• Prime Time Toys LLC / Prime Time Toys Ltd. et al. v. Spin Master, Inc.No claims unpatentable
  PTAB · Oct 10, 2025 · IPR2023-01339 · APJ Brent M Dougal · IPR · Final written decision

  Claims 4–9, 12, and 14 were not shown unpatentable because Petitioner failed to establish a reason to combine Peev and Spitballs.

  RulingsFinal written decision

  • Skill levelSkill level patent owner adoptedOther

    “We agree that the three definitions are similar. The parties do not advocate for any particular definition. We also determine that no distinction between the definitions is material to this Decision. As such, we do not repeat all three definitions and accept Patent Owner’s definition as most closely fitting the legal requirements: a bachelor’s degree in mechanical engineering, industrial design, or equivalent, with at least one year of relevant experience designing projectile launching systems but would also be a member of a team, which would include a person with a bachelor’s in materials science, chemistry, or equivalent (e.g., chemical engineering), or has at least one year experience working with materials for use in consumer products equivalent work experience may substitute for educational experience, and vice versa” slip op. at 7

  • Claim Construction › Threshold & procedure › Whether a term needs construction (O2 Micro)No construction neededOther

    “Neither Petitioner or Patent Owner advocate for the construction of any particular claim term. Pet. 20–21; see generally PO Resp. We determine that no terms require 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 the controversy.’” (quoting Vivid Techs., Inc. v. Am. Sci. & Eng’g, Inc., 200 F.3d 795, 803 (Fed. Cir. 1999))).” slip op. at 8

  • Obviousness (§103) › Motivation to combine / reasonable expectation of successNot shown unpatentableMotivation not foundNot shown unpatentable

    “conducting this kind of basic muzzle energy analysis—a conventional, even industry standard technique at the time—would not have concluded that the polymer balls that Spitballs teaches are a safer form of ammunition simply because they are softer than lightweight airsoft rounds,” because the record supports it. Ex. 2015 ¶ 59. slip op. at 12

  • Obviousness (§103) › Objective indicia / secondary considerationsNot reached

    “that softer ammunition was a possible solution and that Vat19 shows Spitballs exploding on contact with a person without harm. Reply 28–30 (citing Paper 12, 16–17; PO Resp. 63). However, we agree with Patent Owner, that Kim and Vat19 do not disclose all of the limitations of the claims. PO Resp. 61–62; PO Sur-reply 26; Ex. 1004, 302:7–22; Ex. 1022, 8, 9; Ex. 1024; Ex. 2007, 100 (ALJ concluding “there is no disclosure that [Kim’s] gel material is a SAP”); Ex. 2015 ¶¶ 236–239. Petitioner makes no assertions to the contrary. See Pet. 57–60; Reply 28–30. As discussed above, the full record does not support that one of ordinary skill in the art would have combined Peev and Spitballs for the reasons asserted by Petitioner. Petitioner’s insufficient evidence of simultaneous invention does not overcome that deficiency.” slip op. at 21

  Patent outcomesUS 8,640,683 not shown unpatentable
  Claim construction§ 103 obviousnesscites Graham
  Patents in suitUS 8,640,683
• Prime Time Toys LLC / Prime Time Toys Ltd. et al. v. Spin Master, Inc.No claims unpatentable
  PTAB · Oct 10, 2025 · IPR2023-01348 · APJ Neil T Powell · IPR · Final written decision

  The Board held claims 2, 3, 5–15, 17, and 19–21 not shown unpatentable over Spitballs and Peev because the evidence did not establish an obvious reason to use the SAP ammunition in Peev’s airsoft gun.

  RulingsFinal written decision

  • Adverse judgmentAdverse judgmentOther

    “After the Petition was filed, Patent Owner disclaimed independent claim 1 and dependent claim 4 of the ’282 patent. Prelim. Resp. 26; Ex. 2013. Accordingly, we need not reach Petitioner’s challenges to claims 1 and 4. E.g., 37 C.F.R. § 42.107(e). Thus, the remaining challenged claims are claims 2, 3, 5–15, 17, and 19–21.” slip op. at 2

  • Skill levelSkill level board ownOther

    “that were proposed in the ITC proceeding as “similar” and noting the ITC ALJ’s determination that “all of the proposals are appropriate,” Petitioner does not argue for the application of any particular level of skill in the art in this proceeding. Pet. 20 (citing Ex. 1015, 8). We too find the definitions advanced in the ITC proceeding similar. Indeed, any differences between the definitions do not rise to a level that would affect our analysis of whether the Petition and associated evidence are sufficiently persuasive for purposes of institution. In our view, the foregoing level of ordinary skill in the art proposed by Patent Owner in the ITC proceeding best fits the legal requirements. Accordingly, we adopt and apply that level of ordinary skill in the art in our analysis of the merits.” slip op. at 10

  • Claim Construction › Threshold & procedure › Whether a term needs construction (O2 Micro)No construction neededOther

    “The parties’ arguments and evidence do not raise any issues that necessitate an express claim construction in order to determine whether Petitioner has demonstrated by a preponderance of the evidence the unpatentability of at least one of the challenged claims. Accordingly, we need not and do not expressly construe any claim language. See Nidec Motor Corp. v. Zhongshan Broad Ocean Motor Co., 868 F.3d 1013, 1017 (Fed. Cir. 2017) (holding that only claim terms in controversy need to be construed, 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 11

  • Expert testimonyPetitioner expert discountedPatent owner expert creditedDecided for patent owner

    “success in an airsoft gun such as Peev, including rubber, cork, foam, and soft plastics, such as SAPs.” Ex. 1016 ¶ 78; Pet. 37. For multiple reasons, this testimony fails to support Petitioner’s suggestion that using SAP ammunition in Peev’s airsoft gun was among a finite number of identified, predictable solutions. For example, because Mr. Delman does not support this testimony with objective supporting evidence, it is not entitled to persuasive weight in Petitioner’s favor. Ex. 1016 ¶ 78; 37 C.F.R. § 42.65(a) (“Expert testimony that does not disclose the underlying facts or data on which the opinion is based is entitled to little or no weight.”). Additionally, even if Mr. Delman substantiated his view that an ordinarily skilled artisan “could have considered” SAPs as airsoft ammunition, that would not persuade us that SAPs were identified, predictable solutions for airsoft ammunition.” slip op. at 17

