- Luxottica Of America Inc. v. E-Vision Smart Optics, Inc.Adverse judgmentPTAB · Mar 31, 2026 · IPR2025-00216 · APJ John D Hamann · IPR · Adverse judgment
The Board granted the Patent Owner’s request for adverse judgment after disclaimer of claims 1–20.
RulingsAdverse judgment- Adverse judgmentAdverse judgmentGranted
“Our Rules provide that “[a] party may request judgment against itself at any time during a proceeding,” and that “[a]ctions construed to be a request for adverse judgment include: . . . [c]ancellation or disclaimer of a claim such that the party has no remaining claim in the trial.” 37 C.F.R. § 42.73(b)(2). Such is the case here. Thus, we grant Patent Owner’s unopposed Request for Adverse Judgment.” slip op. at 2
NonePatents in suitUS 11,487,138 - PTAB · Mar 25, 2026 · IPR2024-01380 · APJ Arthur M Peslak · IPR · Final written decision
The Board cancelled original claims 1–10 and granted substitute claims 11–19 because Petitioner did not prove claim 11 obvious over Torrence and Piepho.
RulingsFinal written decision- 112 supportGranted
“relied upon reasonably conveys to those skilled in the art that the inventor had possession of the claimed subject matter as of the filing date.” Ariad Pharms., Inc. v. Eli Lilly and Co., 598 F.3d 1336, 1351 (Fed. Cir. 2010) (en banc) (citing Vas-Cath Inc. v. Mahurkar, 935 F.2d 1555, 1562–63 (Fed. Cir. 1991)). “[T]he hallmark of written description is disclosure.” Id. “[T]he test requires an objective inquiry into the four corners of the specification from the perspective of a person of ordinary skill in the art. Based on that inquiry, the specification must describe an invention understandable to that skilled artisan and show that the inventor actually invented the invention claimed.” Id. “In order to satisfy the written description requirement, the disclosure as originally filed does not have to provide in haec verba support for the claimed subject matter at issue.” Yingbin-Nature (Guangdong) Wood Ind. Co., Ltd. v/ Int’l Trade Com’n, 535 F.3d 1322, 1334 (Fed. Cir. 2008). “[T]he level of detail required to satisfy the written description requirement varies depending on the nature and scope of the claims and on the complexity and predictability of the relevant technology.” Ariad, 598 F.3d at 1351 (citing Capon v. Eshhar, 418 F.3d 1349, 1357–58 (Fed. Cir. 2005)). “This inquiry . . . is a question of fact.” Id. (citing Ralston Purina Co. v. Far-Mar-Co, Inc., 772 F.2d 1570, 1575 (Fed. Cir. 1985)). Further, inventions in the mechanical and electrical-based arts usually involve predictable factors and can be more predictable than other fields, such as chemistry and biology. See In re Fisher, 427 F.2d 833, 839 (CCPA 1970);” slip op. at 13
- Skill levelSkill level petitioner adoptedDecided for petitioner
“C. Level of Ordinary Skill in the Art The level of ordinary skill in the art is “a prism or lens” through which we view the prior art and the claimed invention. Okajima v. Bourdeau, 261 F.3d 1350, 1355 (Fed. Cir. 2001). The person of ordinary skill in the art is a hypothetical person presumed to have known the relevant art at the time of the invention. In re GPAC Inc., 57 F.3d 1573, 1579 (Fed. Cir. 1995). In determining the level of ordinary skill in the art, we may consider certain factors, including: “(1) the educational level of the inventor; (2) type of problems encountered in the art; (3) prior art solutions to those problems; (4) rapidity with which innovations are made; (5) sophistication of the technology; and (6) educational level of active workers in the field.” Best Daiichi Sankyo Co. v. Apotex, Inc., 501 F.3d 1254, 1256 (Fed. Cir. 2007)).” slip op. at 15
- Claim Construction › Threshold & procedure › Whether a term needs construction (O2 Micro)No construction neededOther
