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  • PTAB · May 20, 2026 · IPR2025-00423 · APJ Zhenyu Yang · IPR · Institution

    The Board denied institution of IPR challenging claims 1–4 and 6–29 because it instituted the ranked IPR2025-00422 under the Director’s instruction to maintain at most one IPR.

    RulingsInstitution decision
    • Parallel petitionsInstitution denied discretionary otherDenied

      “Paper 34. Birchtech Corp. (“Patent Owner”) filed a Request for Director Review in each case. See Paper 40; IPR2025-00422, Paper 39. The Director denied the request without prejudice in each case and remanded the cases to the Board to “allow discovery, narrowly tailored to resolve the RPI and privity issues.” Paper 49, 4. The Director later issued an Order Supplementing Director Review Decision in each case, instructing that “if the Board determines that Petitioners met their burden to identify all RPIs in the Petitions, then the Board should maintain at most one IPR challenging” the ’430 patent. Paper 72, 3.” slip op. at 2

    Discretionary denial
    Patents in suitUS 10,668,430
  • PTAB · Oct 3, 2025 · PGR2025-00032 · APJ Susan L C Mitchell · PGR · Institution

    The Board denied institution because Patent Owner disclaimed all challenged claims.

    RulingsInstitution decision
    • Adverse judgmentAdverse judgmentDenied

      “Section 42.207(e) states that “[n]o post-grant review will be instituted based on disclaimed claims.” 37 C.F.R. § 42.207(e). Because the Patent Owner has disclaimed all claims challenged by the grounds in this Petition, we determine that no trial will be instituted.” slip op. at 2

    None
    Patents in suitUS 12,115,166
  • PTAB · Jun 26, 2025 · IPR2024-00294 · APJ David Cotta · IPR · Final written decision

    Claims 1–20 are unpatentable; proposed substitute claims 21–24 are also unpatentable, so the contingent motion to amend is denied.

    RulingsFinal written decision
    • Skill levelSkill level patent owner adoptedDecided for patent owner

      “appear to be that Patent Owner specifies that the POSA’s knowledge and experience may include optical sensors and that the POSA may have a degree emphasizing software. We do not deem these differences material, particularly because the optical sensors and technologies at issue are those used in physiological monitoring technologies and both parties agree that the POSA would have a working knowledge of physiological monitoring technologies. Ex. 1003 ¶ 24; PO Resp. 11. We find the additional specificity of Patent Owner’s definition to be helpful. In addition, Patent Owner’s definition appears to be consistent with the level of skill in the art reflected in the prior art of record and the disclosure of the ’507 patent. Accordingly, we adopt Patent Owner’s proposed definition of the person of ordinary skill in the art. See Okajima v. Bourdeau, 261 F.3d 1350, 1355 (Fed. Cir. 2001) (“[T]he prior art itself [may] reflect[] an appropriate level” as evidence of the ordinary level of skill in the art. (quoting Litton Indus. Prods., Inc. v. Solid State Sys. Corp., 755 F.2d 158, 163 (Fed. Cir. 1985))). We note that we would reach the same outcome under either definition of the POSA. Cf., PO Resp. 12 (asserting that Petitioner’s proposed definition is “flawed” but also asserting that “patentability is confirmed” “[r]egardless of the level of skill”).” slip op. at 14

    • Novelty / Anticipation (§102) › Prior-art status of a reference › Printed publication / public accessibilityPrinted publication establishedDecided for petitioner

      “Ex. 1007, 1528. The dispute between the parties focuses on whether D’Angelo was made available to attendees of the IEEE EMBS conference identified in this header and, if so, what effect that has.16 Accordingly, we begin our analysis by considering the conference.” slip op. at 42

    • Novelty / Anticipation (§102) › Anticipation standard (single reference, every element)UnpatentableUnpatentable

