• Charles River Laboratories, Inc. v. Seikagaku CorporationAll claims unpatentable
  PTAB · Sep 8, 2026 · IPR2025-00440 · APJ Tawen Chang · IPR · Final written decision

  Claim 21 is unpatentable as obvious over Mizumura with either the ’498 PCT or McClymont; the Revised Contingent Motion to Amend proposing claim 22 is denied.

  RulingsFinal written decision

  • Skill levelSkill level patent owner adoptedDecided for patent owner

    “overlap to a significant degree, i.e., a person with a Ph.D. in a discipline related to biological sciences and having had at least two years of work experience. However, the parties’ proposals differ slightly in the specific subjects in which a POSA would have had a doctoral degree, and whether the person’s work experience must have been directly related to horseshoe crab Factor C. As an initial matter, we find that a rigid requirement as to the subject of a POSA’s doctoral degree (e.g., biochemical engineering, enzymology), or experience working specifically with horseshoe crab proteins, is not consistent with the evidence of record. See, e.g., Ex. 1067, 20:23–21:2 (Dr. Schaefer testifying that the fact the “name of [his] Ph.D. is immunology . . . does not change the fact that the core of [his] thesis training was really in molecular biology”), 22:3–15 (explaining “the fact that the production of proteins recombinantly is mostly species agnostic”); Ex. 1069, 45:20–47:17 (Dr. Morris testifying that whether a person is a POSA depends on the person’s “experience, [ ] publications,” and work done for the Ph.D. rather than the name of the Ph.D. program). We also find that evidence of record supports Petitioner’s assertion that, for purposes of defining a POSA, “[m]ore education could substitute for experience, and vice versa.” See, e.g., Pet. 19; Ex. 1065, 99:14–100:3. with respect to the claims of the ’318 patent would have had a Ph.D. in molecular biology, biochemistry, or a related discipline, and about two years of experience with cloning genes, expressing cloned genes as proteins, and/or characterizing such cloned genes and proteins, with more education being able to substitute for experience, and vice versa. A POSA may also have collaborated with others, including those with specific experience in utilizing or assessing horseshoe crab Factor C for endotoxin detection and quantitation.” slip op. at 13

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

    “C. Claim Construction The parties agree that “the terms in claim 21 can be afforded their plain and ordinary meaning for purposes of this proceeding” without further construction. Pet. 19–20; PO Resp. 11. Because express claim construction is not needed to resolve the issues in this case, we need not, and do not, construe expressly any claim term for purposes of this Decision. 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 14

  • Disclosure Requirements (§112) › Written description (Ariad)Written description inadequateNot entitled to earlier dateDecided for petitioner

    “Carrying Out the Invention section, that “[t]he Factor C of the present invention is a Factor C derived from a horseshoe crab,” and states later in the same section that “[e]xamples of the horseshoe crab include . . . Limulus polyphemus.” Ex. 1006, 40. However, none of the remaining portions of ’767 application cited by Patent Owner relate directly to L. polyphemus; instead, the remaining portions of ’767 application cited by Patent Owner are directed to other species, in particular the Japanese horseshoe crab T. tridentatus. Further, Patent Owner’s witness, Dr. Schaefer, conceded that the ’767 application does not contain Factor C sequence information for L. polyphemus. See, e.g., Ex. 1067, 44:25–45:23. Although “[n]o length requirement exists for a disclosure to adequately describe an invention,” Falko-Gunter, 448 F.3d at 1365–1366, we are persuaded that a POSA would not, based on the totality of the above disclosures, reasonably understand that the inventors were in possession of the claimed HEK-293 recombinant L. polyphemus Factor C protein, in view of the state of the art as of December 10, 2013. In this regard, we note that adequate written description of a biological molecule, such as a HEK293 recombinant L. polyphemus Factor C protein, requires “more than a mere statement that it is part of the invention and reference to a potential method for isolating it”; instead, what is required is “‘a precise definition, such as by structure, formula, chemical name, or physical properties,’ not a mere wish or plan for obtaining the claimed chemical invention.” The Regents of the” slip op. at 21

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

    “Pfizer, Inc. v. Apotex, Inc., 480 F.3d 1348, 1364 (Fed. Cir. 2007). Neither do we see Petitioner’s arguments regarding the December 10, 2013 priority date to be “mutually opposed” as Dr. Schaefer testified. Ex. 1067, 216:4– 24. Instead, we credit evidence of record, including Dr. Jain’s testimony and the February 22, 2018 Mizumura Declaration, that existence of the full sequence would permit a more complete analysis and that such an analysis would provide a POSA with a reasonable expectation that the claimed L. polyphemus recombinant protein would have a residual activity within the claimed range. See, e.g., Ex. 1029, 2–5; Ex. 1010, 48; Ex. 1065, 117:14– 130:24 (explaining that comparison of partial sequences in the Tokunaga 1991 publication showed “difference around the cleavage site” between T. tridentatus and L. polyphemus but comparison of the full sequence revealed that “the catalytic triad of histidine, serine, aspartate . . . to be more similar between Tachypleus and Limulus”). Patent Owner asserts that “Petitioner’s reliance on a statement made by Dr. Mizumura in a declaration submitted during prosecution of the ’767 Application fails to fill the gap in the analysis” regarding reasonable expectation of success, because the declaration “offers no evidence of the percentage of conserved amino acid substitutions that exist to support the conclusion that a POSA would have expected residual activity to be maintained between Tachypleus tridentatus and Limulus polyphemus” PO Resp. 47. However, as noted above, Dr. Mizumura provides an alignment of Factor C proteins from the two different species of horseshoe crab, determines that the similarity between the amino acid sequence is 99.5%, states that the amino acid residues that can undergo N-type sugar chain that L. polyphemus, like T. tridentatus, would also be less susceptible to inhibition by ions. Ex. 1029, 4–5. For the reasons discussed above, we also disagree with Patent Owner’s assertion that Petitioner’s reasonable expectation of success argument is “nothing more than conclusory assertions with no support.” PO Resp. 46. Rather, we find Petitioner has shown, by a preponderance of the evidence, that a POSA would have had reason to combine the teachings of Mizumura and the ’498 PCT, with a reasonable expectation of success in arriving at the Factor C protein recited in claim 21.” slip op. at 38

  Patent outcomesUS 11,236,318 unpatentable
  Claim construction§ 103 obviousness§ 112 disclosurecites KSR · Graham
  Patents in suitUS 11,236,318
• Gene Company Pty Ltd v. The Trustees Of Columbia University In The City Of New YorkNo claims unpatentable
  PTAB · Jun 23, 2025 · IPR2024-00313 · APJ Tawen Chang · IPR · Final written decision

  Claims 1–54 were not shown unpatentable because Petitioner failed to establish a reasonable expectation of success for the proposed combinations; objective indicia also supported non-obviousness.