“D. Claim Construction We determine that no express construction of any claim term is necessary for purposes of this Decision. See Nidec Motor Corp. v. Zhongshan Broad Ocean Motor Co., 868 F.3d 1013, 1017 (Fed. Cir. 2017) (noting that “we need only construe terms ‘that are in controversy, and only to the extent necessary to resolve the controversy’”) (citing Vivid Techs., Inc. v. Am. Sci. & Eng’g, Inc., 200 F.3d 795, 803 (Fed. Cir. 1999)).” slip op. at 16
- Obviousness (§103) › Motivation to combine / reasonable expectation of successMotivation not foundReasonable expectation not foundNot shown unpatentable
“[c]ombin[e] the tapered region of Piepho with the shaft of Torrence, the tapered region would extend from an uppermost extremity of the shaft.” RMTA Opp. 9. But, Petitioner concedes that neither reference discloses a tapered region extending from the uppermost extremity. Petitioner argues that Torrence’s shaft is straight (Amended RMTA Sur-reply 9) and that “[t]he tapered region of Piepho does not extend to the extreme end of the shaft.” RMTA Opp. 11 (emphasis added). Because neither Torrence nor Piepho discloses a shaft with a tapered region that “extends from an uppermost extremity of the shaft,” we find that the combination of Torrence and Piepho does not teach limitation 11[a]. We now analyze whether Petitioner provides reasoning with a rational underpinning why a person of ordinary skill in the art would have been motivated to modify Torrence with Piepho to extend Torrence’s taper from the upper extremity of its shaft. slip op. at 22
Claim construction§ 103 obviousnesscites KSR · GrahamPatents in suitUS 9,827,568 - PTAB · Mar 17, 2026 · IPR2025-01487 · APJ John A Squires · IPR · Director review
The Director instituted review of claims 1–21 and bound Petitioner to its district court construction of “clock output signal” for claims 4, 5, and 19.
RulingsDirector review decision- Director reviewDirector review, grantedGranted
“Accordingly, it is: ORDERED that, pursuant to 35 U.S.C. § 314(a), an inter partes review of claims 1–21 of the ’381 patent is instituted; FURTHER ORDERED that Petitioner shall be bound by its proposed district court construction of the term “clock output signal” in its analysis of claims 4, 5, and 19 of the ’381 patent; and” slip op. at 4
- PTAB / AIA Trials › Institution threshold (reasonable likelihood / more likely than not)InstitutedInstituted
“Accordingly, it is: ORDERED that, pursuant to 35 U.S.C. § 314(a), an inter partes review of claims 1–21 of the ’381 patent is instituted;” slip op. at 4
- Prior constructionTerm construed petitioner constructionDecided for patent owner
“positions in the district court that are inconsistent with those presented in the Petition and fails to sufficiently explain why those different positions are warranted. Prelim. Resp. 3–4, 9 (citing Revvo Techs., Inc. v. Cerebrum Sensor Techs., Inc., IPR2025-00632, Paper 20 (Director Nov. 3, 2025) (precedential) (“Revvo”)). In particular, Patent Owner notes that in District Court, Petitioner has proposed a construction of the term “clock output signal” in dependent claims 4, 5, and 19 as being “a periodic signal that synchronizes system operations.” Id. at 9 (quoting Ex. 2007, 12). In the Petition, however, Petitioner contends that “no claim terms require a formal construction for purposes of addressing the grounds in this Petition.” Pet. 2.” slip op. at 2
Claim constructionPatents in suitUS 9,972,381 - Samsung Electronics Co., Ltd. / Samsung Electronics America, Inc. et al. v. Harbor Island Dynamic, LLCAll claims unpatentablePTAB · Mar 16, 2026 · IPR2025-00954 · APJ Gregg I Anderson · IPR · Final written decision
Claims 3 and 8–19 are unpatentable: claim 3 is anticipated by Yu and obvious over Okashita, Okashita and Yu, and Burgener and Okashita; claims 8–19 are obvious over Burgener and Okashita, with or without Yu.
