholipid.” Ex. 1001, 8:27–28 (emphasis added). One of ordinary skill would understand from this that the organic material “may not be” a phospholipid if the organic material is not lyotropic. It follows that if the organic material is lyotropic, then the organic material may be a phospholipid. Reading the statement “[t]he organic material may not be . . . a phospholipid” (id. at 8:59–63) in light of the earlier stated possibility that the organic material may be a phospholipid if the organic material is lyotropic, one of ordinary skill in the art would interpret “may not be” as excluding phospholipids under some conditions, not under all conditions. Taking the Specification’s discussion about phospholipids as exemplifying the permissive nature of the word “may,” we are unpersuaded that in stating that “[t]he organic material may not be [PMMA], a polyvinylidene difluoride-containing polymer, such as [PVDF] or PVDF- TrFE-CTFE, or a phospholipid, such as [DHPE]’” (Ex. 1001, 8:59–63), the specification “contains a clear and unmistakable disavowal of the compounds PMMA, PVDF, PVDF-TrFE-CTFE, and DHPE” and “disclaims the listed compounds” from the “organic material” of the claims under all conditions, as Patent Owner argues. Prelim. Resp. 6–7. Moreover, the claims themselves limit the “organic material” only to the extent that it is “barocaloric cooling or heating agent” and can perform in the manner claimed. See Ex. 1001, claim 1, supra. As broadly worded, the claims do not exclude PMMA, PVDF, PVDF-TrFE-CTFE, and DHPE per se from the group of organic materials employed by the claimed method. Adopting Patent Owner’s construction would impermissibly import a limitation (i.e., not exclude PMMA, PVDF, PVDF-TrFE-CTFE, and DHPE) into the claims. For the reasons stated, at this stage of the proceeding, we agree with Petitioner’s broad construction of “organic material.” We do not adopt Patent Owner’s proposed construction whereby PMMA, PVDF, PVDF- TrFE-CTFE, and DHPE are excluded from the scope of the claim term “organic material.” The parties are invited to address this issue further during trial, if desired. slip op. at 11
- Obviousness (§103) › Motivation to combine / reasonable expectation of successMotivation foundReasonable expectation foundInstituted
“Petitioner shows that (a) Mañosa (i.e., inorganic compounds such as Ni-Mn-In, Gd5Si2Ge2, and La-Fe-Co-Si) and (b) Patel (i.e., PVDF-TrFE- CTFE) teach materials exhibiting inverse BCEs. Pet. 59 (citing, inter alia, Ex. 1007, pages 4–8; Ex. 1009, 1, 4–5; Ex. 1004 ¶ 108). In our view, at this stage, Petitioner sufficiently shows (via the five reasons listed supra) why it would have been obvious to one of ordinary skill in the art to substitute the barocaloric cooling or heating agent of Patel for that taught in Mañosa, thereby reaching the claimed method with a reasonable expectation of success. Cf. KSR Int’l Co. v. Teleflex Inc., 550 U.S. 398, 416 (U.S., 2007) (“The Court recognized that when a patent claims a structure already known in the prior art that is altered by the mere substitution of one element for another known in the field, the combination must do more than yield a predictable result.”)” slip op. at 32
Claim construction§ 102 anticipation§ 103 obviousnesscites KSR · GrahamPatents in suitUS 11,230,656 - PTAB · Mar 14, 2025 · IPR2024-01421 · APJ Terrence W Mcmillin · IPR · Institution
The Board instituted IPR on claims 1–16 based on all asserted grounds, finding a reasonable likelihood that the challenged claims are unpatentable.
RulingsInstitution decision- PTAB / AIA Trials › Discretionary denial › Fintiv (parallel litigation)Decided for petitioner
“1. whether the court granted a stay or evidence exists that one may be granted if a proceeding is instituted; 2. proximity of the court’s trial date to the Board’s projected statutory deadline for a final written decision; 3. investment in the parallel proceeding by the court and the parties; 4. overlap between issues raised in the petition and in the parallel proceeding; 5. whether the petitioner and the defendant in the parallel proceeding are the same party; and 6. other circumstances that impact the Board’s exercise of discretion, including the merits.” slip op. at 10
- PTAB / AIA Trials › Institution threshold (reasonable likelihood / more likely than not)InstitutedInstituted
“review. 35 U.S.C. § 314 (2018); 37 C.F.R. § 42.4(a) (2020) (“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 institute an inter partes review as to claims 1–16 of the ’601 patent.” slip op. at 2
- Skill levelSkill level petitioner adoptedDecided for petitioner
“A POSA [(Person of Skill in the Art)] in the technical field of the ’601 patent at the relevant time would have had a B.S. degree in Computer Science, Computer Engineering, or an equivalent field, as well as at least 2–3 years of academic or industry experience in the design, analysis, and implementation of operating systems, as well as the design, analysis, and monitoring of computer networks, including issues of network security and network administration, or comparable industry experience. Pet. 11 (citing Ex. 1003 ¶ 30). At least at this stage of this proceeding, Patent Owner does not address the level of ordinary skill in the art. See generally Prelim. Resp. Determining the level of ordinary skill in the art involves various factors, including the “type of problems encountered in the art; prior art solutions to those problems; rapidity with which innovations are made; sophistication of the technology; and educational level of active workers in the field.” In re GPAC Inc., 57 F.3d 1573, 1579 (Fed. Cir. 1995) (citation omitted). The prior art of record also reflects the level of ordinary skill in the art. See Okajima v. Bourdeau, 261 F.3d 1350, 1355 (Fed. Cir. 2001). For purposes of this institution decision, we adopt the assessment offered by Petitioner.14 It is not disputed by the Patent Owner and is consistent with the ’601 patent and the asserted prior art.” slip op. at 15
- Claim Construction › Threshold & procedure › Whether a term needs construction (O2 Micro)No construction neededOther
“There are no disputes between the parties relating to claim construction. Accordingly, at this stage, no need exists to expressly construe any claim terms to resolve any dispute between the parties.15 See Nidec Motor Corp. v. Zhongshan Broad Ocean Motor Co., 868 F.3d 1013, 1017 15 If either party contends that explicit claim construction is necessary in order to make a final determination whether or not any challenged claim is unpatentable based on the arguments and evidence presented, it should clearly explain why during trial and provide a clear and unambiguous construction with supporting evidence including specifically identifying the challenges, claims, and limitations to which the construction is necessary. (Fed. Cir. 2017) (“[W]e need only construe 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))). D. Asserted Obviousness of Claims 1–4, 7, 9–12, and 15 Based on Walsh,” slip op. at 16
Claim construction§ 103 obviousnessDiscretionary denialcites Phillips · KSR · GrahamPatents in suitUS 11,223,601
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.