  RulingsFinal written decision

  • Skill levelSkill level patent owner adoptedDecided for patent owner

    “As to the first issue, we agree with Patent Owner that defining the level of skill in view of the solution described in the patent risks improper hindsight. Okajima v. Bourdeau, 261 F.3d 1350, 1355 (Fed. Cir. 2001) 18 (“[T]he level of skill in the art is a . . . lens through which . . . the Board views the prior art and the claimed invention,” which “prevents . . . factfinders from using their own insight or . . . hindsight[] to gauge obviousness.”). We therefore do not include “practical knowledge about . . . the deuterium isotope effect, including the patents and publications discussed [in the Petition],” as part of our definition of a person of ordinary skill in the art.” slip op. at 18

  • Expert testimonyPetitioner expert creditedMixed

    “person of ordinary skill in the art would employ” in an obviousness analysis, we give some weight to Dr. Guengerich’s testimony. KSR, 550 U.S. at 418; Plantronics, Inc. v. Aliph, Inc., 724 F.3d 1343, 1354 (Fed. Cir. 2013) (explaining that “motivation to combine may be found. . . in . . . the background knowledge, creativity, and common sense of the person of ordinary skill”). Nevertheless, even if we were to agree that an ordinarily skilled artisan would have seen the 1,5-shift in NRPE in Mata’s A2E biosynthetic pathway as a particularly desirable location for intervention, we are not persuaded that such a person would have been motivated to substitute C20 deuterated vitamin A for the vitamin A in Ortho Pharma’s composition and method, because Petitioner has not shown, by a preponderance of evidence, that such an artisan would have reasonably expected the substitution to retard the accumulation of A2E or to treat macular degeneration.” slip op. at 42

  • Claim Construction › Intrinsic evidence (Phillips canons) › Preamble limiting or notPreamble limitingDecided for patent owner

    “In our Institution Decision, we preliminarily construed the preamble of claim 28 as limiting. Inst. Dec. 30–31. Petitioner did not take issue with our construction, or dispute Patent Owner’s construction of the preambles of claims 1 and 29 as also limiting. After consideration of the full trial record, we maintain our construction of the preamble of claim 28 as limiting for the reasons set forth in our Institution Decision. For similar reasons and the reasons set forth in Patent Owner’s Response, we further construe the preambles of claims 1 and 29 as limiting. See PO Resp. 12–14. We further determine that we do not need to construe any other claim term in order to resolve the controversy between the parties. 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 26

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

    “415 F.3d 1303, 1312–19 (Fed. Cir. 2005) (en banc). Under this framework, claim terms are given their ordinary and customary meaning, as would be understood by a person of ordinary skill in the art, at the time of the invention, in light of the language of the claims, the specification, and the prosecution history of record. Id.” slip op. at 25

  Patent outcomesUS RE47,045 not shown unpatentable
  Claim construction§ 103 obviousnesscites Phillips · KSR · Graham
• Samsung Bioepis Co. Ltd. v. Regeneron Pharmaceuticals, Inc.All claims unpatentable
  PTAB · Jun 14, 2024 · IPR2023-00442 · APJ John G New · IPR · Final written decision

  Claims 1, 3–11, 13, 14, 16–24, and 26 are unpatentable as obvious over Dixon because Dixon anticipates them.

  RulingsFinal written decision

  • Claim Construction › Intrinsic evidence (Phillips canons) › Preamble limiting or notPreamble limitingDecided for petitioner

    “We adopt the same reasoning here, and conclude that the evidence of record and the Specification of the ’681 patent support construing the preamble’s recitation of a “method for treating a patient with an angiogenic eye disorder” as meaning administering a compound, i.e., the recited VEGF antagonist, to a patient for the purpose of improving or providing a beneficial effect in their angiogenic eye disorder. We find that, as in Eli Lilly & Co. v. Teva Pharms. Int’l GmbH, although the claims “encompass a clinical result, they do not require such a result.” (emphasis added). 8 F.4th 1331, 1343 (Fed. Cir. 2021). We consequently reject Patent Owner’s proposed construction that the language of the preamble reciting a “method for treating an angiogenic eye disorder” requires not only an intent to treat, but, additionally, a high degree of efficacy on par with monthly Lucentis. See PO Resp. 9–10.” slip op. at 17

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

    “We adopt Petitioner’s proposed construction of the claim terms “initial dose,” “secondary dose,” and “tertiary dose.” Petitioner proposes adoption of the definitions expressly set forth in the Specification of the ’681 patent, viz., that the initial dose is the dose “administered at the beginning of the treatment regimen,” and is followed by the secondary doses that are “administered after the initial dose,” and the tertiary doses are “administered after the secondary doses” and may be distinguished from the secondary doses “in terms of frequency of administration.” Ex. 1001, col. 3, ll. 36–44. Patent Owner does not expressly dispute Petitioner’s construction, other than to argue that, by 2011, a person of ordinary skill in the art would have understood “initial” and “secondary” doses to correspond to loading doses and “tertiary” doses to correspond to maintenance doses. PO Resp. 13 (citing Ex. 2056 ¶ 66; Ex. 2349, 6–11. Patent Owner contends that the purpose (and expected effect) of loading doses was to achieve visual acuity gains and retina drying, and the goal of less frequent maintenance doses was to maintain the efficacy achieved with loading doses. Id. at 14 (citing Ex. 2056 ¶ 66). As we have explained above, we do not find persuasive Patent Owner’s argument that the definition of these terms requires a high, or otherwise defined, degree of efficacy. As we stated in the -00881 and -01225 Decisions: Based on those express definitions in the Specification, we do not find cause to construe the terms differently. In particular, we do not find that the Specification requires the “tertiary doses” to maintain any efficacy gain achieved after the initial and secondary doses, or that the term suggests any specific level of efficacy. The Specification unequivocally states that “[t]he terms ‘initial dose,’ ‘secondary doses,’ and ‘tertiary doses,’ refer to the temporal sequence of administration of the VEGF antagonist.”” slip op. at 18