RulingsFinal written decision- PTAB / AIA Trials › Motions to amend / substitute claimsMotion to amend, grantedGranted
“ORDER For the foregoing reasons, ORDERED that Patent Owner’s Unopposed Motion to Amend (Paper 19) is granted, and claims 1, 2, and 4–7 are canceled;” slip op. at 37
- Skill levelSkill level petitioner adoptedDecided for petitioner
“Patent Owner proposes a slightly different level of ordinary skill, arguing that a bachelor’s degree, not a master’s degree, is all that is required because that is the “target audience for the ’886 Patent.” PO Resp. 11. Patent Owner does not otherwise dispute Petitioner’s proposed level of skill. Id. We used Petitioner’s proposed definition in the Institution Decision. Inst. Dec. 13. Neither party argues any issue as dependent on the level of ordinary skill or the differences between the proposals. Accordingly, the issues here are not dependent on the level of ordinary skill and the result is the same regardless of which definition is adopted. On this record, there is no reason to change from Petitioner’s definition used in the Institution Decision.” slip op. at 7
- Claim Construction › Threshold & procedure › Whether a term needs construction (O2 Micro)No construction neededOther
“transistors” as a term that might require construction during trial. Inst. Dec. 17–18. At the hearing, the Petitioner argued that “cascaded transistors” means “[ar]ranged in a series of or in succession of stages so that each stage derives from or acts upon the product of the preceding [transistor]” and that there is no dispute that the limitation is taught by the prior art. Tr. 9:15–22. Patent Owner takes no position as to whether or not the prior art discloses “cascaded transistors.” Id. at 33:13–21 (“For the remainder of this proceeding, post institution, we have not taken any position regarding the scope of the cascaded transistors or the disclosure of the cascaded transistors in any of the prior art. We have not disputed that.”). Because Patent Owner takes no position on the issue, there is no dispute that “cascaded transistors” are shown in the prior art, construction is not necessary. Realtime, 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. original)). 2. “isolated island” Patent Owner disputes Petitioner’s contention that the prior art teaches or suggests claim 3’s recitation of “said plurality of cascaded transistors is situated within an isolated island.” Pet. 35–36; PO Resp. 16–17. Although the parties dispute whether an “isolated island” is shown in the prior art, neither party proposes a construction for the term “isolated island.” We agree that the arguments presented do not require construction of “isolated island.” The issues can be determined on the plain meaning of the term in view of the arguments made. See Section II.D below.” slip op. at 8
- Obviousness (§103) › Analogous artAnalogous artDecided for petitioner
“We find that Petitioner has sufficiently shown Yu is analogous art to Okashita. Both references are directed to the manufacture of semiconductors, which we find to be the field of endeavor. Ex. 1004, 1:47– 58; Ex. 1005, 1:16–26. More specifically, we agree with Petitioner and find that both references are in the same field of endeavor because they relate to SOI configuration. Pet. Reply 6 (citing Pet. 7–8, 39–40; Ex. 1002 ¶¶ 77–80, 90–91). Because we find the references relied upon are in the same field of endeavor, we need not reach whether they are reasonably pertinent to the problem faced by the inventor.” slip op. at 21
Patent outcomesUS 7,745,886 unpatentableClaim construction§ 102 anticipation§ 103 obviousnesscites Phillips · KSR · GrahamPatents in suitUS 7,745,886 - Samsung Electronics Co., Ltd. / Samsung Electronics America, Inc. et al. v. Harbor Island Dynamic, LLCAll claims unpatentablePTAB · Mar 16, 2026 · IPR2024-01402 · APJ Gregg I Anderson · IPR · Final written decision
The Board held claims 3 and 8–19 unpatentable: claim 3 was anticipated by Yu and obvious on the stated grounds, and claims 3 and 8–19 were obvious over Burgener and Okashita, with or without Yu.