  Patent outcomesUS 8,371,282 not shown unpatentable
  Claim construction§ 103 obviousnesscites Phillips · KSR · Graham
  Patents in suitUS 8,371,282
• Prime Time Toys LLC / Prime Time Toys Ltd. et al. v. Spin Master, Inc.No claims unpatentable
  PTAB · Oct 10, 2025 · IPR2023-01461 · APJ Hyun J Jung · IPR · Final written decision

  Claims 1, 2, 13, and 15–20 were not shown unpatentable because Petitioner failed to establish a sufficient motivation to combine Peev and Spitballs, including with Moorhouse.

  RulingsFinal written decision

  • Skill levelSkill level patent owner adoptedDecided for patent owner

    “The parties do not address the adopted level of ordinary skill in the art. See PO Resp.; Pet. Reply; PO Sur-reply. Based on the full record, we maintain and affirm that one of ordinary skill in the art would have had: a bachelor’s degree in mechanical engineering, industrial design, or equivalent, with at least one year of relevant experience designing projectile launching systems but would also be a member of a team, which would include a person with a chemical engineering), or has at least one year experience working with materials for use in consumer products and that “equivalent work experience may substitute for educational experience, and vice versa.” Pet. 21–22 (quoting Ex. 1015, 7–8); see also Ex. 1016 ¶ 55 (stating that “Patent Owner’s and Petitioner’s definitions of the [person of ordinary skill in the art] are similar, and my opinions in this Declaration would not change if I used Patent Owner’s definition of the [person of ordinary skill in the art] rather than Petitioner’s definition”). We find that the proposed level of ordinary skill in the art is consistent with the ’255 patent and the asserted prior art.” slip op. at 7

  • Claim Construction › Threshold & procedure › Whether a term needs construction (O2 Micro)No construction neededOther

    “Neither Petitioner nor Patent Owner proposes any interpretation for any claim term. Pet. 23; see PO Resp. Petitioner notes that the ALJ in the ITC proceeding construed two terms used in the ’282 and ’683 patents, specifically “super absorbent polymer” and “a firing mechanism that directly applies a force to the ammunition.” Pet. 23 (citing Ex. 1015, 12, 14). Based on the full record, we determine that no term requires express construction to resolve the parties’ dispute. See Realtime Data, LLC v. Iancu, 912 F.3d 1368, 1375 (Fed. Cir. 2019) (“The Board is required to 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 8

  • Expert testimonyPetitioner expert discountedMixed

    “we give little weight to the opinion of Dr. Courtney on whether Spitballs would have been considered liquid filled by one of ordinary skill in the art. Pet. Reply 15–16; PO Sur-reply 18; Ex. 1037 ¶ 55; Ex. 2121, 61:12–13; see also PO Sur-reply 14–15 (arguing that Dr. Courtney does not meet the adopted level of ordinary skill in the art). We agree with Patent Owner that Petitioner’s list of “rubber, cork, foam, and soft plastics, such as SAPs” “does not exclude all of the other types of materials Petitioner failed to address—e.g., the gelatin materials used to make paintballs.” PO Resp. 24 (citing Ex. 2117, 1). The “openended” list “has no meaningful evidentiary support” because the cited paragraphs from its declaration “make no reference at all to potential airsoft ammunition.” Pet. 38; PO Resp. 24; Ex. 1016 ¶ 77; Ex. 1017 ¶¶ 36–39, 46– 48. Petitioner’s declarant Dr. Reitman also “acknowledged that airsoft considerations are beyond the scope of her testimony.” Ex. 2030, 117:17– 118:20. We agree with Patent Owner that Petitioner’s list would include “countless distinct polymers.” PO Resp. 25; Ex. 2120, 27–28.” slip op. at 21

  • Obviousness (§103) › Motivation to combine / reasonable expectation of successMotivation not foundNot shown unpatentable

    “In other words, Petitioner does not squarely address the testimonial evidence that the softness of Spitballs would not have been equated with safety, because of its higher weight and kinetic energy. Ex. 2015 ¶¶ 44–55. We agree with Patent Owner that Petitioner does not assert fragmentation and deformation would have overcome the greater kinetic energy of the heavier Spitballs, and that Petitioner’s declarant admitted such calculation was not done. PO Sur-reply 7 (citing Ex. 2121, 48:11–49:7); Ex. 2121, 48:11–49:7 (Petitioner’s declarant testifying that calculations of how much kinetic energy is absorbed when Spitballs bounce or explode were not done). Petitioner’s declarant also identified that back splatter can create an additional safety concern. Ex. 2121, 101:14–104:4. We agree with Patent Owner that Petitioner failed to discuss the deformation and fragmentation of Spitballs in its Petition and declarations. PO Sur-reply 6 (citing Pet. Reply 10–11; Ex. 1037 ¶ 43). We also agree that Petitioner did not explain how one of ordinary skill in the art could have reliably assessed the safety of Spitballs and airsoft rounds. Id.; see also Ex. 2121, 47:1–48:10 (Petitioner’s declarant testifying that experimentation would be the best way to quantify how much kinetic energy is absorbed through deformation and fragmentation of a given projectile). focused on the mass and diameter calculations provided by Petitioner’s declarant, and Petitioner has the burden to analyze a projectile other than the one disclosed in Spitballs, not Patent Owner. PO Sur-reply 10–11 (citing Pet. Reply 13; Ex. 1017 ¶ 67; Ex. 2015 ¶ 59). Petitioner failed to do such an analysis of a 6mm Spitball or SAP projectile. Regarding Petitioner’s reliance on deposition testimony from the ITC proceedings, as argued by Patent Owner, its declarant agreed that making ammunition softer would make injury less likely, if all other parameters were equal, not larger and heavier like a substitution with Spitballs. PO Resp. 16–17 (citing Pet. 37; Ex. 1004, 531:25–532:9; Ex. 2015 ¶¶ 60–61); Ex. 1017 ¶ 67 (Petitioner’s declarant opining that Spitballs can “grow up to 200 times their original size” to reach a mass of 1.844g); Ex. 1037 ¶ 39 (Petitioner’s declarant agreeing that “when all other variables are held constant, heavier is less safe, meaning injury potential is increased”); Ex. 2015 ¶¶ 54–59 (Patent Owner’s declarant opining that heavier and softer ammunition can pose more injury risk); Ex. 2016, 11 (indicating that airsoft ammunition typically comes in weights from 0.12g to 0.25g). We, thus, agree with Patent Owner that Petitioner fails to prove that” slip op. at 16