  • Claim Construction › Threshold & procedure › Whether a term needs construction (O2 Micro)Term construed board ownDecided for patent owner

    “If a claim limitation is directed to printed matter, the second step of the Praxair analysis is to determine whether the printed matter is functionally related to its “substrate.” Praxair, 890 F.3d at 1032. Printed matter that is functionally related to its substrate is given patentable weight. Id. (citing DiStefano, 808 F.3d at 850). However, “[w]here the printed matter is not functionally related to the substrate, the printed matter will not distinguish the invention from the prior art in terms of patentability.” Id. (quoting In re Ngai, 367 F.3d 1336, 1339 (Fed. Cir. 2004)). More specifically, printed matter is functionally related to its substrate when the language changes not mere thoughts or outcomes, but provides action steps that the method requires. See C R Bard Inc. v. AngioDynamics, Inc., 979 F.3d 1372, 1381 (Fed. Cir. 2020) (holding that the test for printed matter is whether it “merely informs people of the claimed information, or whether it instead interacts with the other elements of the claim to … cause a specific action in a claimed process.”); see also Bristol-Myers Squibb Co. v. Ben Venue Laboratories, Inc., 246 F.3d 1368, 1376 (Fed. Cir. 2001) (stating that language “is only a statement of purpose and intended result” where its “expression does not result in a manipulative difference in the steps of the claim”) (emphasis added).” slip op. at 21

  • Skill levelSkill level petitioner adoptedDecided for petitioner

    “A Person of Ordinary Skill in the Art Petitioner notes that the Petitioner in the ’00881 IPR proposed that a person of ordinary skill in the art would have: (1) knowledge regarding the diagnosis and treatment of angiogenic eye disorders, including the administration of therapies to treat said disorders; and (2) the ability to understand results and findings presented or published by others in the field. Pet. 17–18 (quoting -00881 IPR, Paper 94 at 9–10). Furthermore, it was asserted that such a person would typically have an advanced degree, such as an M.D. or Ph.D. (or equivalent, or less education but considerable professional experience in the medical, biotechnological, or pharmaceutical field), with practical academic or medical experience in (i) developing treatments for angiogenic eye disorders, including through the use of VEGF antagonists, or (ii) treating of same, including through the use of VEGF antagonists. Id. at 18 (citing -00881 IPR Paper 94 at 10). Patent Owner does not expressly contest this definition of a person of ordinary skill in the art in its Response. In the -01225 IPR, we adopted the same definition of a person of ordinary skill in the art for the challenged claims of the ’681 patent, concluding that that definition was consistent with the level of skill in the art. See -01225 IPR, Paper 96 at 52–53. Having previously adopted this definition of the level of skill in the art for the claims of the ’681 patent, we do so again in the present proceeding.” slip op. at 25

  Patent outcomesUS 10,130,681 unpatentable
  Claim construction§ 103 obviousnesscites Phillips · KSR · Graham
  Patents in suitUS 10,130,681
• Mylan Pharmaceuticals Inc. v. Regeneron Pharmaceuticals, Inc.All claims unpatentable
  PTAB · Jan 9, 2024 · IPR2023-00566 · APJ John G New · IPR · Final written decision

  Claims 1–9, 34–39, 41–43, and 45 are unpatentable as anticipated by Dixon; the Board did not reach the other grounds.

  RulingsFinal written decision

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

    “inter partes review are anticipated by Dixon and therefore unpatentable (Ground 1). Because we reach this conclusion, we do not reach Petitioner’s contentions that the claims are obvious on the basis of Ground 5. Nor does our analysis rely upon, or cite to, Exhibit 1058. We consequently dismiss as moot Patent Owner’s motion to exclude Exhibit 1058.” slip op. at 24

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

    “Owner and its experts proposed claim construction of “effectively treating” as meaning “noninferior,” “statistically noninferior,” or “comparable.” Pet. Reply 4. Petitioner asserts that Patent Owner, and its expert, Dr. Do, advance the proposed construction of “effectively treating, ” with no explanation for what that means, or how it comports with the challenged dependent claims that recite visual acuity limitations ranging from losing less than 15 letters to gaining more than 15 letters. Id. at 4–5.” slip op. at 32

  • ExcludeMotion to exclude, grantedMotion to exclude, deniedMixed

    “inter partes review are anticipated by Dixon and therefore unpatentable (Ground 1). Because we reach this conclusion, we do not reach Petitioner’s contentions that the claims are obvious on the basis of Ground 5. Nor does our analysis rely upon, or cite to, Exhibit 1058. We consequently dismiss as moot Patent Owner’s motion to exclude Exhibit 1058.” slip op. at 24

  Patent outcomesUS 10,888,601 unpatentable
  Claim construction§ 102 anticipationcites Phillips
  Patents in suitUS 10,888,601
• Mylan Pharmaceuticals Inc. v. Regeneron Pharmaceuticals, Inc.All claims unpatentable
  PTAB · Jan 9, 2024 · IPR2023-00533 · APJ John G New · IPR · Final written decision

  Claims 1–9, 34–39, 41–43, and 45 are unpatentable as anticipated by Dixon; the Board did not reach the other grounds.