RulingsFinal written decision- PTAB / AIA Trials › Motions to amend / substitute claimsMotion to amend, grantedGranted
“Inc. (“Petitioner”) filed a Petition (Paper 1, “Pet.”) requesting an inter partes review of claims 1–19 of U.S. Patent No. 7,745,886 B2 (Ex. 1001, “the ’886 patent”). Petitioner filed a Declaration of Dr. Scott E. Thompson, Ph.D., in support of the Petition. Ex. 1002 (“Thompson Dec.”). Harbor Island Dynamic, LLC (“Patent Owner”) filed a Preliminary Response. Paper 7 (“Prelim. Resp.”). On April 4, 2025, we instituted this inter partes review as to the Challenged Claims and all grounds presented in the Petition. Paper 9 (“Inst. Dec.”). Following institution, Patent Owner filed a Response to the Petition (“PO Resp.”) limited to the patentability of the challenged claims. Paper 18. In support of the Patent Owner’s Response, Patent Owner filed a Declaration of John Berg. Ex. 2006. Patent Owner also filed an Unopposed Motion to Amend, cancelling claims 1, 2, and 4–7. Paper 19 (“Mot.”). We grant the motion. This proceeding is therefore limited to the patentability of claims 3 and 8–19 (“challenged claims”).” slip op. at 2
- Skill levelSkill level petitioner adoptedDecided for petitioner
“Patent Owner proposes a slightly different level of ordinary skill, arguing that a bachelor’s degree, not a master’s degree, is all that is required because that is the “target audience for the ’886 Patent.” PO Resp. 11. Patent Owner does not otherwise dispute Petitioner’s proposed level of skill. Id. We used Petitioner’s proposed definition in the Institution Decision. Inst. Dec. 13. Neither party argues any issue as dependent on the level of ordinary skill or the differences between the proposals. Accordingly, the issues here are not dependent on the level of ordinary skill and the result is the same regardless of which definition is adopted. On this record, there is no reason to change from Petitioner’s definition used in the Institution Decision.” slip op. at 7
- Claim Construction › Threshold & procedure › Whether a term needs construction (O2 Micro)No construction neededOther
“transistors” as a term that might require construction during trial. Inst. Dec. 17–18. At the hearing, the Petitioner argued that “cascaded transistors” means “[ar]ranged in a series of or in succession of stages so that each stage derives from or acts upon the product of the preceding [transistor]” and that there is no dispute that the limitation is taught by the prior art. Tr. 9:15–22. Patent Owner takes no position as to whether or not the prior art discloses “cascaded transistors.” Id. at 33:13–21 (“For the remainder of this proceeding, post institution, we have not taken any position regarding the scope of the cascaded transistors or the disclosure of the cascaded transistors in any of the prior art. We have not disputed that.”). Because Patent Owner takes no position on the issue, there is no dispute that “cascaded transistors” are shown in the prior art, construction is not necessary. Realtime, 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. original)). 2. “isolated island” Patent Owner disputes Petitioner’s contention that the prior art teaches or suggests claim 3’s recitation of “said plurality of cascaded transistors is situated within an isolated island.” Pet. 35–36; PO Resp. 16–17. Although the parties dispute whether an “isolated island” is shown in the prior art, neither party proposes a construction for the term “isolated island.” We agree that the arguments presented do not require construction of “isolated island.” The issues can be determined on the plain meaning of the term in view of the arguments made. See Section II.D below.” slip op. at 8
- Obviousness (§103) › Motivation to combine / reasonable expectation of successAnalogous artMotivation foundUnpatentable
“We find that Petitioner has sufficiently shown Yu is analogous art to Okashita. Both references are directed to the manufacture of semiconductors, which we find to be the field of endeavor. Ex. 1004, 1:47– 58; Ex. 1005, 1:16–26. More specifically, we agree with Petitioner and find that both references are in the same field of endeavor because they relate to SOI configuration. Pet. Reply 6 (citing Pet. 7–8, 39–40; Ex. 1002 ¶¶ 77–80, 90–91). Because we find the references relied upon are in the same field of endeavor, we need not reach whether they are reasonably pertinent to the problem faced by the inventor. We also find that Petitioner has shown rational underpinnings for combining Okashita and Yu. Pet. 43–44. That the references have differences is not the test. Rather, the test is whether a person of ordinary skill in the art would have had motivation to combine them. We find there is sufficient motivation. Id. at 43 (citing Ex. 1005, 2:4–17; Ex. 1002 ¶¶ 177– 178). 3. Conclusion on Ground 3 Patent Owner does not argue any other reason that Ground 3 has not been sufficiently shown. Based on the full record, we determine that Okashita and Yu teach or suggest all the limitations of claim 3 and that one of ordinary skill in the art would have combined the references in the manner asserted with a reasonable expectation of success. We thus determine that Petitioner has established by a preponderance of the evidence that claim 3 would have been obvious over the combination of Okashita and Yu.” slip op. at 21
Patent outcomesUS 7,745,886 unpatentableClaim construction§ 102 anticipation§ 103 obviousnesscites Phillips · KSR · GrahamPatents in suitUS 7,745,886 - Cisco Systems, Inc. v. Dynamic Mesh Networks, Inc. D/B/A MeshdynamicsInstitution deniedPTAB · Mar 3, 2026 · IPR2025-01303 · APJ John A Squires · IPR · Director review
Director Review was granted, the institution determination was vacated, and institution was denied because the Patent Owner had disclaimed the entire patent before institution.