  Patent outcomesUS 8,596,255 not shown unpatentable
  Claim construction§ 103 obviousnesscites Phillips · Graham
  Patents in suitUS 8,596,255
• Merck Sharp & Dohme LLC v. The Johns Hopkins UniversityAll claims unpatentable
  PTAB · Sep 23, 2025 · IPR2024-00649 · APJ Sheridan K Snedden · IPR · Final written decision

  Claims 1–28 are unpatentable: claims 1, 2, 4–7, 9–12, 14–17, and 19–28 are anticipated by the MSI-H Study Record; claims 3, 8, 13, and 18 are obvious.

  RulingsFinal written decision

  • Claim Construction › Intrinsic evidence (Phillips canons) › Plain and ordinary meaning to a POSITATerm construed patent owner constructionDecided for patent owner

    “We agree with Patent Owner that the phrase “in response to” in claim 1 requires a causal relationship wherein the patient must be tested for MSI-H and, if he or she is determined to be MSI-H or dMMR, then the patient is treated with 10 mg/kg of pembrolizumab every 14 days. In claim 1, a biological sample from the patient must be tested to determine if the cancer is MSI-H and, if so, the patient is treated with a therapeutically effective amount of pembrolizumab. For this reason, if the prior art teaches the limitations of 1) testing a biological sample obtained from a patient having cancer to determine that the patient’s cancer is microsatellite instability high or mismatch repair deficient, and 2) treating the patient with a therapeutically effective amount of pembrolizumab if the patient’s cancer is determined to be microsatellite instability high or DNA mismatch repair deficient, the art anticipates claim 1. We are not persuaded that claim 1 requires or excludes anything else because nothing else is recited in the claim.” slip op. at 9

  • Skill levelSkill level board ownOther

    “In the Decision to institute trial, we adopted Petitioner’s uncontested proposal defining that the level of skill in the art, presented above. Inst. Dec. 7. Neither party directs us to evidence of the level of skill in the art beyond what we considered for institution of trial. Having considered Patent Owner’s positions and evidence of record, however, we determine that the level of skill also includes knowledge of and experience with treating cancer patients with immunotherapy compounds, identifying the conditions these patients may have, and understanding the literature regarding clinical trials for such cancers and the associated conditions and immunotherapy.” slip op. at 15

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

    “holding is limited to anticipation of a claimed genus through disclosure of individual species, whereas the facts of this case involve the disclosure of a genus. PO Resp. 14. Because the facts before us, including the testimony of Patent Owner’s witness, indicate that one of ordinary skill in the art would have immediately understood that the third arm of the study described in the MSR includes patients with cancers recited in claim 1, including endometrial, gastric, and small-bowel cancers, we are persuaded that one of ordinary skill in the art would have understood that the MSR discloses species that fall within the scope of claim 1. Ex. 2090 ¶ 79; Ex. 1243, 115:5–116:22; Ex. 1085, 673–75; Ex. 1086, 14; Ex. 1003 ¶¶ 25, 63; Ex. 1005, 4. We are not persuaded that where species falling within the scope of claim 1 were previously known and disclosed in MSR, that claim 1 is patentable over the MSR. See Kennametal, Inc. v. Ingersoll Cutting Tool Co., 780 F.3d 1376, 1381 (Fed. Cir. 2015) (“a reference can anticipate a claim even if it ‘d[oes] not expressly spell out’ all the limitations arranged or combined as in the claim, if a person of skill in the art, reading the reference, would ‘at once envisage’” the claimed arrangement or combination.” (quoting In re Petering, 301 F.2d 676, 681 (CCPA 1962)). After considering the parties’ arguments and the evidence presented, we are persuaded that the MSR teaches “testing or having tested a biological sample obtained from a patient” having endometrial, small bowel, or gastric cancer and, thus teaches the corresponding limitation of claim 1.6” slip op. at 29

  • Obviousness (§103) › Objective indicia / secondary considerations › NexusObjective indicia no nexusDecided for petitioner