  RulingsFinal written decision

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

    “inter partes review are anticipated by Dixon and therefore unpatentable (Ground 1). Because we reach this conclusion, we do not reach Petitioner’s contentions that the claims are obvious on the basis of Ground 5. Nor does our analysis rely upon, or cite to, Exhibit 1058. We consequently dismiss as moot Patent Owner’s motion to exclude Exhibit 1058.” slip op. at 24

  • Claim Construction › Intrinsic evidence (Phillips canons) › Preamble limiting or notPreamble limitingDecided for patent owner

    “Id. at 18. The similar language of the challenged claims of the ’601 patent, and our reasoning in the related -00881 Decision, compel the same conclusion here, i.e., that the preamble is limiting upon the claims.” slip op. at 43

  • ExcludeMotion to exclude, grantedMotion to exclude, deniedMixed

    “inter partes review are anticipated by Dixon and therefore unpatentable (Ground 1). Because we reach this conclusion, we do not reach Petitioner’s contentions that the claims are obvious on the basis of Ground 5. Nor does our analysis rely upon, or cite to, Exhibit 1058. We consequently dismiss as moot Patent Owner’s motion to exclude Exhibit 1058.” slip op. at 24

  Patent outcomesUS 10,888,601 unpatentable
  Claim construction§ 102 anticipationcites Phillips
  Patents in suitUS 10,888,601
• Mylan Pharmaceuticals Inc. v. Regeneron Pharmaceuticals, Inc.All claims unpatentable
  PTAB · Jan 9, 2024 · IPR2022-01225 · APJ John G New · IPR · Final written decision

  Claims 1, 3–11, 13, 14, 16–24, and 26 are unpatentable as anticipated by Dixon; the Board did not reach the remaining grounds.

  RulingsFinal written decision

  • Claim Construction › Intrinsic evidence (Phillips canons) › Preamble limiting or notPreamble limitingDecided for patent owner

    “Here, the claims are directed to methods of administering, i.e., using, a VEGF antagonist for an intended purpose of “treating an angiogenic eye disorder in a patient.” The Specification repeatedly characterizes the method as one for treating angiogenic eye disorders in patients. Apart from the preamble, the independent claims do not elsewhere recite or indicate any other use for the method steps comprising the administration of a VEGF antagonist. Thus, we determine that the preamble sets forth the essence of the invention—treating an angiogenic eye disorder in a patient. Additionally, we find that the preamble provides antecedent basis for claim terms “the patient” recited in the body of each independent claim, and “angiogenic eye disorders” recited in dependent claims 6, 7, 18, and 20. Indeed, without the preamble, it would be unclear to whom the doses of VEGF are administered. Thus, …in view of the evidence of record, namely, the claim language and the written description of the ’338 patent, we find that the preambles of method claims 1 and 14 are limiting insofar as they require “treating an angiogenic eye disorder in a patient.” Id. at 17–18 (citations omitted). We adopt this same reasoning here and find that the preamble of claim 1 reciting “[a] method for treating an angiogenic eye disorder in a patient” is limiting.” slip op. at 34

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

    “We adopt Petitioner’s proposed construction of the claim terms “initial dose,” “secondary dose,” and “tertiary dose.” Petitioner proposes adoption of the definitions expressly set forth in the Specification of the ’681 patent, viz., that the initial dose is the dose “administered at the beginning of the treatment regimen,” and is followed by the secondary doses that are “administered after the initial dose,” and the tertiary doses are “administered after the secondary doses” and may be distinguished from the secondary doses “in terms of frequency of administration.” Ex. 1001, col. 3, ll. 36–44.” slip op. at 37

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

    “If a claim limitation is directed to printed matter, the next step in the Praxair analysis is to determine whether the printed matter is functionally related to its “substrate.” Praxair, 890 F.3d at 1032. Printed matter that is functionally related to its substrate is given patentable weight. Id. (citing DiStefano, 808 F.3d at 850). However, “[w]here the printed matter is not functionally related to the substrate, the printed matter will not distinguish the invention from the prior art in terms of patentability.” Id. (quoting In re Ngai, 367 F.3d 1336, 1339 (Fed. Cir. 2004)). More specifically, printed matter is functionally related to its substrate when the language changes not mere thoughts or outcomes, but provides action steps that the method requires. See C R Bard Inc. v. AngioDynamics, Inc., 979 F.3d 1372, 1381 (Fed. Cir. 2020) (holding that the test for printed matter is whether it “merely informs people of the claimed information, or whether it instead interacts with the other elements of the claim to … cause a specific action in a claimed process.”); see also Bristol-Myers Squibb Co. v. Ben Venue Laboratories, Inc., 246 F.3d 1368, 1376 (Fed. Cir. 2001) (stating that language “is only a statement of purpose and intended result” where its “expression does not result in a manipulative difference in the steps of the claim”) (emphasis added).” slip op. at 46

  • Skill levelSkill level petitioner adoptedDecided for petitioner

    “A Person of Ordinary Skill in the Art Petitioner contends that a person of ordinary skill in the art would have: (1) knowledge regarding the diagnosis and treatment of angiogenic eye disorders, including the administration of therapies to treat said disorders; and (2) the ability to understand results and findings presented or published by others in the field. Pet. 28. Petitioner asserts that such a person would typically have an advanced degree, such as an M.D. or Ph.D. (or equivalent, or less education but considerable professional experience in the medical, biotechnological, or pharmaceutical field), with practical academic or medical experience in (i) developing treatments for angiogenic eye disorders, including through the use of VEGF antagonists, or (ii) treating of same, including through the use of VEGF antagonists. Id. at 28–29 (citing Ex. 1002 ¶¶ 27–29; Ex. 1003 ¶¶ 21–25). Patent Owner does not expressly contest this definition of a person of ordinary skill in the art in its Response. Because we find Petitioner’s definition to be consistent with the level of skill in the art (see, e.g., Exs. 1006, 1020), we adopt Petitioner’s definition.” slip op. at 52

  Patent outcomesUS 10,130,681 unpatentable
  Claim construction§ 102 anticipation§ 103 obviousnesscites Phillips
  Patents in suitUS 10,130,681
• JSR Corporation / JSR Life Sciences, LLC v. Cytiva Bioprocess R&D ABSome claims unpatentable
  PTAB · May 18, 2023 · IPR2022-00041 · APJ Ulrike W Jenks · IPR · Final written decision

  Claims 1–3, 5–7, 10–16, 18–20, and 23–30 are unpatentable as obvious; claims 4 and 17 were not shown unpatentable because the art did not establish expected Fab binding.