RulingsDirector review decision- Director reviewDirector review, grantedGranted
“Accordingly, it is: ORDERED that Director Review is granted; FURTHER ORDERED that the determination in the Notice granting institution of inter partes review (Paper 11) is vacated; and FURTHER ORDERED that the Petition is denied, and no trial is instituted.” slip op. at 3
- Adverse judgmentOther
“Patent Owner filed a statutory disclaimer of the entire term of the challenged patent before the Notice was entered. See Ex. 2011. Although 37 C.F.R. § 42.73(b) permits the Office to enter an adverse judgment when a patent owner cancels all claims at issue, denying institution under these circumstances is a more efficient use of the Office’s resources. Denying institution also encourages similarly situated patent owners to file a disclaimer prior to institution. As such, the appropriate course of action is to vacate the determination in the Notice and deny institution.” slip op. at 2
NonePatents in suitUS 11,368,537 - Carbyne, Inc. v. Tritech Software SystemsInstitution deniedPTAB · Feb 19, 2026 · IPR2025-00959 · APJ John A Squires · IPR · Director review
Director Review was granted, institution was vacated, and IPR was denied because Petitioner did not adequately explain its inconsistent claim-construction positions.
RulingsDirector review decision- Director reviewDirector review, grantedGranted
“Accordingly, it is: ORDERED that Director Review is granted; FURTHER ORDERED that the Decision granting institution of inter partes review (Paper 12) is vacated; and” slip op. at 4
- PTAB / AIA Trials › Institution threshold (reasonable likelihood / more likely than not)Institution denied discretionary otherInstitution denied
“taking different claim construction positions, “when a petitioner takes alternative positions before the Board and a district court, that petitioner should, at a minimum, explain why alternative positions are warranted.” Revvo, Paper 20 at 3–4 (citing Cambridge Mobile Telematics, Inc. v. Sfara, Inc., IPR2024-00952, Paper 12 at 8–9 (PTAB Dec. 13, 2024) (informative)). After considering the parties’ filings, I conclude that Petitioner fails to adequately explain why it is proposing different claim constructions before the Board and the district court.” slip op. at 3
Discretionary denial - Infineon Technologies Americas Corp. v. Mosaid Technologies Inc.Institution deniedPTAB · Feb 19, 2026 · IPR2025-01171 · APJ John A Squires · IPR · Director review
Director Review was granted, the institution decision was vacated, and institution was denied because Petitioner did not adequately explain its differing claim construction positions.
RulingsDirector review decision- Director reviewDirector review, grantedGranted
“After considering the parties’ filings, I conclude that Petitioner fails to adequately explain why it is proposing different claim constructions before the Board and the district court. The Petition offers no explanation, stating only that “no claim terms require a formal construction for purposes of addressing the grounds in this Petition.” See Pet. 4. The Petition cites to three different district court decisions construing the challenged claims but fails to address constructions from any of those decisions or provide an explanation for claim construction positions that Petitioner has taken in district court litigation that differ from those prior decisions and from the position that Petitioner takes before the Board. Id. (citing Exs. 1011, 1012, 1013). In its response to Patent Owner’s Director Review request, Petitioner argues that its different positions should be excused because it prepared its Petition without the benefit of Patent Owner’s preliminary infringement contentions. DR Response 3. I have rejected similar arguments as detracting from the Office’s goal of “providing greater predictability and certainty in the patent system,” Revvo I, Paper 20 at 4–5 (quoting Changes to the Claim Construction Standard for Interpreting Claims in Trial Proceedings Before the Patent Trial and Appeal Board, 83 Fed. Reg. 51340, 51,342–43 (Oct. 11, 2018)), and do so here as well. Petitioner further offers certain stipulations, including that if the district court later determines that any of the challenged claims are indefinite, Petitioner will move to withdraw those claims from this proceeding. DR Response 5. I have recently rejected such a “wait and see” approach. See Revvo Techs., Inc. v. Cerebrum Sensor Techs., Inc., IPR2025- 00632, Paper 36 at 4 (Director Jan. 26, 2026). As such, the appropriate course of action is to vacate the Decision and deny institution.2” slip op. at 3
- Other 314aInstitution denied discretionary otherInstitution denied
