As we noted previously on the blog (see here, here, here, and here), issues proving up prior art during inter partes review proceedings arise regularly at the PTAB.

Our colleagues, Miguel Bombach and Brandon White, reviewed the current state of PTAB rulings, and synthesized their findings in a short research paper, now available, entitled Inter Partes Review Practice: Challenges in Proving Up Publications as Prior Art. [PDF]
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Previously, Emily Greb posted on the Supreme Court’s decision in SAS Inst. Inc. v. Iancu, Dir. U.S. Pat. & Trademark Off., 138 S. Ct. 1348 (2018), which held that when the Board institutes an inter partes review, it must decide the patentability of all claims challenged in the IPR.

Now, Emily and Tyler Bowen, with assistance from Gene W. Lee, Bryan D. Beel, and Maria A. Stubbings, have published a short research paper entitled The Supreme Court’s SAS Decision: Has All-Or-Nothing Institution Created A Wave Of Change? [PDF]
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IPR petitioners Proppant Express Investments, LLC and Proppant Express Solutions, LLC (collectively, “PropX”) have a pending instituted inter partes review (IPR) on certain claims of U.S. Patent No. 9,511,929 (“the ’929 patent”).  Unfortunately for PropX, it mistakenly grouped its arguments against one of the dependent claims—claim 4—into the wrong ground, which led the Patent Trial and Appeal Board (the “Board”) to deny institution of IPR of that claim, due to inadequate support.  IPR2017-02103, Paper 19 at 32, 34.  After institution, PropX sought to amend the petition to move claim 4 into the proper ground.  The Board denied PropX’s request because PropX was not diligent: despite Patent Owner’s (“Oren”) Preliminary Response pointing out PropX’s mistake, PropX failed to notice the mistake until after institution.  IPR2017-02103, Paper 22.

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In the chemical and biological arts, it is common for patent challengers to allege obviousness based upon prior art disclosures of ranges combined with “routine optimization” by one skilled in the art.  In E.I. du Pont de Nemours & Co. v. Synvina C.V., No. 17-1977 (Fed. Cir. Sept. 17, 2018), the Federal Circuit reversed the PTAB’s (“Board”) final written decision upholding Synvina’s U.S. Patent No. 8,865,921 (“’921 patent”) as non-obvious, in response to du Pont’s inter partes review (“IPR”) challenge on such grounds.  In particular, in E.I. du Pont, the Court found that the patentee failed to demonstrate that 1) the claimed range produced a new and unexpected result, different in kind and not merely in degree from the prior art, 2) the optimized parameter was not recognized as a result-effective variable, 3) the disclosure of broad ranges did not invite more than routine optimization, or 4) that the prior art taught away from the range.

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This morning, the US Patent and Trademark Office issued its final rule implementing district court-style claim construction at the PTAB, replacing the “broadest reasonable interpretation” standard.  The official text of the rule will publish in the Federal Register on October 11, 2018, in final form.  The new rule is not retroactive and will apply to petitions filed on or after the effective date of the final rule, which is Nov. 13, 2018 (i.e., the first federal business day after 30 days from publication). [Note: 30 days from an October 11, 2018 publication falls on Saturday, November 10, 2018, but the PTO’s press release [PDF] reports the effective date as November 13, 2018.]

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On August 27, 2018, the Federal Circuit in Ericsson Inc. v. Intellectual Ventures I LLC, vacated the Patent Trial and Appeal Board’s (“PTAB”) final written decision in an inter partes review (IPR) and remanded for the PTAB to properly consider all portions of the petitioner’s reply.  No. 17-1521, slip op. at 13 (Aug. 27, 2018).
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We wrote previously regarding Incyte Corp. v. Concert Pharms., Inc., IPR2017-01256, in which the Board reached different conclusions regarding the availability of two pieces of prior art, over a dissent by Judge Fitzpatrick.  Regarding art referred to as the Concert Backgrounder, the Board’s earlier ruling found public accessibility where the Backgrounder was 1) identified on a cached WebCite page, 2) cited in an International Search Report for a patent application, and 3) used in a law review article that cited the WebCite page.  In a new decision in the same case, the Board ruled on Petitioner’s motion for additional discovery regarding public availability of the Concert Backgrounder, granting the discovery in part.  Interestingly, the Board declined to allow discovery that it viewed as changing the Petitioner’s theory of public availability of the art.
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