  RulingsFinal written decision

  • Skill levelSkill level petitioner adoptedDecided for petitioner

    “Petitioner asserts that a person of ordinary skill in the art would have had (1) at least an advanced degree (e.g., a Master’s or Ph.D.) in biochemistry, process chemistry, protein chemistry, chemical engineering, molecular and structural biology, biochemical engineering, or similar disciplines; (2) several years of post-graduate training or related experience (including industry experience) in one or more of these areas; and (3) an understanding of the various factors involved in purifying proteins using chromatography.[] Such a person would have had multiple years of experience with affinity ligand design and protein purification. Pet. 9–10 (citing Ex. 1002 ¶¶ 13–14). Patent Owner does not dispute Petitioner’s definition of the person of ordinary skill. See generally PO Resp. Because Petitioner’s proposed definition is unopposed and appears consistent with the Specification and art of record, we apply it here.” slip op. at 13

  • Claim Construction › Threshold & procedure › Whether a term needs construction (O2 Micro)Term construed petitioner constructionDecided for petitioner

    “According to the Specification, “the present invention . . . relates to a multimeric chromatography ligand (also denoted a ‘multimer’) comprised of at least two Domain C units, or a functional fragments or variants thereof.” Ex. 1001, 7:27–30. The Specification additionally recites that a multimer containing only domain C units can, however, include linkers. Id. 7:39–41. In addition, the Specification describes that “the multimer comprises one or more additional units, which are different from Domain C.” Id. 7: 44–45. Based on these disclosures in the Specification, a multimer is composed of at least two or more monomers. Because Petitioner’s construction is consistent with the ’142 patent’s express construction of the term, and because Patent Owner agrees with Petitioner’s construction, we apply it here.” slip op. at 14

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

    “knowledge that any one of the five SPA IgG binding domains are known to bind IgG and can function as a ligand for the purification of antibodies. Linhult and Abrahmsén both expressly suggest that the glycine codon at position 29 can be mutated for an alanine codon in any one of the SPA IgG binding domains E, D, A, B, or C. Ex. 1004, 2; Ex. 1005, 2:32–37. Here, the SPA IgG binding domains comprise a short list of 5 members: E, D, A, B, or C. Of these 5 members, the glycine at position 29 in domain B has already been mutated to an alanine to create a domain Z which has been shown to retain IgG binding activity. Ex. 1004, 6 (Fig. 3). Figure 1A of Linhult is reproduced below. Linhult’s Figure 1A, reproduced above, shows the amino acid alignments of the Z, Z(F30A) and the five homologous domains (E, D, A, B, and C). The three boxes show the α-helices. Ex. 1004, 2; Ex. 1005, Fig. 2. Here, Linhult and Abrahmsén show that the IgG binding domains of SPA – E, D, A, B, and C share many structural similarities. See Ex. 1004, 2 (Fig. 1(a) (reproduced above)); Ex. 1005, 3:25–35. As discussed in our Institution Decision (Dec. 30–31), there are a finite number—five (5)—SPA IgG binding domains and each possesses the dipeptide sequence Asp-Gly known to a be a target for alkaline protein degradation. Therefore, the solution of mutating the glycine at position 29 for an alanine to remove the alkaline sensitive sequence is not a product of innovation, but of ordinary skill and common sense. See Wm. Wrigley Jr. Co. v. Cadbury Adams USA LLC, 683 F.3d 1356, 1364-65 (Fed. Cir. 2012) (quoting KSR, 550 U.S. at 421). It is well established that” slip op. at 37

  • Obviousness (§103) › KSR rationalesUnpatentable

    “Here, the teachings of Linhult, Abrahmsén, and Hober suggest mutating the glycine at position 29 for an alanine in any one of the IgG binding domains of E, D, A, B, or C of SPA in order to avoid protein degradation. Ex. 1004, 2; Ex. 1005, 5:4–9. We, therefore, agree with Petitioner that the art expressly suggests that the glycine codon can be mutated for an alanine codon in any one of the SPA IgG binding domains E, D, A, B, or C. Pet. 23 (citing Ex. 1002 ¶¶ 99–111). Attaching any one of SPA mutated IgG binding domains E D A B or C to a matrix using “known ligand-construction methods to yield a predictable result[] (e.g., the claimed affinity chromatography matrix)” would have been obvious. Pet. 25 (citing Ex. 1002 ¶ 130). As the Federal Circuit has explained, “[w]here a skilled artisan merely pursues ‘known options’ from ‘a finite number of identified, predictable solutions,’ the resulting invention is obvious under Section 103.” In re Cyclobenzaprine Hydrochloride Extended-Release Capsule Patent Litig., 676 F.3d 1063, 1070 (Fed. Cir. 2012) (quoting KSR, 550 U.S. at 421). Accordingly, we agree with Petitioner that the combination of Linhult Abrahmsén, and Hober expressly suggests mutating the glycine codon for an alanine codon in any one of the SPA IgG binding domains E, D, A, B, or C. Pet. 23 (citing Ex. 1002 ¶¶ 99–111). We also agree that the cited art teaches using these mutant SPA domains in column chromatography for the isolation of antibodies.” slip op. at 36

  Patent outcomesUS 10,343,142 mixed
  Claim construction§ 103 obviousnesscites Phillips · KSR · Graham
  Patents in suitUS 10,343,142
• Mylan Pharmaceuticals Inc. / Celltrion, Inc. et al. v. Regeneron Pharmaceuticals, Inc.All claims unpatentable
  PTAB · Nov 9, 2022 · IPR2022-00298 · APJ Erica A Franklin · IPR · Final written decision

  Claims 1, 3–11, 13, 14, 16–24, and 26 are unpatentable as anticipated by Dixon; the Board did not reach the other instituted grounds.

