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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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
[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
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