“adequately explain why it is proposing different claim constructions before the Board and the district court. The Petition offers no explanation, stating only that “no claim terms require a formal construction for purposes of addressing the grounds in this Petition.” See Pet. 4. The Petition cites to three different district court decisions construing the challenged claims but fails to address constructions from any of those decisions or provide an explanation for claim construction positions that Petitioner has taken in district court litigation that differ from those prior decisions and from the position that Petitioner takes before the Board. Id. (citing Exs. 1011, 1012, 1013). In its response to Patent Owner’s Director Review request, Petitioner argues that its different positions should be excused because it prepared its Petition without the benefit of Patent Owner’s preliminary infringement contentions. DR Response 3. I have rejected similar arguments as detracting from the Office’s goal of “providing greater predictability and certainty in the patent system,” Revvo I, Paper 20 at 4–5 (quoting Changes to the Claim Construction Standard for Interpreting Claims in Trial Proceedings Before the Patent Trial and Appeal Board, 83 Fed. Reg. 51340, 51,342–43 (Oct. 11, 2018)), and do so here as well. Petitioner further offers certain stipulations, including that if the district court later determines that any of the challenged claims are indefinite, Petitioner will move to withdraw those claims from this proceeding. DR Response 5. I have recently rejected such a “wait and see” approach. See Revvo Techs., Inc. v. Cerebrum Sensor Techs., Inc., IPR2025- 00632, Paper 36 at 4 (Director Jan. 26, 2026). As such, the appropriate course of action is to vacate the Decision and deny institution.2” slip op. at 3
Discretionary denialPatents in suitUS 7,051,306 - Axion Biosystems, Inc. v. Agilent Technologies, Inc.No claims unpatentablePTAB · Feb 2, 2026 · IPR2024-01467 · APJ David Cotta · IPR · Final written decision
Claims 1–8 and 11–15 were not shown unpatentable over Xu-752 and Jones because the proposed combination did not establish obvious millisecond time resolution.
RulingsFinal written decision- Skill levelSkill level petitioner adoptedDecided for petitioner
“B. Level of Ordinary Skill in the Art Petitioner contends a person of ordinary skill in the art (“POSA”) as of May 2009 “would have had a B.S. in electrical/mechanical/biomedical engineering or biological science, or a related field, and approximately 2 years of relevant experience or equivalent study in systems and methods for bioanalysis of cells.” Pet. 14 (citing Ex. 1003 ¶¶ 23–25). Patent Owner adopts this definition for purposes of this proceeding. PO Resp. 9 (citing Ex. 2009 ¶ 19). We find Petitioner’s description of the level of ordinary skill in the art to be consistent with the level of skill reflected in the ’508 patent and in the prior art of record. Accordingly, we apply Petitioner’s definition in this decision.” slip op. at 7
- Claim Construction › Intrinsic evidence (Phillips canons) › Lexicography (patentee as own lexicographer)Term construed petitioner constructionDecided for petitioner
“As used herein, “impedance measurement at millisecond time resolution” refers to the ability to perform a series of at least two consecutive impedance measurements within milliseconds of one another for each and every well of the system where each well is associated with an electrode array for impedance measurement. In each instance the time between two consecutive impedance measurements are less than 300 milliseconds from one another. Id. at 10:8–15. There does not appear to be any dispute as to the definitional nature of the first sentence in the passage above. That is, the parties agree that millisecond time resolution should be construed to mean: “the time between two consecutive impedance measurements for each and every well being evaluated in the claimed apparatus or system.” PO Resp. 15 (proposing construction); Pet. Reply. 23 (“Axion also agrees that the term ‘millisecond time resolution’ is ‘the time between two consecutive impedance measurements for each and every well being evaluated in the claimed apparatus or system.’”). The parties also agree that we do not need to determine whether the time interval between two consecutive impedance measurements is less than 300 milliseconds, as set forth in the definition portion of the specification, or whether it can be met by some other time interval, as suggested by other portions of the specification. See e.g., Ex. 1001, 23:49–55 (explaining that “[i]n some embodiments 500 millisecond time resolution is sufficient”), 24:37–39 (similar); PO Resp. 15 (arguing that “the distinction between 300 milliseconds and 500 milliseconds is immaterial to the dispute in this IPR because Jones teaches a 1.5 second update period, thus at least three times longer than the 500 milliseconds formulation”); Pet. Reply 23–24 (section headed “[Petitioner] Agrees That, In This IPR, The 300 Versus 500 Milliseconds Distinction is Immaterial To Addressing the Unpatentability of the Challenged Claims”), see also, Pet. Reply 24–26 (asserting that the claims are indefinite because it is not clear whether they require a 300 or a 500 millisecond time interval, but arguing that “the claims’ unpatentability can be determined without resolving the 300 versus 500 milliseconds indefiniteness issue”). We agree with the parties that “millisecond time resolution” should be construed to mean: “the time between two consecutive impedance measurements for each and every well being evaluated in the claimed apparatus or system.” PO Resp. 15; Pet. Reply. 23. We further agree that resolution of this case does not require that we determine whether the period between two consecutive impedance measurements is less than 300 or less than 500 milliseconds because Petitioner has not carried its burden under either time interval.” slip op. at 7