  RulingsFinal written decision

  • Skill levelSkill level petitioner adoptedDecided for petitioner

    “Having considered the arguments and evidence, we maintain that Petitioners’ definition of one of ordinary skill in the art is reasonable and consistent with the ’338 patent and the prior art of record. On the other hand, we find Patent Owner’s definition to be inappropriately limited to those having “firsthand experience” regarding the diagnosis and treatment of angiogenic eye disorders, as explained by Dr. Do. See Ex. 2051 ¶ 28. While it may be that the claimed methods would be performed an ophthalmologist, a person having ordinary skill in the art need not be limited to those more appropriately considers that knowledge regarding the diagnosis and treatment of angiogenic eye disorders, including the administration of therapies to treat said disorders, may be possessed by other professionals that are not ophthalmologists. Accordingly, we adopt Petitioners’ definition for purposes of this Decision.” slip op. at 10

  • Claim Construction › Intrinsic evidence (Phillips canons) › Preamble limiting or notPreamble limitingDecided for patent owner

    “preamble of method claims 1 and 14, i.e., “[a] method for treating an angiogenic eye disorder in a patient” is limiting. Although we agree with Petitioners that the preamble sets forth “‘a statement of purpose or intended’ use for the claimed dosing regimen,” see Pet. 17, that does not the end our inquiry. As noted in the Institution Decision, the Federal Circuit has explained that its case law does not support a “binary distinction between statements of mere intended purpose on the one hand and limiting preambles on the other.” Eli Lilly and Company v. Teva Pharms. Int’l GmbH, 8 F.4th 1331, 1340 (Fed. Cir. 2021). Rather, as the Federal Circuit reiterated, “there is no ‘litmus test’ for determining whether a preamble is limiting.” Id. (citing Bicon, Inc. v. Straumann Co., 441 F.3d 945, 952 (Fed. Cir. 2006) and Catalina Mktg. Int'l, Inc. v. Coolsavings.com, Inc., 289 F.3d 801, 808 (Fed. Cir. 2002)). As the Court instructed, we consider whether to treat a preamble as a claim limitation based upon “the facts [in this] case in light of the claim as a whole and the invention described in the patent.” Id. (quoting Storage Tech. Corp. v. Cisco Sys., Inc., 329 F.3d 823, 831 (Fed. Cir. 2003)).” slip op. at 17

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

    “or that the administered doses are “therapeutically effective” separately or cumulatively. Instead, the claimed method focuses on treating an angiogenic eye disorder with a specific compound, i.e., a VEGF antagonist, based on a specific temporal regimen, i.e., sequentially administering an initial dose, followed by a prescribed time frame for secondary and tertiary dose(s). As discussed above, we determined that the preamble limits the claims in terms of requiring the doses of VEGF antagonist administered to be for the purpose of treating an angiogenic eye disorder in a patient. We find that the intrinsic evidence supports finding that it is the administration of the VEGF antagonist to such patient for the purpose of providing an improvement of or beneficial effect on their angiogenic eye disorder that satisfies the “treating” portion of the preamble.” slip op. at 19

  • Claim Construction › Intrinsic evidence (Phillips canons) › Lexicography (patentee as own lexicographer)Term construed petitioner constructionDecided for petitioner

    “arguments and the evidence, we find that the Specification expressly defines the terms “initial dose,” “secondary doses,” and “tertiary doses.” The Specification states, refer to the temporal sequence of administration of the VEGF antagonist. Thus, the “initial dose” is the dose which is administered at the beginning of the treatment regimen (also referred to as the “baseline dose”); the “secondary doses” are the doses which are administered after the initial dose; and the “tertiary doses” are the doses which are administered after the secondary doses. Ex. 1001, 3:31–38 (emphasis added). Based on those express definitions in the Specification, we do not find cause to construe the terms differently. In particular, we do not find that the Specification requires the “tertiary doses” to maintain any efficacy gain achieved after the initial and secondary doses, or that the term suggests any specific level of efficacy. The Specification unequivocally states that “[t]he terms ‘initial dose,’ ‘secondary doses,’ and ‘tertiary doses,’ refer to the temporal sequence of administration of the VEGF antagonist,” and that “the ‘tertiary doses’ are the doses which are administered after the secondary doses.” Ex. 1001, 3:31–38 (emphasis added). Patent Owner has not directed us to any portion of the Specification or other persuasive evidence that supports adding an efficacy requirement to that definition.” slip op. at 24

  Patent outcomesUS 9,254,338 unpatentable
  Claim construction§ 102 anticipationcites Phillips · Graham
  Patents in suitUS 9,254,338
• Mylan Pharmaceuticals Inc. / Celltrion, Inc. et al. v. Regeneron Pharmaceuticals, Inc.All claims unpatentable
  PTAB · Nov 9, 2022 · IPR2022-00258 · APJ Erica A Franklin · IPR · Final written decision

  Claims 1, 3–11, 13, 14, 16–24, and 26 are unpatentable as anticipated by Dixon; the Board did not reach the other grounds.

  RulingsFinal written decision

  • Skill levelSkill level petitioner adoptedDecided for petitioner

    “Having considered the arguments and evidence, we maintain that Petitioners’ definition of one of ordinary skill in the art is reasonable and consistent with the ’338 patent and the prior art of record. On the other hand, we find Patent Owner’s definition to be inappropriately limited to those having “firsthand experience” regarding the diagnosis and treatment of angiogenic eye disorders, as explained by Dr. Do. See Ex. 2051 ¶ 28. While it may be that the claimed methods would be performed an ophthalmologist, a person having ordinary skill in the art need not be limited to those more appropriately considers that knowledge regarding the diagnosis and treatment of angiogenic eye disorders, including the administration of therapies to treat said disorders, may be possessed by other professionals that are not ophthalmologists. Accordingly, we adopt Petitioners’ definition for purposes of this Decision.” slip op. at 10

  • Claim Construction › Intrinsic evidence (Phillips canons) › Preamble limiting or notPreamble limitingDecided for patent owner