    “Regarding the dependent claims that Petitioner challenges only on obviousness grounds (claims 3, 8, 13, 18), Patent Owner must show a nexus between the claimed methods and the evidence of non-obviousness. See Henny Penny Corp. v. Frymaster LLC, 938 F.3d 1324, 1332 (Fed. Cir. 2019) (“to be accorded substantial weight in the obviousness analysis, the evidence of secondary considerations must have a ‘nexus’ to the claims, i.e., there must be ‘a legally and factually sufficient connection’ between the evidence and the patented invention. . . . Ultimately, ‘[t]he patentee bears the burden of showing that a nexus exists.’” (quoting Demaco Corp. v. F. Von Langsdorff Licensing Ltd., 851 F.2d 1387, 1392 (Fed. Cir. 1988), WMS Gaming, Inc. v. Int'l Game Tech., 184 F.3d 1339, 1359 (Fed. Cir. 1999)). Patent Owner does not direct us to evidence of a nexus to limitations recited in the dependent claims, for example to claims 3 and 13, which recite testing a biological sample that is a bodily fluid, claims 8 and 18, which recite testing that comprises assessing one or more markers selected from the group consisting of BAT-25, BAT-26, MONO-27, NR-21 and NR-24. Even if there is a nexus to the Patent Owner’s evidence of secondary considerations, the evidence addresses the methods of independent claims 1 and 11, not the limitations of the claims Petitioner challenges as being obvious. PO Resp. 55–83. Patent Owner directs us only to evidence regarding treating patients determined to have certain MSI-H cancers with pembrolizumab, which we determine to be anticipated by the MSR. Id. at 58. When evidence of a “secondary consideration is exclusively related to a single feature that is in the prior art,” our reviewing court has held the evidence is of no relevance to the obviousness inquiry. See Yita LLC v. MacNeil IP LLC, 69 F.4th 1356, 1363–65 (Fed. Cir. 2023), cert. denied, 144 S. Ct. 499 (2023) (distinguishing WBIP, LLC v. Kohler Co., 829 F.3d 1317, 1330–31 (Fed. Cir. 2016)); see also Ethicon Endo-Surgery, Inc. v. Covidien LP, 812 F.3d 1023, 1034 (Fed. Cir. 2016) (“[I]f the feature that creates the commercial success was known in the prior art, the success is not pertinent.”). In Yita, the prior art taught close-conformance of a floor tray with the walls of a vehicle foot well, which one of ordinary skill in the art would have had reason to use in combination with other prior-art teachings to arrive at the claimed invention. See Yita, 69 F.4th at 1359–61. The court held that because the asserted evidence of secondary consideration related exclusively to close-conformity, the evidence was not persuasive of non-obviousness, even though the claimed floor tray was coextensive with the product that produced the evidence. See id. at 1364–65 (“The coextensiveness inquiry bears only on the presumption of nexus; it does not decide the overall nexus question.”). Because Patent Owner directs us only to evidence that the methods recited in claims 1 and 11 produced evidence of secondary considerations, we are not persuaded that this evidence is persuasive of the non-obviousness of the specific methods recited in the dependent claims. For example, Patent Owner fails to direct us to evidence that a method of treating MSI-H colorectal cancer in a patient “wherein the biological sample is a body fluid from the patient,” as recited in claim 3, or “wherein the at least one marker comprises BAT-25, BAT-26, MONO-27, NR-21 or NR-24,” as recited in claim 8, demonstrated unexpected results or commercial success. Accordingly, having considered the evidence of record as a whole, we determine that Petitioner has demonstrated by a preponderance of the evidence that the methods of claims 3, 8, 13, and 18 would have been obvious. We are not persuaded to the contrary by Patent Owner’s arguments or evidence of second secondary considerations.” slip op. at 47

  Patent outcomesUS 11,629,187 unpatentable
  Claim construction§ 102 anticipation§ 103 obviousnesscites KSR · Graham
  Patents in suitUS 11,629,187
• Merck Sharp & Dohme LLC v. The Johns Hopkins UniversityAll claims unpatentable
  PTAB · Sep 23, 2025 · IPR2024-00647 · APJ Sheridan K Snedden · IPR · Final written decision

  Claims 1–36 are unpatentable: claims 1–2, 4–8, 11–12, 14–18, and 21–36 as anticipated, and claims 3, 9, 10, 13, 19, and 20 as obvious.

  RulingsFinal written decision

  • Claim Construction › Intrinsic evidence (Phillips canons) › Plain and ordinary meaning to a POSITATerm construed board ownDecided for patent owner

    “We agree with Patent Owner that the phrase “in response to” in claim 1 requires a causal relationship wherein the patient must be tested for MSI-H and, if he or she is determined to be MSI-H or dMMR, then the patient is treated with 10 mg/kg of pembrolizumab every 14 days. In claim 1, a biological sample from the patient must be tested to determine if the cancer is MSI-H and, if so, the patient is treated with a therapeutically effective amount of pembrolizumab. For this reason, if the prior art teaches the limitations of 1) testing a biological sample obtained from a patient having colorectal cancer to determine that the patient’s colorectal cancer is microsatellite instability high or mismatch repair deficient, and 2) treating the patient with a therapeutically effective amount of pembrolizumab if the patient’s colorectal cancer is determined to be microsatellite instability high or DNA mismatch repair deficient, the art anticipates claim 1. We are not persuaded that claim 1 requires or excludes anything else because nothing else is recited in the claim.” slip op. at 9

  • Skill levelSkill level petitioner adoptedDecided for petitioner

    “The ’287 patent claims a method of treating a human patient with colorectal cancer having certain characteristics using pembrolizumab and the main prior art reference cited by Petitioner discloses testing pembrolizumab to treat human patients. See Ex. 1001, 24:42–52; Ex. 1005. Accordingly, the relevant field of Patent Owner’s claims is treating human patients, as well as testing existing compounds. In the Decision to institute trial, we adopted Petitioner’s uncontested proposal defining that the level of skill in the art, presented above. Dec. 7– 8. Neither party directs us to evidence of the level of skill in the art beyond what we considered for institution of trial. Having considered Patent Owner’s positions and evidence of record, however, we determine that the level of skill also includes knowledge of and experience with treating cancer patients with immunotherapy compounds, identifying the conditions these patients may have, and understanding the literature regarding clinical trials for such cancers and the associated conditions and immunotherapy.” slip op. at 14

  • Novelty / Anticipation (§102) › Anticipation standard (single reference, every element)UnpatentableUnpatentable
  • Expert testimonyPetitioner expert creditedDecided for petitioner

    “In an anticipation analysis, the dispositive question is whether a skilled artisan would ‘reasonably understand or infer’ from a prior art reference that every claim limitation is disclosed in that single reference.” Acoustic Tech., Inc. v. Itron Networked Sols., Inc., 949 F.3d 1366, 1373 (Fed. Cir. 2020). Extrinsic evidence, such as declarations and depositions may be considered when it is used to explain, but not expand, the meaning of a reference. See In re Baxter Travenol Labs., 952 F.2d 388, 390 (Fed. Cir. 1991) (holding that the depositions and declarations of skilled workers were properly used to show what those skilled in the art would have known about the prior art). We credit Dr. Neugut’s and Dr. Oberstein’s testimony about what one of ordinary skill in the art would have understood after reviewing the MSR. slip op. at 34