      “understood Mendelson to disclose averaging signals. We do not find in Mendelson any discussion of summing or averaging signals. See generally Ex. 1011, 912–915. Our inability to find a teaching of averaging in Mendelson is consistent with the testimony of Drs. Kenny and Duckworth. Dr. Kenny testifies that “there is simply no disclosure in Mendelson itself of any summing or averaging of collected signals.” Ex. 1083 ¶ 23. And in his deposition, Dr. Duckworth was unable to identify any express disclosure of averaging in Mendelson. See Ex. 1087, 103:9–114:11 (confirming that certain aspects of his declaration testimony relating to averaging of signals are not discussed in Mendelson). Accordingly, Mendelson, standing alone, does not support that the POSA would have understood Mendelson’s Sensor Module to have output averaged signals” slip op. at 28

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

      “the PDA to read out ‘data that’s been stored’ (i.e., previously measured physiological data) even after the Receiver Module’s battery had died” because Mendelson’s Receiver Module lacks “a microSD card or other nonvolatile storage from which measured data could be ‘read out’ after its battery has died.” PO Resp. 37; see also Ex. 2037 ¶ 147 (testimony of Dr. Duckworth confirming that Mendelson’s system could not store data that could be read out after its battery died). Accordingly, Patent Owner argues the POSA “would not have been motivated to modify Mendelson’s Receiver Module to draw power from the PDA as proposed because doing so would not allow the PDA to ‘read out’ the previously ‘measured physiological data’ after the Receiver Module’s battery died.” PO Resp. 39.” slip op. at 60

    § 102 anticipation§ 103 obviousnesscites KSR · Graham
    Patents in suitUS 10,736,507
  • PTAB · Jun 12, 2025 · DER2023-00006 · APJ John E Schneider · DER · Rehearing

    The Board denied Manitowoc’s rehearing request, declining new evidence and finding no overlooked or misapprehended argument supporting institution of a derivation proceeding.

    RulingsRehearing decision
    • RehearingRehearing, deniedDenied

      “As set forth in our rules, a request for rehearing “must specifically identify all matters the party believes the Board misapprehended or overlooked, and where each matter was previously addressed.” 37 C.F.R. §42.71(d). A request for rehearing may not include new evidence absent a showing of good cause why the evidence was not presented earlier. Huawei Device Co., Ltd. v. Optis Cellular Tech., LLC, Case IPR2018-00816, slip op. at 4 (PTAB Jan. 8, 2019) (Paper 19) (precedential). Such evidence includes declarations, and timely declarations must be filed in the form of an exhibit. 37 C.F.R. § 42.63(a). As Petitioner’s Request does not comply with our rules, we deny the Request.” slip op. at 2

    • Strike new argumentNew argument disregardedDecided for patent owner

      “Turning to the Request, it too is deficient. A Request for Rehearing must include specific identification of matters which the requesting party believes the Board overlooked or misapprehended. 37 C.F.R. § 42.71(d). A Request for Rehearing is not an opportunity to present new arguments. Moreover, Petitioner has not shown that we misapprehended or overlooked any particular matters in the Petition.” slip op. at 3

    None
  • PTAB · Apr 18, 2025 · DER2023-00006 · APJ John E Schneider · DER · Institution

    The Board denied institution of a derivation proceeding because Manitowoc did not show that all elements of amended claim 1 were conceived and communicated to Gate CFV Solutions.

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

      “invention and communicated that invention to Respondent prior to July 22, 2021, the filing date of Respondent’s ’693 application. See Pet. 6–10. Of great importance here, however, are the requirements noted above, that Petitioner must show: (1) that Petitioner has at least one claim that is the same or substantially the same as Respondent’s claimed invention; (2) that Petitioner has at least one claim that is the same or substantially the same as the invention Petitioner disclosed to Respondent; and (3) that the challenged claims are drawn to the same or substantially the same invention as the invention Petitioner disclosed to Respondent. See 37 C.F.R. § 42.405(a)(2), 37 C.F.R. § 42.405(b)(3). For the reasons discussed below, Petitioner has not made the requisite showing in the Petition with respect to at least item (2).” slip op. at 9

    None
  • PTAB · Dec 11, 2024 · IPR2024-00951 · APJ David Cotta · IPR · Institution

    The Board instituted IPR of claims 1–5 on all petition grounds, finding compelling evidence of unpatentability based on Wang and Yang.