    “preamble of method claims 1 and 14, i.e., “[a] method for treating an angiogenic eye disorder in a patient” is limiting. Although we agree with Petitioners that the preamble sets forth “‘a statement of purpose or intended’ use for the claimed dosing regimen,” see Pet. 17, that does not the end our inquiry. As noted in the Institution Decision, the Federal Circuit has explained that its case law does not support a “binary distinction between statements of mere intended purpose on the one hand and limiting preambles on the other.” Eli Lilly and Company v. Teva Pharms. Int’l GmbH, 8 F.4th 1331, 1340 (Fed. Cir. 2021). Rather, as the Federal Circuit reiterated, “there is no ‘litmus test’ for determining whether a preamble is limiting.” Id. (citing Bicon, Inc. v. Straumann Co., 441 F.3d 945, 952 (Fed. Cir. 2006) and Catalina Mktg. Int'l, Inc. v. Coolsavings.com, Inc., 289 F.3d 801, 808 (Fed. Cir. 2002)). As the Court instructed, we consider whether to treat a preamble as a claim limitation based upon “the facts [in this] case in light of the claim as a whole and the invention described in the patent.” Id. (quoting Storage Tech. Corp. v. Cisco Sys., Inc., 329 F.3d 823, 831 (Fed. Cir. 2003)). Here, the claims are directed to methods of administering, i.e., using, a VEGF antagonist for an intended purpose of “treating an angiogenic eye disorder in a patient.” See Claims 1 and 14, Ex. 1001, 23:2–3; 24:3–4. The angiogenic eye disorders in patients. See, e.g., id. at 1:18–20, 63–66, 2:23– 27; 3:19–20; 5:11–13. Apart from the preamble, the independent claims do not elsewhere recite or indicate any other use for the method steps comprising the administration of a VEGF antagonist. Thus, we determine that the preamble sets forth the essence of the invention—treating an angiogenic eye disorder in a patient. As the Federal Circuit explained in Boehringer Ingelheim Vetmedica, Inc. v. Schering-Plough Corp., 320 F.3d 1339 (Fed. Cir. 2003), “preamble language will limit the claim if it recites not merely a context in which the invention may be used, but the essence of the invention without which performance of the recited steps is nothing but an academic exercise,” and that this principle frequently holds true for method claims. Id. at 1345 (citing Griffin v. Bertina, 285 F.3d 1029, 1033 (Fed. Cir. 2002)). We find that such is the case here. Additionally, we find that the preamble provides antecedent basis for claim terms “the patient” recited in the body of each independent claim, and “angiogenic eye disorders” recited in dependent claims 6, 7, 18, and 20. Indeed, without the preamble, it would be unclear to whom the doses of VEGF are administered. Thus, in view of Federal Circuit case law regarding statements of intended purpose in claims directed to method of using compositions, and in view of the evidence of record, namely, the claim language and the written description of the ’338 patent, we find that the preambles of method claims 1 and 14 are limiting insofar as they require “treating an angiogenic eye disorder in a patient.”” slip op. at 17

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

    “We begin by noting that the claims do not recite any dosage amounts or that the administered doses are “therapeutically effective” separately or cumulatively. Instead, the claimed method focuses on treating an angiogenic eye disorder with a specific compound, i.e., a VEGF antagonist, based on a specific temporal regimen, i.e., sequentially administering an initial dose, followed by a prescribed time frame for secondary and tertiary dose(s). As discussed above, we determined that the preamble limits the claims in terms of requiring the doses of VEGF antagonist administered to be for the purpose of treating an angiogenic eye disorder in a patient. We find that the intrinsic evidence supports finding that it is the administration of the VEGF antagonist to such patient for the purpose of providing an improvement of or beneficial effect on their angiogenic eye disorder that satisfies the “treating” portion of the preamble. regarding the “Amount of VEGF Antagonist Administered.” See Ex. 1001, 6:29–7:14. In that discussion, the Specification explains, The amount of VEGF antagonist administered to the patient in each dose is, in most cases, a therapeutically effective amount. As used herein, the phrase “therapeutically effective amount” means a dose of VEGF antagonist that results in a detectable improvement in one or more symptoms or indicia of an angiogenic eye disorder, or a dose of VEGF antagonist that inhibits, prevents, lessens or delays the progression of an angiogenic eye disorder. Id. at 6:48–55 (emphasis added). That description, along with the absence of the phrase “therapeutically effective” in the claims,11 signals for us the inventors’ intention to not limit the claims to the administration of doses that ultimately prove to be therapeutically effective in a given patient. Instead, the Specification describes administration of VEGF antagonist doses for treating angiogenic eye disorder in a manner that encompasses doses that result in disclosed improvements and benefits, referred to as “therapeutically effective amounts,” and doses that do not. Indeed, as guidance, the Specification discloses that “a therapeutically effective amount can be from about 0.05 mg to about 5 mg,” without any guarantee that any particular dosage regimen administered within that range of dosage amounts will necessarily be “therapeutically effective,” and without limiting the treatment methods based upon such results. Ex. 1001, 6:55–58 (emphasis added).” slip op. at 19

  • Claim Construction › Intrinsic evidence (Phillips canons) › Lexicography (patentee as own lexicographer)Term construed petitioner constructionDecided for petitioner

    “arguments and the evidence, we find that the Specification expressly defines the terms “initial dose,” “secondary doses,” and “tertiary doses.” The Specification states, refer to the temporal sequence of administration of the VEGF antagonist. Thus, the “initial dose” is the dose which is administered at the beginning of the treatment regimen (also referred to as the “baseline dose”); the “secondary doses” are the doses which are administered after the initial dose; and the “tertiary doses” are the doses which are administered after the secondary doses. Ex. 1001, 3:31–38 (emphasis added). Based on those express definitions in the Specification, we do not find cause to construe the terms differently. In particular, we do not find that the Specification requires the “tertiary doses” to maintain any efficacy gain achieved after the initial and secondary doses, or that the term suggests any specific level of efficacy. The Specification unequivocally states that “[t]he terms ‘initial dose,’ ‘secondary doses,’ and ‘tertiary doses,’ refer to the temporal sequence of administration of the VEGF antagonist,” and that “the ‘tertiary doses’ are the doses which are administered after the secondary doses.” Ex. 1001, 3:31–38 (emphasis added). Patent Owner has not directed us to any portion of the Specification or other persuasive evidence that supports adding an efficacy requirement to that definition.” slip op. at 24

  Patent outcomesUS 9,254,338 unpatentable
  Claim construction§ 102 anticipationcites Phillips · Graham
  Patents in suitUS 9,254,338
• Mylan Pharmaceuticals Inc. / Celltrion, Inc. et al. v. Regeneron Pharmaceuticals, Inc.All claims unpatentable
  PTAB · Nov 9, 2022 · IPR2022-00257 · APJ John G New · IPR · Final written decision

  Claims 1 and 8–12 are unpatentable: Dixon anticipates claims 1 and 9–12 and claim 8, and the Board also finds the claims obvious over Dixon.