  Patent outcomesUS 11,649,287 unpatentable
  Claim construction§ 102 anticipation§ 103 obviousnesscites KSR · Graham
  Patents in suitUS 11,649,287
• Merck Sharp & Dohme LLC v. The Johns Hopkins UniversityAll claims unpatentable
  PTAB · Sep 19, 2025 · IPR2024-00650 · APJ Deborah Katz · IPR · Final written decision

  Claims 1–38 are unpatentable: claims 1, 2, 4–7, 11–17, 19–22, and 26–38 are anticipated by the MSR; the remaining claims are obvious over the MSR and cited references.

  RulingsFinal written decision

  • Skill levelSkill level board ownDecided for petitioner

    “Petitioner and Patent Owner characterize one of ordinary skill in the art differently. To Petitioner, the ordinarily skilled artisan would be a medical doctor, or a professional in a related field, with experience treating cancer or access to those with experience in clinical studies of therapeutics and to a pathologist with this experience. (See Pet. 11 (citing Ex. 1003 ¶ 19).) To Patent Owner, the ordinarily skilled artisan would have had a medical or graduate-level degree, or equivalent work experience, in the fields of immunology, genetics, or a related field and would have experience (i) conducting immunology research relating to oncology, (ii) conducting genetics research relating to oncology, or (iii) developing and conducting clinical trials on novel cancer therapies in those fields. (See PO Resp. 5–6 (citing Ex. 2072 ¶¶ 31–32, 91–99).) Petitioner emphasizes medical and treatment aspects in its characterization of an ordinarily skilled artisan, whereas Patent Owner emphasizes research aspects. The ’491 patent claims a method of treating a human patient with cancer having certain characteristics using pembrolizumab and the main prior art reference cited by Petitioner discloses testing pembrolizumab to treat human patients. (See Ex. 1001, 25:36–52, 26:24–41, Ex. 1005; see Decision 8–9.) Accordingly, the relevant field of Patent Owner’s claims is treating human patients, as well as testing existing compounds. In light of the extent of the relevant field, we determine that the level of skill in the art relevant to the claims of the ’491 patent is not limited to knowledge of and experience with conducting research relating to oncology or developing and conducting clinical trials, but includes knowledge of and experience with treating cancer patients with immunotherapy compounds, identifying the conditions these patients may have, and understanding the literature regarding clinical trials for such colorectal cancers and the associated conditions and immunotherapy. C. Claim Construction” slip op. at 8

  • Expert testimonyPetitioner expert creditedPatent owner expert discountedDecided for petitioner

    “Dr. Lonberg, Patent Owner’s witness, does not dispute any of Dr. Neugut’s or Dr. Oberstein’s testimony, but asserts only that Dr. Neugut’s testimony relies only on what was generally done, not on what is expressly disclosed in the MSR. (See Ex. 2072 ¶¶ 105–107.) On cross-examination, Dr. Lonberg agreed with Dr. Oberstein that patients who had received prior cancer therapy were not excluded from the study described in the MSR. (See Ex. 1245, 57:5–58:2, 40:5–14, 49:2–12.) Thus, after considering the evidence cited by each party, we find Dr. Neugut’s and Dr. Oberstein’s testimony to be the most directly relevant and persuasive about what one of ordinary skill in the art would have understood from the MSR itself. We are also persuaded by the lack of a specific contradiction regarding the understanding of one of ordinarily skill in the art by Dr. Lonberg. Even if some patients who had been previously treated with specific drugs were excluded from the study described in the MSR, we are persuaded that one of ordinary skill in the art would have understood the MSR as including other patients who have been treated with a prior cancer therapy drug. We are persuaded that Petitioner has met its burden of proving whether a skilled artisan would reasonably understand or infer that the limitations of claims 13, 28, 32, and 36 were disclosed in the MSR. Petitioner demonstrates what one of ordinary skill in the art would have understood from the MSR, not what it inherently discloses. (Contra PO Resp. 19–22.)” slip op. at 38

  • Claim Construction › Intrinsic evidence (Phillips canons) › Plain and ordinary meaning to a POSITATerm construed board ownDecided for petitioner

    “Patent Owner argues that the “in response to” limitation of claim 1 describes administering the claimed treatment only to patients determined to have an MSI-H tumor. (See PO Resp. 6.) But neither claim 1 nor claim 16 includes a limitation excluding the treatment of any patient, such as specifically excluding treatment of any patient who has a tumor that is not MSI-H or dMMR. Neither claim 1 nor claim 16 recites any language differentiating between patients or identifying a patient population to be excluded from treatment. Instead, claims 1 and 16 provide that if the colorectal cancer patient is tested and the cancer is determined to be MSI-H or dMMR, the patient is treated with a therapeutically effective amount of pembrolizumab. We note that the methods of claims 1 and 16 use the open-ended transitional phrase “comprising” that is generally interpreted to not exclude additional, unrecited elements. See Invitrogen Corp. v. Biocrest Mfg., L.P., 327 F.3d 1364, 1368 (Fed. Cir. 2003) (“The transition ‘comprising’ in a method claim indicates that the claim is open-ended and allows for additional steps.”); Genentech, Inc. v. Chiron Corp., 112 F.3d 495, 501 (Fed. Cir. 1997) (“‘Comprising’ is a term of art used in claim language that means that the named elements are essential, but that other elements may be added and still form a construct within the scope of the claim.”). The use of the open-ended transitional phrase “comprising” in claims 1 and 16 further suggests to us that any additional steps taken in conjunction with expressly recited method steps, such as the treatment of patients who are not MSI-H or dMMR, are not excluded from the scope of the claim.” slip op. at 13

