News & Analysis as of

Inter Partes Review (IPR) Proceeding Collateral Estoppel Patent Invalidity

Akin Gump Strauss Hauer & Feld LLP

Federal Circuit: PTAB Decision of Invalidity Cannot Estop District Court Litigation on Different Claims from the Same Patent, Even...

The Federal Circuit recently refused to apply collateral estoppel to claims of a patent asserted in district court litigation based on a Patent Trial and Appeal Board (PTAB) decision finding similar claims from the same...more

Jones Day

Federal Circuit Reverses District Court’s Application Of Collateral Estoppel

Jones Day on

Kroy IP Holdings, LLC sued Groupon, Inc., alleging infringement of 13 claims of U.S. Patent No. 6,061,660 (“’660 patent’), which relates to incentive programs over computer networks. Those claims were invalidated via...more

Sunstein LLP

Collateral (Patent) Damage Undone by Federal Circuit?

Sunstein LLP on

In Kroy IP Holdings v. Groupon, The Federal Circuit issued a decision that should come as a comfort to patent owners, addressing the interplay between decisions of the Patent Trial and Appeal Board (“PTAB”) in inter partes...more

Knobbe Martens

Federal Circuit Review | February 2025

Knobbe Martens on

In HD Silicon Solutions LLC V. Microchip Technology Inc., Appeal No. 23-1397, the Federal Circuit held that  all but one patent claim were invalid as obvious because the claimed material, as properly construed, was disclosed...more

Hudnell Law Group

Differing Burdens of Proof Limits Estoppel Effect of PTAB Final Written Decision

Hudnell Law Group on

On February 10, 2025, the United States Court of Appeals for the Federal Circuit issued a decision in Kroy IP Holdings, LLC v. Groupon, Inc., reversing and remanding a district court ruling that had dismissed Kroy’s patent...more

McDermott Will & Emery

Collateral Estoppel Doesn’t Apply to Unchallenged IPR Claims

McDermott Will & Emery on

The US Court Appeals for the Federal Circuit found that despite a Patent Trial & Appeal Board determination that certain challenged patent claims were unpatentable based on a preponderance of the evidence standard, the patent...more

WilmerHale

Federal Circuit Patent Watch: An Expert Need Not Have Acquired the Requisite Skill Level Prior to the Time of the Invention

WilmerHale on

Precedential and Key Federal Circuit Opinions - WISCONSIN ALUMNI RESEARCH FOUNDATION v. APPLE INC. [OPINION] (2022-1884, 8/28/2024) (Prost, Taranto, and Chen) - Prost, J. The Court affirmed two final judgments of the...more

McDermott Will & Emery

Beware Equitable Doctrine of Issue Preclusion in Multiparty, Multivenue Patent Campaigns

Addressing for the first time whether an invalidity order merges with a voluntary dismissal for purposes of finality, the US Court of Appeals for the Federal Circuit held that an interlocutory order merges with the final...more

Sterne, Kessler, Goldstein & Fox P.L.L.C.

2021 PTAB Year in Review: Analysis & Trends: IPR Estoppels: A Power Imbalance for Plaintiffs and Defendants

Inter partes review (IPR) proceedings raise complex estoppel issues that courts are grappling with and patent litigants must consider. Because patent challengers can assert invalidity in three different tribunals (the...more

Sterne, Kessler, Goldstein & Fox P.L.L.C.

2021 PTAB Year in Review: Analysis & Trends

[co-author: Jamie Dohopolski] Love it or hate it, ignore the USPTO Patent Trial and Appeal Board (PTAB) at your peril. The introduction of the PTAB as part of the America Invents Act over ten years ago has forever changed...more

Sterne, Kessler, Goldstein & Fox P.L.L.C.

[Webinar] Federal Circuit Appeals from the PTAB and ITC: Summaries of Key 2021 Decisions - February 17th, 1:00 pm - 2:00 pm EST

Sterne, Kessler, Goldstein & Fox invites you to a webinar, "Federal Circuit Appeals from the PTAB and ITC: Summaries of Key 2021 Decisions," on Thursday, February 17, 2022. In conjunction with the release of the firm's...more

Mintz - Intellectual Property Viewpoints

Collateral estoppel does not attach to PTAB invalidity determination pending appeal

Recently, in Sanofi-Aventis v. Mylan, 2:17-cv-09105-SRC-CLW, Judge Stanley Chesler of the United States District Court, District of New Jersey, denied a motion by defendant Mylan for summary judgment of invalidity of asserted...more

Bradley Arant Boult Cummings LLP

Federal Circuit Refuses to Resuscitate Prostate Cancer Drug Patent - Intellectual Property News

In a precedential decision delivered this week, the Federal Circuit shot down arguments from Appellants BTG International Limited; Janssen Biotech, Inc.; Janssen Oncology, Inc.; and Janssen Research & Development, LLC (BTG),...more

Mintz - Intellectual Property Viewpoints

Collateral Estoppel Bars Assertion of Patent Claims That Do Not “Materially Alter the Question of Invalidity” Relative to Claims...

On April 4, 2019, Chief Judge Patti Saris of the United States District Court for the District of Massachusetts held in Intellectual Ventures I, LLC v. Lenovo Group Ltd. that a final determination of invalidity in inter...more

Jones Day

Federal Circuit: PTAB Affirmance Estops All Pending Actions Involving Patent

Jones Day on

In XY, LLC v. Trans Ova Genetics, L.C., Nos. 2016-2054, 2016-2136 (Fed. Cir. May 23, 2018), an appeal from the District of Colorado, the Federal Circuit gave preclusive effect to a PTAB finding, something it has done several...more

Knobbe Martens

Federal Circuit Review - April 2018

Knobbe Martens on

Broadest Reasonable Interpretation Encompasses All Embodiments in the Absence of Support Specifically Excluding an Embodiment - In Steuben Foods, Inc. v. Nestle USA, Inc., Appeal No. 2017-1290, the Federal Circuit...more

Foley & Lardner LLP

Collateral Estoppel at the Federal Circuit for Inter Partes Review Proceedings

Foley & Lardner LLP on

In Maxlinear, Inc. v. CF CRESPE, LLC, slip op. 2017-1039, the Federal Circuit remanded to the Patent Trial and Appeal Board (“Board”) an inter partes review (“IPR”) proceeding to evaluate the patentability of certain...more

Schwabe, Williamson & Wyatt PC

2017 Supreme Court and Precedential Patent Cases From the Federal Circuit, With Some Significant Cases from 2016

Arbitration - Waymo v. Uber Technologies, 870 F.3d 1342 (Fed. Cir. 2017) - Waymo sued Uber and others for trade secret misappropriation and patent infringement. Uber contends that Waymo should be compelled to...more

Morrison & Foerster LLP - MoFo@ITC

3D Cinema Systems: ITC Declines to Apply Issue Preclusion Based on PTAB’s IPR Decision

In 3D Cinema Systems (Inv. 939), the Commission issued an opinion that explained why it did not give deference to a decision of invalidity by the Patent Trial and Appeal Board (PTAB) in an inter partes review (IPR)....more

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