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

      “Under 35 U.S.C. § 314(a), inter partes review may not be instituted unless the Petition “shows that there is a reasonable likelihood that the petitioner would prevail with respect to at least 1 of the claims challenged in the petition.” Institution of an inter partes review is discretionary. See 35 U.S.C. § 314(a) (authorizing institution of an inter partes review under particular circumstances, but not requiring institution under any circumstances).” slip op. at 2

    • PTAB / AIA Trials › Discretionary denial › Fintiv (parallel litigation)Denied

      “system are best served by denying or instituting review” when evaluating these factors. Fintiv, Paper 11 at 6. We have considered the circumstances and facts before us in view of Fintiv factors 1–5. As discussed above, factor 1 is neutral, factors 2, 3, and 5 weigh in favor of discretionary denial of institution, and factor 4 weighs marginally against discretionary denial. On balance, we conclude that the evidence of record on factors 1–5 favors exercising our discretion to deny institution of an inter partes review. Following CommScope, where, as here, our analysis of the first five Fintiv factors favors denial of institution, we address the merits of the Petition to determine whether, on this preliminary record, the merits are compelling. CommScope Technologies LLC v. Dali Wireless, Inc., IPR2022-01242, Paper 23 at 4–5; Guidance Memo 3–5.” slip op. at 15

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

      “In addition, Petitioner asserts that, to the extent Wang does not disclose limitation 3.3, it would have been obvious over Wang and the POSA’s knowledge of the art. According to Petitioner, and Petitioner’s declarant, Dr. Mahon, it was “well known . . . that TBs could be . . . subdivided in CBs or CBGs and that UEs could transmit HARQ-ACK bits on either a TB or CBG basis to improve the efficiency of the system and potentially prevent the need for retransmission of an entire TB whenever a NACK signal is received.” Pet. 33–34; Ex. 1003 ¶ 281. Petitioner asserts that it was also known that it was desirable to transmit one HARQ-ACK per TB in some instances and one HARQ-ACK bit per CBG in other instances. Id. Petitioner explains that there are a limited number of ways to “distinguish between one HARQ-ACK transmission method and another,” and therefore the POSA would “immediately recognize that one such distinguishing characteristic to devise such a system around is search space configuration, such that one HARQ-ACK bit is transmitted per TB in one search space configuration (e.g., CSS), while one HARQ-ACK bit is transmitted per CBG in another search space configuration.” Id.” slip op. at 25

    § 103 obviousnessDiscretionary denialcites KSR · Graham
    Patents in suitUS 10,531,443
  • PTAB · Oct 3, 2024 · IPR2024-00424 · APJ Nabeel U Khan · IPR · Institution

    The Board denied institution of review of the challenged claims under § 314(a), finding the lower-ranked petition did not justify a second set of petitions.

    RulingsInstitution decision
    • Parallel petitionsInstitution denied discretionary otherDenied

      “large number of claims alone is not sufficient to justify the filing of the second set of petitions when the first set already covers all 152 claims of the ʼ260 patent. We therefore turn to Petitioner’s reasons for why it filed the second set of petitions. In this regard, Petitioner identifies three primary “[m]aterial differences between the petition pairs.” Paper 3, 2–5. The first is that the second set of petitions relies on a different set of references, based on Madhavan, rather than Baig. Id. at 2. The second material difference relates to possible priority date issues, and the third relates to possible claim construction issues. Id. We determine that none of these “material differences” are sufficient to justify filing the second set of petitions, including this petition. See November 2019 Consolidated Trial Practice Guide (“CTPG”) 59, available at https://www.uspto.gov/TrialPracticeGuideConsolidated (“[O]ne petition should be sufficient to challenge the claims of a patent in most situations. . . . In addition, multiple petitions by a petitioner are not necessary in the vast majority of cases. . . . The Board finds it unlikely that circumstances will arise where three or more petitions by a petitioner with respect to a particular patent will be appropriate.”).” slip op. at 9