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

    “discloses species that fall within the scope of claim 1. (See Ex. 2090 ¶ 79; Ex. 1243, 115:5–116:22; Ex. 1085, 673–75; Ex. 1086, 14; Ex. 1003 ¶¶ 25, 67; Ex. 1005, 4.) We are not persuaded that where species falling within the scope of claim 1 were previously known and disclosed in MSR, that claim 1 is patentable over the MSR. See Kennametal, Inc. v. Ingersoll Cutting Tool Co., 780 F.3d 1376, 1381 (Fed. Cir. 2015) (“a reference can anticipate a claim even if it ‘d[oes] not expressly spell out’ all the limitations arranged or combined as in the claim, if a person of skill in the art, reading the reference, would ‘at once envisage’” the claimed arrangement or combination.” (quoting In re Petering, 301 F.2d 676, 681 (CCPA 1962)). After considering the parties’ arguments and the evidence presented, we are persuaded that the MSR teaches “testing or having tested a biological sample obtained from a patient” having endometrial, small bowel, or gastric cancer and, thus teaches the corresponding limitation of claim 1. d) Element [1.3]: “thereby determining that the patient’s cancer is” slip op. at 26

  Patent outcomesUS 11,634,491 unpatentable
  Claim construction§ 102 anticipation§ 103 obviousnesscites KSR · Graham
  Patents in suitUS 11,634,491
• Meta Platforms, Inc. v. Sitnet LLCAll claims unpatentable
  PTAB · Sep 8, 2025 · IPR2024-00529 · APJ Neil T Powell · IPR · Final written decision

  Claims 1–9 and 20 are unpatentable as obvious; claims 10–19 are cancelled by adverse judgment after Patent Owner’s request.

  RulingsFinal written decision

  • Skill levelSkill level petitioner adoptedDecided for petitioner

    “had a bachelor’s degree in Computer or Electrical Engineering or equivalent discipline, and approximately two years’ experience in telecommunications or computer networking,” adding that “[a]dditional education could substitute for professional experience, and significant work experience could substitute for formal education.” Pet. 9 (citing Ex. 1003 ¶¶ 45–46).” slip op. at 7

  • Claim Construction › Threshold & procedure › Whether a term needs construction (O2 Micro)No construction neededDecided for patent owner

    “proposed constructions, and determined that “event node” does not need construction. Ex. 2007, 5. In the Institution Decision, we agreed with the District Court that “event node” does not need construction, and we continue to do so here. See Inst. Dec. 8. Independent claim 1 recites “creating, by an event node server, an event node in a multi-dimensional personal information network, the event node corresponding to a situation,” “transmitting an invitation to establish a link with the event node server to the devices corresponding to each node in the projection formed in step (b),” “receiving a response from at least one of the devices from step (c) accepting the invitation to establish a link with the event node server,” and “establishing a link with each device accepting the invitation.” Ex. 1001, 33:21–35; see also PO Resp. 3 (emphasizing claim 1’s recitations that the “event node” is “in a multi-dimensional personal information network” and “correspond[s] to a situation.”). Claim 20 includes similar recitations related to the “event node.” Ex. 1001, 34:45–64. In view of this, we determine that the claim language itself provides sufficient meaning for the term “event node” and further construction is not necessary.9” slip op. at 10

  • Obviousness (§103) › Graham factors (scope of art, differences, level of skill)UnpatentableUnpatentable

    “event node.” Petitioner persuades us that Amidon’s architecture provides a social network (the recited “situational network”) and the social network conference within the social network is the event node. In particular, the evidence demonstrates that Amidon separately teaches a social network and a social network conference. For example, as Petitioner notes, Amidon suggests that a conference may include a subset of the users in its social network, such as “all users currently listening to the same song” or “a subset of a social network circuit related to a game when the subset includes three or more people.” Ex. 1005, 13:6514:3, 14:22–27; Pet. 20–22; see also Ex. 1005, 13:57–14:29. Therefore, Patent Owner’s argument that the social network conference is the social network (see Sur-reply 6–8), rather than the event node, does not persuasively address Petitioner’s contentions.10 Patent Owner’s argument that Amidon’s social network conference merely comprises a group of individuals communicating with each other so it cannot be an event node does not take into account that Amidon’s social network conference is also defined by a data structure, such as the data structure shown in Figure 3. See PO Resp. 7–10; Pet. 19–20; Reply 7–8. The parties do not dispute that Amidon’s social network conference is defined by a data structure. PO Resp. 11–13 (e.g., “Fig. 3 shows a database entry for a conference.”); Reply 7. We find persuasive Petitioner’s argument that “the conference itself (as defined by the stored data and accessible via window 200) is the claimed event node.” Reply 7. slip op. at 20

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

    “Weighing the Parties’ arguments and evidence, Petitioner persuades us that a person of ordinary skill in the art would have had motivation to configure Wong’s social network with an ad-hoc communication network like Gogic’s, as well as a reasonable expectation of success. As Petitioner argues, Gogic’s disclosure that the ad-hoc communication network “may allow emergency services to be more efficiently or more appropriately deployed” would have motivated adding such an ad-hoc communication network to Wong’s system. Pet. 48; Ex. 1007, 4:20–24. Additionally, contrary to Patent Owner’s arguments, Petitioner’s evidence demonstrates technical compatibility of the references’ disclosures. As Petitioner notes, Gogic discloses using its approach with a wide range of technologies, including “portable or desktop computers.” Ex. 1007, 4:46– 49; Pet. 48. Wong likewise discloses implementing its social network with a wide range of technologies, such as “laptops, desktops, handheld, personal digital assistants, personal digital assistants, [or] mobile telephones.” Ex. 1006 ¶ 17; Pet. 49. These disclosures show that a person of ordinary skill in the art would have had a reasonable expectation of success implementing Gogic’s method in Wong’s social network using, for example, desktop computers.11 Patent Owner recognizes that Gogic discloses implementing its system with desktop computers. PO Resp. 22. But Patent Owner contends that a person of ordinary skill in the art would not have known how to implement Gogic’s invention, such as its location determination, using desktop computers. Id. This argument does not recognize that, as a prior art patent, Gogic is presumed enabled, including its disclosure of using desktop computers to implement its system. Apple Inc. v. Corephotonics, Ltd., 861 F. App’x 443, 450 (Fed. Cir. 2021) (nonprecedential; inter partes review context); Amgen Inc. v. Hoechst Marion Roussel, Inc., 314 F.3d 1313, 1354 (Fed. Cir. 2003). Patent Owner’s arguments and evidence do not rebut this presumption. For example, Dr. Rubin’s testimony that “from the descriptions and figures provided in Gogic it would suggest that location is determined via technologies specific to wireless networks and telecommunications” does not persuade us that Gogic fails to enable 11 Accordingly, Patent Owner’s argument about the difficulties of modifying Gogic to use Wong’s social network are inapposite. PO Resp. 24. implementing its approach with desktop computers, such as those used in Wong. Ex. 2009 ¶ 87 (emphasis added). To the extent Gogic suggested wireless technologies as a way to determine location, that does not detract from Gogic’s disclosure of using other technologies, including desktop computers, to implement its invention.” slip op. at 35