  RulingsFinal written decision

  • PTAB / AIA Trials › Joinder §315(c) / SAS all-or-nothingJoinder, grantedGranted

    “On February 9, 2022, we instituted an inter partes review in IPR2022- 00257 and granted the motion for joinder with IPR2021-00880, adding Celltrion, Inc. as a petitioner in the instant proceeding. Paper 35. On the same date, we also instituted an inter partes in IPR2022-00301 and likewise granted the motion for joinder with IPR2021-00880, adding Apotex, Inc. as a petitioner in the instant proceeding. Paper 36. We refer to Mylan Pharmaceuticals, Inc., Celltrion, Inc. and Apotex, Inc., collectively, as “Petitioner.”” slip op. at 3

  • ExcludeMotion to exclude, deniedDenied

    “We are not persuaded by Petitioner’s argument that the challenged Exhibits are not authenticated. Federal Rule of Evidence 901 sets a relatively low bar for authentication. See Comcast, 2020 WL 4687062, at *28. Rule 901(a) states: “To satisfy the requirement of authenticating or identifying an item of evidence, the proponent must produce evidence sufficient to support a finding that the item is what the proponent claims it is.” Fed. R. Evid. 901(a). By way of example, Rule 901(b)(1) states that a witness with knowledge can provide authenticating testimony that an item is what it is claimed to be. Fed. R. 901(b)(1).” slip op. at 15

  • Strike new argumentNew argument consideredDenied

    “We deny the motion to exclude the referenced argument in Petitioners’ Reply, as well as the invitation to consider the motion as one to strike the argument. As Patent Owner notes in the motion, Patent Owner raised this issue previously in this proceeding. PO Mot. Exclude 5. At that time, we denied Patent Owner’s request for authorization to file a motion to strike the referenced argument in the Reply. It is improper for Patent Owner to now seek to strike the argument in a motion to exclude. A motion to exclude is not the proper vehicle to address arguments or evidence that a party believes exceeds the proper scope of a reply. See USPTO, Consolidated Trial Practice Guide (2019) at 79, available at: https://www.uspto.gov/sites/default/files/documents/tpgnov.pdf?MURL= (last visited October 27, 2022) (“CTPG”). Moreover, as Petitioners correctly assert, Patent Owner has failed to satisfy the prerequisite for filing a motion to exclude by failing to timely file an objection. See 37 C.F.R. 42.64(b)(1); CTPG 78–79. Patent Owner has not been left without an opportunity to address the Reply argument. When we denied authorization to file a motion to strike, we authorized Patent Owner to file, with its Sur-Reply, a table identifying any portion of the Reply that Patent Owner considers to have exceeded the scope of the Reply. Further, we explained that Patent Owner, alternatively, may address that contention, or the merits of any newly-raised arguments or evidence in its Sur-Reply. Indeed, Patent Owner addressed the issue in its 26 Sur-Reply for our consideration. Thus, Patent Owner had sufficient opportunity to identify in its Sur-Reply its contentions regarding Petitioners’ allegedly inappropriate Reply argument and took advantage of that opportunity. That is sufficient for us to consider the issue and determine whether such argument should be disregarded. See CTPG 80.” slip op. at 26

  • Skill levelSkill level petitioner adoptedDecided for petitioner

    “We find that Petitioner’s definition is the better definition for purposes of this proceeding. We acknowledge that the claims of the ’069 patent are directed to a “method for treating an angiogenic eye disorder in a patient” 29 and that the actual practice of the method would therefore seem to be limited to those who have the ability to treat patients, i.e., physicians, etc. However, we find Patent Owner’s definition to be unduly limiting. Individuals who are involved in drug development or sub-clinical level testing of drugs for treating eye disorders may be extremely knowledgeable about the development of the treatment of eye disorders and drug development, and able to comprehend and evaluate the teachings of the prior art. See, e.g., Pet. 25. Such individuals might not possess an M.D. degree, but instead possess a Ph.D. in a “biotechnological, or pharmaceutical field,” or a lesser degree with a corresponding increased depth of experience, as suggested by Petitioner. We agree that such individuals should be considered persons of ordinary skill in the art. We also find that Petitioner’s definition is commensurate with the level of skill reflected in the prior art. See, e.g., Exs. 1006, 1010, 1030, 1033; see also Okajima v. Bourdeau, 261 F.3d 1350, 1355 (Fed. Cir. 2001) (explaining that specific findings regarding ordinary skill level are not required “where the prior art itself reflects an appropriate level and a need for testimony is not shown” (quoting Litton Indus. Prods., Inc. v. Solid State Sys. Corp., 755 F.2d 158, 163 (Fed. Cir. 1985))). We consequently adopt Petitioner’s definition of a person of ordinary skill in the art has having an M.D. or Ph.D. or equivalent, or less education but considerable professional experience in the medical, biotechnological, or pharmaceutical field, and having practical academic or medical experience in developing treatments 30 for angiogenic eye disorders or treating angiogenic eye disorders including through the use of VEGF antagonists.” slip op. at 29

  Patent outcomesUS 9,669,069 unpatentable
  Claim construction§ 102 anticipation§ 103 obviousnesscites Phillips
  Patents in suitUS 9,669,069

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.