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Patents Patent Invalidity Collateral Estoppel

Jones Day

Federal Circuit Reverses District Court’s Application Of Collateral Estoppel

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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

Knobbe Martens

Federal Circuit Review | February 2025

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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

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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

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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: Federal Circuit Orders Remanded Case Reassigned to New Judge, Finding That Trial Judge’s Statements...

WilmerHale on

Precedential and Key Federal Circuit Opinions - HD SILICON SOLUTIONS LLC v. MICROCHIP TECHNOLOGY INC. [OPINION] (2023-1397, 2/6/2025) (Lourie, Stoll, Cunningham) - Lourie, J. The Board affirmed the Final Written...more

WilmerHale

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

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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

Schwabe, Williamson & Wyatt PC

Latest Federal Court Cases - October 2023 #2

Finjan LLC v. SonicWall, Inc., Appeal No. 2022-1048 (Fed. Cir. Oct. 13, 2023) In the Federal Circuit’s only precedential opinion this week, a majority affirmed summary judgment of non-infringement on appellant Finjan’s...more

Haug Partners LLP

Can Different Theories of Patent Invalidity Be Deemed Different Issues for Collateral Estoppel Purposes?

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The doctrine of issue preclusion, or collateral estoppel, prevents a party who unsuccessfully litigated an issue to a final decision in one proceeding from relitigating the same issue in future proceedings. In the patent...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

Jones Day

PO Collaterally Estopped From Asserting Related Patents

Jones Day on

A recent case in the Northern District of Illinois addressed the issue of collateral estoppel in connection with patents that were similar to those previously cancelled by the PTAB: In Think Prods., Inc. v. Acco Brands...more

Holland & Knight LLP

SDNY: Collateral Estoppel Halts Social Media Patent Case

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In late 2018, Plaintiff NetSoc sued Chegg in the U.S. District Court for the Southern District of New York (SDNY), alleging infringement of a patent directed to "establishing and using a social network to facilitate people in...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

Schwabe, Williamson & Wyatt PC

Latest Federal Court Cases - December 2018 #3

PATENT CASE OF THE WEEK - VirnetX Inc. v. Apple, Inc., Appeal Nos. 2017-2490, -2494 (Fed. Cir. Dec. 10, 2018) The Federal Circuit affirmed two final written decisions of the Patent Trial and Appeal Board (“PTAB”), which...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

XY, LLC v. Trans Ova Genetics, L.C.

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Federal Circuit Summaries - Before Newman, Dyk, and Chen. Appeal from the District of Colorado. Summary: (1) The Federal Circuit’s separate affirmance of a PTAB decision that a patent in suit is invalid renders an...more

Knobbe Martens

Federal Circuit Review - April 2018

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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

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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

Morris James LLP

Magistrate Recommends Judgment In Favor Of Defendants Based On Collateral Estoppel

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Burke, M. J. Report and recommendation regarding summary judgment that the defendants’ noninfringement motion be granted in part and denied as moot in part; defendants’ invalidity motion be granted; and plaintiffs’ validity...more

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