  Patent outcomesUS 8,332,454 unpatentable
  Claim construction§ 103 obviousnesscites Phillips
  Patents in suitUS 8,332,454
• Meta Platforms, Inc. v. Sitnet, LLCAll claims unpatentable
  PTAB · Sep 8, 2025 · IPR2024-00612 · APJ Kara L Szpondowski · IPR · Final written decision

  Claims 12–21 are unpatentable: claims 12, 14–19, and 21 as obvious over Amidon and Walsh; claim 13 with Shahine; and claim 20 with Shahine and Jones.

  RulingsFinal written decision

  • Claim Construction › Threshold & procedure › Whether a term needs construction (O2 Micro)No construction neededOther

    “proposed constructions, and determined that “event node” does not need construction. Ex. 2007, 5. In the Institution Decision, we agreed with the District Court that “event node” does not need construction, and we continue to do so here. See Inst. Dec. 11–12. As Patent Owner acknowledges, independent claim 12 recites “establishing an event node for the situation in a multi-dimensional personal information network.” PO Resp. 1. Claim 12 further recites “automatically connecting personal information aggregators corresponding to a plurality of individuals to the event node” and “aggregating information related to the situation received from the personal information aggregators connected through the situational network.” Ex. 1001, 33:54–56, 34:1–3 (emphasis added). In other words, the claim language itself provides sufficient meaning for the term “event node” and further construction is not necessary.9” slip op. at 12

  • Obviousness (§103) › Graham factors (scope of art, differences, level of skill)UnpatentableUnpatentable

    “Patent Owner’s argument that Amidon’s social network conference merely comprises a group of individuals communicating with each other so it cannot be an event node does not take into account that Amidon’s social network conference is also defined by a data structure, such as the data structure shown in Figure 3. See PO Resp. 4–7; Pet. 16; Reply 7–8. The parties do not dispute that Amidon’s social network conference is defined by a data structure. PO Resp. 8–10 (e.g., “Fig. 3 shows a database entry for a conference.”); Reply 13. We find persuasive Petitioner’s argument that the social network conference “is an element created in Amidon’s network that facilitates communication between a group of individuals, defined by data.” Reply 8–9; see also id. at 13–14.” slip op. at 25

  • Skill levelSkill level petitioner adoptedDecided for petitioner

    “Patent Owner does not challenge Petitioner’s definition. See generally PO Resp. In our Institution Decision, we adopted Petitioner’s proposed definition, finding it to be reasonable and commensurate with the problems and solutions disclosed in the prior art. Inst. Dec. 8–9. We continue to do so here.” slip op. at 10

  Patent outcomesUS 8,249,932 unpatentable
  Claim construction§ 103 obviousnesscites Phillips · KSR · Graham
  Patents in suitUS 8,249,932
• Meta Platforms, Inc. v. Sitnet, LLCAll claims unpatentable
  PTAB · Sep 8, 2025 · IPR2024-00531 · APJ Thu A Dang · IPR · Final written decision

  Claims 1–20 are unpatentable as obvious over Burfeind and Crowley; the Board did not reach the Smith/Sinha or Smith/Sinha/Gage grounds.

  RulingsFinal written decision

  • Skill levelSkill level petitioner adoptedDecided for petitioner

    “Relying on the Declaration of Dr. Cooperstock, Petitioner contends that a person of ordinary skill in the art (POSITA) at the time of the invention of the ’682 patent would have had a bachelor’s degree in Computer or Electrical Engineering or equivalent discipline, and approximately two years’ experience in telecommunications or computer networking, whereby additional education could substitute for professional 6 U.S. Patent Appl. Publication No. 2008/0139165 A1, published June 12, 2008, filed December 11, 2006 (Ex. 1009, “Gage”). experience, and significant work experience could substitute for formal education. Pet. 13 (citing Ex. 1003 ¶¶ 62–63). We adopt Petitioner’s assessment of the level of a person of ordinary skill in the art because it is consistent with the problems addressed in the ’682 patent and the prior art. See Okajima, 261 F.3d at 1354–55 (holding that absent evidence to the contrary, “the prior art itself [may] reflect[] an appropriate level” of ordinary skill in the art).” slip op. at 10

  • Claim Construction › Threshold & procedure › Whether a term needs construction (O2 Micro)No construction neededOther

    “B. Claim Construction We construe each claim “in accordance with the ordinary and customary meaning of such claim as understood by one of ordinary skill in the art and the prosecution history pertaining to the patent.” 37 C.F.R. § 42.100(b) (2020). Under this standard, claim terms are generally given their plain and ordinary meaning as would have been understood by a POSITA at the time of the invention and in the context of the entire patent disclosure. See Phillips v. AWH Corp., 415 F.3d 1303, 1313 (Fed. Cir. 2005) (en banc). In the Decision on Institution, we determined that no terms of the challenged claims require explicit construction.7 We discern no reason to further discuss construction of any claim terms in this Final Written Decision.” slip op. at 11

