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Inter Partes Review (IPR) Proceeding Patent Litigation Collateral Estoppel

Jenner & Block

Inter Partes Review Invalidity Finding Does Not Collaterally Estopell Assertion of Unchallenged Claims in Same Patent

Jenner & Block on

In a February 10, 2025 order, the Federal Circuit Court of Appeals rejected the application of the collateral estoppel doctrine to patent claims asserted in a district court infringement action where other claims in the same...more

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

Vorys, Sater, Seymour and Pease LLP

The Precedent: The Federal Circuit Clarifies When Collateral Estoppel Applies Following Inter Partes Review Proceedings in Kroy IP...

In this edition of The Precedent, we outline the Federal Circuit's decision in Kroy IP Holdings, LLC v. Groupon, Inc. Overview - The Federal Circuit held that the Patent Trial and Appeal Board’s (PTAB) finding of...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

Fitch, Even, Tabin & Flannery LLP

Federal Circuit Clarifies Patent Claim Assertion After PTAB Unpatentability Decisions

On February 10, the Federal Circuit held in Kroy IP Holdings, LLC v. Groupon, Inc. that a final written decision of the Patent Trial and Appeal Board (PTAB) concluding that certain claims are unpatentable does not prevent the...more

Wilson Sonsini Goodrich & Rosati

The PTAB Review - October 2024

The PTAB Review begins by exploring collateral estoppel from unpatentability determinations in inter partes review (IPR) proceedings. Next, it summarizes recent developments at the U.S. Patent and Trademark Office relevant to...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

Fenwick & West LLP

En banc Hearing Petition Filed on Recent Fed. Circ. Collateral Estoppel Decision

Fenwick & West LLP on

The Court of Appeals for the Federal Circuit has sparked debate following a recent ruling on the Patent Trial and Appeal Board's (PTAB) application of estoppel provisions in invalidating amended claims in inter partes...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

Morgan Lewis

Federal Circuit Clarifies Scope and Timing of Collateral Estoppel for Claims Under IPR

Morgan Lewis on

In a recent opinion, the Federal Circuit added several new wrinkles to amendment practice in inter partes review proceedings. The court affirmed the Patent Trial and Appeal Board’s determination that most of the original...more

McDermott Will & Emery

See Here: No Standing Based on Vague Future Plans or Adverse Priority Findings

McDermott Will & Emery on

The US Court of Appeals for the Federal Circuit dismissed an appeal from a final written decision in an inter partes review (IPR) proceeding, finding that the petitioner lacked standing because it suffered no injury in fact....more

Akin Gump Strauss Hauer & Feld LLP

Collateral Estoppel Causes PTAB to Reverse Course and Institute IPR

The Patent Trial and Appeal Board granted a request for rehearing and instituted inter partes review of a web browsing patent in order to reconcile an inconsistency with a final judgment of un-patentability in the IPR of a...more

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

PTAB Strategies and Insights Newsletter - May 2023: Beware of Collateral Estoppel at the PTAB

When thinking about estoppel and the PTAB, the § 315(e) estoppels—relating to grounds a petitioner raised or reasonably could have raised—are likely the first to come to mind. However, other types of estoppel, such as...more

Haug Partners LLP

Google v. Hammond: IPR and Collateral Estoppel

Haug Partners LLP on

On December 8 2022, the Federal Circuit in Google LLC v. Hammond Development Int’l, Inc. affirmed in part and reversed in part the PTAB’s final written decision of an IPR holding that Google failed to prove that certain...more

WilmerHale

Collateral estoppel in IPR proceedings requires that the issues of patentability be identical, not that the patent claims need to...

WilmerHale on

Precedential Federal Circuit Opinions - 1.  GOOGLE LLC v. HAMMOND DEVELOPMENT INTERNATIONAL, INC. [OPINION]  (21-2218, 12/8/2022) (Moore, Chen, and Stoll) - Moore, Chief J. Reversing in part and affirming in part...more

McDermott Will & Emery

Applying Collateral Estoppel in IPRs

McDermott Will & Emery on

The US Court of Appeals for the Federal Circuit considered whether a dependent claim invalidated by collateral estoppel also invalidates its parental independent claim. Google LLC v. Hammond Devel. Int’l, Inc., Case No....more

Knobbe Martens

Collateral Estoppel Is Applicable in IPRs When the Question of Patentability Is the Same

Knobbe Martens on

GOOGLE LLC v. HAMMOND DEVELOPMENT INTERNATIONAL, INC. - Before Moore, Chen, and Stoll. Appeal from the Patent Trial and Appeal Board. - Summary: Collateral estoppel applies to IPRs where differences in claims do not...more

Schwabe, Williamson & Wyatt PC

Latest Federal Court Cases - December 2022 #2

Google LLC v. Hammond Development International, Inc., Appeal No. 2021-2218 (Fed. Cir. Dec. 8, 2022) - In the only precedential patent decision this week, the Federal Circuit issued a decision concerning the effect of...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.

Federal Circuit Appeals from the PTAB and ITC: Summaries of Key 2021 Decisions: SynQor, Inc. v. Vicor Corp., 988 F.3d 1341 (Fed....

SynQor, Inc. appealed the inter partes reexamination decision of the Patent Trial and Appeal Board (Board) holding un- patentable as obvious original claims 1–19, 28, and 31 of SynQor’s patent, U.S. Patent No. 7,072,190 as...more

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