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

      “IPR2024-00421 and IPR2024-00422, we exercise our discretion under 35 U.S.C. § 314(a) to deny institution of inter partes review in this proceeding. IV. ORDER For the foregoing reasons, it is ORDERED that, pursuant to 35 U.S.C. § 314(a), the Petition is denied and inter partes review of the challenged claims of the ’260 patent is not instituted.” slip op. at 11

    Discretionary denial
    Patents in suitUS 7,861,260
  • PTAB · Oct 3, 2024 · IPR2024-00423 · APJ Nabeel U Khan · IPR · Institution

    The Board denied institution of inter partes review because Petitioner did not justify its lower-ranked second set of petitions challenging claims already covered by higher-ranked petitions.

    RulingsInstitution decision
    • Parallel petitionsInstitution denied discretionary otherDenied

      “We determine that none of these “material differences” are sufficient to justify filing the second set of petitions, including this Petition. See November 2019 Consolidated Trial Practice Guide (“CTPG”) 59, available at https://www.uspto.gov/TrialPracticeGuideConsolidated (“[O]ne petition should be sufficient to challenge the claims of a patent in most situations. . . . In addition, multiple petitions by a petitioner are not necessary in the vast” slip op. at 8

    Discretionary denial
    Patents in suitUS 7,861,260
  • PTAB · Oct 2, 2024 · IPR2024-00421 · APJ Scott B Howard · IPR · Institution

    The Board instituted IPR on claims 1–5, 7, 11–20, 22, 26–28, 35–38, 41, 44, 54, 56–58, 61, 62, 71–75, 77–80, 83, 84, 86, 90–99, 101, 105, 106, 116, 118, 119, 125, 127, 128, 137–141, 143, …

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

      “determine whether to institute an inter partes review under 35 U.S.C. § 314 and 37 C.F.R. § 42.4(a). Inter partes review may not be instituted unless “the information presented in the petition filed under section 311 and any response filed under section 313 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.” 35 U.S.C. § 314(a) (2024). “When instituting inter partes review, the Board will authorize the review to proceed on all of” slip op. at 2

    • Parallel petitionsDenied

      “states that “the Board finds it unlikely that circumstances will arise where three or more petitions by a petitioner with respect to a particular patent will be appropriate” and “the Board finds it unlikely that circumstances will arise where three or more petitions by a petitioner with respect to a particular patent will be appropriate.” Prelim. Resp. 5 (emphasis omitted, citing CTPG, 59). Patent Owner also argues that because Petitioner “has not and cannot justify” its four parallel petitions, the Board should deny institution in the instant proceeding. Prelim. Resp. 4–5; see also id. at 6 (“Petitioner fails to justify why all four Petitions, filed on the same day and challenging the same independent claims, are all necessary and appropriate.” (emphasis omitted)). Patent Owner also argues that (1) different prior art does not justify multiple petitions, (2) because Patent Owner “expressly stipulates that it will not ‘attempt to antedate or disqualify’ the prior art relied upon by Petitioner,” there are no potential priority issues, and (3) Petitioner is speculating as to the potential for disputes around claim construction. Id. at 6–7. Because this is the first ranked petition (Paper 3, 1–2), we do not exercise our discretion to deny this petition on the basis of multiple parallel petitions. Although Patent Owner has presented arguments why Petitioner may not be entitled to four petitions,14 Patent Owner does not persuasively argue why we should not institute on at least one of the ranked petitions.” slip op. at 13