- Expert testimonyPetitioner expert discountedDecided for patent owner
“Ex. 1003 ¶ 179. But Dr. Kim does not cite to any additional supporting evidence or provide any technical reasoning to support his statements. The notion that one can reduce the time between measurements by, e.g., reducing the number of frequencies measured, has intuitive appeal and appears mathematically correct. However, the absence of technical reasoning and supporting evidence diminishes the persuasiveness of Dr. Kim’s testimony that the POSA would made such modifications to reduce the time between measurements. Dr. Kim does provide some technical reasoning in connection with his discussion of eliminating all reference channels as a way to get the time resolution down to the levels required by, e.g., claim 14, which recites a millisecond time resolution of “less than 5 milliseconds.” See e.g., Ex. 1003 ¶ 172 (“A POSA seeking to study biological cell phenomena occurring on the order of a few milliseconds would have recognized that after measuring the reference network channels at the start, the reference network channels would not need measured again for some time, e.g., because temperature and other drift factors do not change appreciably on a millisecond time scale.”). However, even if we were to credit this testimony, Dr. Kim still lacks support and reasoning for the selection of the other parameters in his noreference-channel calculations. See, e.g., id. ¶ 173 (positing, but not providing technical reasoning for using, a no-reference-channel impedance system with 16 wells, a single 10kHz measurement frequency, and 16 daughter boards that measure simultaneously rather than sequentially).” slip op. at 29
- Obviousness (§103) › Motivation to combine / reasonable expectation of success › HindsightMotivation not foundNot shown unpatentableNot shown unpatentable
“Given that Jones’s only exemplified embodiment targets a 1.5 second update period, that Jones does not suggest reducing the update period, and that much of Jones’s focus is on benefits other than speed of measurement, Jones’s impedance analyzer seems an unlikely choice for a POSA seeking to take measurements having millisecond time resolution. Put another way, we find no persuasive non-hindsight reason that supports Petitioner’s assertion that the POSA would have sought to apply Jones’s impedance analyzer to Xu-752’s system in order to take measurements in millisecond time resolution.” slip op. at 22
Patent outcomesUS 11,906,508 not shown unpatentableClaim construction§ 103 obviousnesscites KSR · GrahamPatents in suitUS 11,906,508 - Ipr2025-01374InstitutedPTAB · Jan 27, 2026 · IPR2025-01374 · APJ John A Squires · IPR · Director review
The Director granted institution of IPR2025-01374 after finding the petition met the merits threshold and no other non-discretionary consideration warranted denial.
RulingsDirector review decision- Director reviewDirector review, grantedGranted
“Pursuant to 35 U.S.C. § 314(a) and § 324(a), after review of the merits, the petitioner has shown a reasonable likelihood of prevailing with respect to at least one of the claims challenged in the petition, or that it is more likely than not that at least one of the claims challenged in the petition is unpatentable, as applicable, and no other non-discretionary considerations warrant denial of institution. Accordingly, institution of inter partes review or post-grant review is granted in the following proceedings: IPR2025-01367 IPR2025-01391 PGR2025-00070 IPR2025-01374” slip op. at 2
- PTAB / AIA Trials › Institution threshold (reasonable likelihood / more likely than not)InstitutedInstituted
“merits, the petitioner has shown a reasonable likelihood of prevailing with respect to at least one of the claims challenged in the petition, or that it is more likely than not that at least one of the claims challenged in the petition is unpatentable, as applicable, and no other non-discretionary considerations warrant denial of institution. Accordingly, institution of inter partes review or post-grant review is granted in the following proceedings: IPR2025-01367 IPR2025-01391 PGR2025-00070 IPR2025-01374” slip op. at 2
NonePatents in suitUS 11,738,124
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.