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

    “would have found it obvious to combine the teachings of Burfeind and Crowley (Pet. 15–22), citing Dr. Cooperstock’s supporting testimony (Ex. 1003). In particular, Petitioner posits that a POSITA would have sought references for improving upon “Burfeind’s burdensome and imprecise manual participant selection process,” wherein Crowley is such a reference. Pet. 17–18 (citing Ex. 1005, Abstract, ¶¶ 4, 7–8, 45; Ex. 1003 ¶¶ 81–82). Petitioner contends that Crowley’s system provides numerous advantages, such as “enabling ‘spontaneous socializing’ and ‘convenient communication among friends,’” and “help[s] avoid the problem of friends who were out near each other, but never realized it until later.” Id. at 18–19 (citing Ex. 1005 ¶¶ 6, 35). According to Petitioner, “Crowley thus provides express motivation for implementing its location-based features in Burfeind.” Id. at 19 (citing Ex. 1003 ¶¶ 84–86). Petitioner further contends that a POSITA would have a reasonable expectation of success in implementing the features of Crowley in Burfeind. Pet. 19 (citing Ex. 1003 ¶ 89–92). In particular, a POSITA would have readily been able to adapt Crowley’s location-tracking features “to identify user locations for the purpose of inviting individuals who are located near the event location.” Id. (citing Ex. 1003 ¶¶ 89–90). According to Petitioner, Burfeind and Crowley disclose similar systems for organizing meetings between individuals (id. at 22 (citing Ex. 1004, Abstract; Ex. 1005 ¶ 5)), and because Burfeind “already contemplates techniques for grouping individuals in order to more conveniently select those individuals,” a POSITA “would have thus readily been able to modify Burfeind to determine the event organizer’s contacts that are located proximate to selected event venue.” Id. at 21–22 (citing Ex. 1003 ¶¶ 89–92). Thus, according to Petitioner, the POSITA: would have understood that implementing Crowley’s techniques in Burfeind would merely amount to the use of a known technique (Crowley’s location-based messaging) to improve similar systems in the same way (enabling the system to automatically send messages/invitations to nearby individuals), as well as applying a known technique to a known system ready for improvement to yield predictable results. Pet. 22 (citing Ex. 1003 ¶ 93).” slip op. at 28

  • BurdenUnpatentable

    “would have been obvious in view of Burfeind and Crowley (Pet. 15–51), starting with the contentions with respect to the limitations of independent claims 1 and 11. With respect to each of the limitations, Patent Owner does not respond.8 Nonetheless, the burden remains on Petitioner to demonstrate unpatentability. See Dynamic Drinkware, LLC v. Nat’l Graphics, Inc., 800 F.3d 1375, 1378 (Fed. Cir. 2015).” slip op. at 18

  Patent outcomesUS 11,470,682 unpatentable
  Claim construction§ 103 obviousnesscites Phillips · KSR · Graham
  Patents in suitUS 11,470,682
• Meta Platforms, Inc. v. Sitnet, LLCAll claims unpatentable
  PTAB · Sep 8, 2025 · IPR2024-00530 · APJ Thu A Dang · IPR · Final written decision

  Claims 1–16 are unpatentable as obvious; the Board denied the contingent motion to amend proposing substitute claims 17–32.

  RulingsFinal written decision

  • Expert testimonyOther

    “iv. Claim 1 Conclusion Based on the complete record presented, Petitioner has shown that Gage teaches all limitations of claim 1. Thus, we determine that Petitioner has shown by a preponderance of the evidence that the subject matter of claim 1 would have been obvious over Gage. v. Independent claim 8 Independent claim 8 recites a method of “providing situation related information to a situation authority via a situational network,” wherein the method comprises “receiving, by a participant device, a roll call query soliciting a reply related to a status of a participant based on the participant being determined, by the situation authority, to be geographically proximate to the situation,” “receiving, by the participant device, a selection of a status response from the participant,” and “sending the status response to the central authority, wherein the status response is included in a roll call list.” Ex. 1001, 34:46–57. Petitioner generally refers to its contentions with respect to claim 1. Pet. 34–36. In particular, Petitioner contends that Gage teaches a subscriber device that communicates a status indicator to the disaster response system through a subscriber status reporting system that implements a “situational network” configured for use during disasters. Id. at 34 (citing Ex. 1005 ¶¶ 19, 25). Petitioner additionally contends that Gage’s “disaster response system” is a “situation authority” because the disaster response system detects an occurrence of a disaster affecting a region, receives and aggregates information related to the disaster, and then provides the information to various participants in the network. Id. (citing Ex. 1005 ¶¶ 8–9, 21, 36, 45; Ex. 1003 ¶ 104). With respect to the “situational network” limitation, Patent Owner” slip op. at 39

  • Claim Construction › Threshold & procedure › Whether a term needs construction (O2 Micro)No construction neededOther

    “1. “situational network” (claims 1, 8, 13) Patent Owner points out that the district court has already construed” slip op. at 12

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

    “viii. Ground 1 Conclusion In light of the above analysis, we determine that Petitioner’s evidence” slip op. at 46

  • PTAB / AIA Trials › Motions to amend / substitute claimsMotion to amend, deniedDenied

    “c. Conclusion on Petitioner’s Patentability Challenges based on Obviousness for Proposed Substitute Claims For the above reasons, we determine that Petitioner has shown by a preponderance of evidence that the subject matter of proposed substitute claims 17–32 would have been unpatentable. IV. CONCLUSION9 For the foregoing reasons, we conclude that Petitioner has shown by a” slip op. at 82

  Patent outcomesUS 9,877,345 unpatentable
  Claim construction§ 101 eligibility§ 103 obviousnesscites Alice · Mayo · Bilski · Phillips · KSR · Graham
  Patents in suitUS 9,877,345

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.