Tag: PTAB

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US: Estoppel Attaches Even If Dismissed Without Prejudice
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US PTAB Trial Practice Guide Updates
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Petitioners bear the burden of proving invalidity of amended claims in IPR proceedings
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Federal Circuit Instructs the PTAB on Written Description in University Interference Proceeding
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Federal Circuit Confirms Cuozzo Does Not Disturb § 314(d) Bar on Appellate Review of PTAB Reconsideration of IPR Institutions

US: Estoppel Attaches Even If Dismissed Without Prejudice

On August 16, 2018, the U.S. Federal Circuit addressed when the inter partes review (IPR) time bar clock begins to tick.  See Click-to-Call Tech. LP v. Ingenio, Inc., Slip Op. 2015-1242 (Fed. Cir. Aug. 16, 2018).  The en banc Federal Circuit addressed whether the one year estoppel clock begins for a properly served complaint when the complaint is subsequently dismissed without prejudice.  The panel found that the § 315(b) time bar applies.  The filing of such a complaint, though later voluntarily dismissed, has previously formed the basis for declaratory judgment jurisdiction where the initial defendant later brings a validity challenge. See TransWeb, LLC v. 3M Innovative Props. Co., 812 F.3d 1295, 1300 (Fed. Cir. 2016).

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US PTAB Trial Practice Guide Updates

On Monday, August 13, 2018, the U.S. Patent Trial and Appeal Board (PTAB) issued a notice updating the Trial Practice Guide. The update provided revisions to Sections I.G. (Expert Testimony), II.A.3. (Word Count and Page Limits), II.D.2. (Considerations in Instituting a Review), II.I. (Reply to Patent Owner Response and Reply for a Motion to Amend; Sur-Replies), II.K. (Challenging Admissibility; Motions to Exclude; Motions to Strike), II.M. (Oral Hearing), and Appendix A (Sample Scheduling Order).  The update further contemplates additional revisions that will be released on a rolling basis when applicable.

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Petitioners bear the burden of proving invalidity of amended claims in IPR proceedings

On October 4, 2017, the Federal Circuit held en banc that the proper interpretation of 35 U.S.C. 316(d) and (e) requires the Petitioner in an inter partes review (IPR) to prove all propositions of unpatentability, including for amended claims.  Aqua Prods., Inc. v. Matal, No. 2015-1177 (Fed. Cir. Oct. 4, 2017).  The en banc Court further determined that the PTAB must consider the entirety of the record when assessing the patentability of amended claims under 318(a), not merely the face of a motion to amend.

The Aqua case resulted in five opinions totaling 148 pages, each presenting views on judgment and underlying rationale, ultimately leading to a narrowly tailored holding.  In the decision, the Federal Circuit made clear that the burden of persuasion of patentability does not rest with the Patent Owner; instead, it is left to the Petitioner to establish that any proposed amended claims are not patentable.

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Federal Circuit Instructs the PTAB on Written Description in University Interference Proceeding

On June 27, 2017, the U.S. Federal Circuit vacated and remanded the Patent Trial and Appeal Board’s (Board) decisions in three interference proceedings between the Board of Trustees of Leland Stanford Junior University (Stanford) and the Chinese University of Hong Kong (CUHK) (Case No. 2015-2011).

Competing inventors at Stanford and CUHK developed methods for diagnosing aneuploidies—conditions characterized by an abnormal number of chromosomes (e.g., Down’s Syndrome and Turner’s Syndrome)—using maternal blood samples.  Maternal blood contains very small amounts of fetal DNA, and maternal blood sampling is far less invasive than previous methods of sampling fetal DNA.  Competing inventors developed techniques for detecting the fetal DNA in maternal blood.

A Stanford application was filed in 2007 with claims to analyzing certain “target sequences” of fetal DNA. A CUHK application, published in 2009, described a “random sequencing” method. This method uses a massively parallel sequencing (MPS) technique that does not require use of “target sequences.” After the CUHK application published, Stanford cancelled its original claims and replaced them with claims to sampling “randomly selected” DNA fragments using MPS. The 2007 Stanford application had disclosed that “the Illumina [DNA] sequencing platform” could be used to perform MPS.

Both Stanford and CUHK requested interferences before the Board to determine who invented the random sequencing method. CUHK claimed that, in 2011, Stanford saw CUHK’s claims to random MPS, and changed its application to claim that technique. CUHK moved to have Stanford’s claims held unpatentable for lack of written description support for random MPS.  The Board found that Stanford’s specification disclosed “targeted” rather than “random” MPS, and would not have indicated to one of ordinary skill in the art that the inventor was in possession of the claimed random MPS method.  It held Stanford’s claims unpatentable for lack of written description.

The Federal Circuit, inter alia, vacated the Board’s decision, stating that the Board erred in analyzing written description, and remanded the case.  The Circuit first found the Board erred by relying on CUHK’s expert testimony and several publications discussing a DNA sequencing platform that differed from the Illumina platform.  The Circuit further stated that the Board erred because “the Board’s task was to determine whether the [Stanford specification’s] written description discloses random MPS,” “not whether the description does not preclude targeted MPS.”  Finally, the Circuit stated that the Board failed to compare specific sentences and phrases referencing the sequencing process of the Stanford specification to the Stanford claims, e.g., the specification phrase “using the attachment of randomly fragmented genomic DNA.”

On remand, the Circuit instructed the Board to examine whether a person of ordinary skill in the art would have understood that the Stanford specification disclosed random MPS sequencing, as opposed to whether the specification did not preclude targeted MPS sequencing. Specifically, it instructed the Board to determine whether a person of ordinary skill would have known, as of the Stanford priority date, that the reference to Illumina products meant random MPS sequencing as recited in the claims, by examining pre-filing date factual record evidence.

By: Peter Giunta and Jenna Bruce

Federal Circuit Confirms Cuozzo Does Not Disturb § 314(d) Bar on Appellate Review of PTAB Reconsideration of IPR Institutions

The Federal Circuit’s recent decision in Medtronic, Inc. v. Robert Bosch Healthcare Systems, Inc., addressed the effect of the Supreme Court’s decision in Cuozzo Speed Techs., LLC v. Lee, 136 S. Ct. 2131 (2016), on the issue of whether termination of instituted inter partes review (“IPR”) proceedings based on a failure to meet the statutory filing requirements for a petition (namely, to identify all real parties-in-interest) would be barred from review by 35 U.S.C. § 314(d). The Court found that Cuozzo did not disturb Federal Circuit precedent as to the § 314(d) bar on review for reconsiderations of institution decisions.

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By: Rebecca M. Cavin, James (Kwangho) Jang, Jason A. Engel                     

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