    • BurdenDecided for petitioner

      “We are not persuaded by Patent Owner’s arguments. Unlike Adaptics, which involved potentially hundreds of distinct grounds challenging each claim due to the use of “and/or” in the catch-all ground (see Adaptics, Paper 20 at 19), the Petition only has, at most, two grounds for each claim (see Pet. 4). Nor has Patent Owner shown any evidence of improper “shadow grounds.” Although Patent Owner points to the size of the declaration testimony and the number of exhibits relied on by the declarants, Patent Owner has not pointed to any examples of alleged improper use of the testimony or exhibits. We decline to perform analysis that is missing from the Preliminary Response. See United States v. Dunkel, 927 F.2d 955, 956 (7th Cir. 1991) (“Judges are not like pigs, hunting for truffles buried in briefs.”); DeSilva 181 F.3d at 866–67 (“A brief must make all arguments accessible to the judges, rather than ask them to play archaeologist with the record.”). To be clear, we make no judgment on the propriety of the declarants’ testimony or the cited exhibits at this time. If appropriate, Patent Owner can challenge (1) the admissibility of the exhibits and testimony and (2) specific arguments as going beyond the grounds stated in the Petition during the trial. But simply including a significant amount of testimony and a number of supporting references is not, by itself, a reason to find that the particularly requirement is not met.” slip op. at 16

    • Skill levelSkill level petitioner adoptedDecided for petitioner

      “Petitioner argues that a person having ordinary skill in the art would have had “a degree in computer or electrical engineering, computer science, or a similar discipline, and two years of experience with the design and/or implementation of network-based content delivery systems and Internet advertising.” Pet. 6 (citing Ex. 1002 ¶¶ 144–49). Patent Owner does not address the level of ordinary skill in the art. See Prelim. Resp. Because Petitioner’s proposed level of ordinary skill in the art is consistent with the field of the invention of the ’260 patent and not disputed by Patent Owner, for purposes of this Decision, we adopt Petitioner’s formulation of the person having ordinary skill in the art.12” slip op. at 10

    Claim construction§ 103 obviousnessDiscretionary denialcites Phillips · KSR · Graham
    Patents in suitUS 7,861,260
  • PTAB · Oct 1, 2024 · IPR2024-00417 · APJ David Cotta · IPR · Institution

    The Board denied institution of review of claims 1, 3–11, 13–21, and 23–25 under § 314(a), finding the petitioner had not justified a second parallel petition.

    RulingsInstitution decision
    • Parallel petitionsInstitution denied discretionary otherDenied

      “proceedings.14 We give some weight to the argument that the first-ranked petition addresses an argument Patent Owner raised in a prior IPR proceeding. Less persuasive is Petitioner’s argument that the second-ranked petition relies on two references rather than one for the URL redirection. In this regard we note that: 1) we found that Petitioner established a reasonable likelihood of success in proving obviousness (including for the URL limitation) based on a two reference combination, 2) notwithstanding its reliance on a single reference for one of its grounds, the second-ranked petition is, like the first ranked petition, grounded in obviousness, and 3) although the second ranked petition includes one ground that relies on a single reference, it also includes three additional grounds challenging the exact same claim set based on three different combinations of prior art, making it difficult to determine how meaningful the difference in the number of references relied upon is. Moreover, Petitioner does not make any effort to explain why grounds relying on these two different approaches––i.e., single-reference URL redirection and two reference URL redirection––could not have been presented in a single petition. This omission detracts from Petitioner’s argument that multiple petitions are merited. This is particularly true given that: 1) Petitioner’s first ranked petition includes 16 grounds relying, in part, on various combinations of two primary references that Petitioner describes as “similar, though not identical” (Notice, 4) with two secondary references,” slip op. at 16

    Discretionary denial
    Patents in suitUS 8,775,249
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