News & Analysis as of

Appeals Patent Invalidity Litigation Strategies

K&L Gates LLP

Estoppel Estopped?

K&L Gates LLP on

The Federal Circuit recently resolved a split among the district courts whether patent infringement defendants who bring inter partes review (IPR) challenges are estopped from raising new prior art challenges in a co-pending...more

Jones Day

Trial Date Drives PTAB’s Denial of IPR Institution

Jones Day on

On April 16, 2025, the Patent Trial and Appeal Board (PTAB) denied institution of inter partes review (IPR) for several claims of U.S. Patent No. 7,187,307, owned by Universal Connectivity Technologies, Inc. HP Inc., Dell...more

Sheppard Mullin Richter & Hampton LLP

A Line in the Sand: Federal Circuit Bounds IPR Estoppel in Ingenico v. IOENGINE

In a significant development for patent litigants, the Federal Circuit in Ingenico Inc. v. IOENGINE, LLC, affirmed an important limitation on the scope of IPR estoppel under 35 U.S.C. § 315(e)(2). Specifically, the court held...more

Proskauer - The Patent Playbook

Ingenico Inc. v. IOENGINE, LLC: Federal Circuit Resolves the IPR Estoppel Split

In what is certain to become a landmark decision, the Federal Circuit has resolved a long-standing question that divided patent litigators and judges alike: does IPR estoppel apply to physical systems (“system art”) described...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

A&O Shearman

UPC revocation actions: What is a reasonable number of auxiliary requests?

A&O Shearman on

Two recent UPC decisions have provided some guidance on the admissibility and reasonableness of auxiliary requests in revocation actions. The court will look at the specific circumstances and complexity of the revocation...more

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

PTAB Strategies and Insights - July 2020: Federal Circuit Confirms PTAB's Ability to Consider Subject Matter Eligibility of...

On July 22, 2020, the U.S. Court of Appeals for the Federal Circuit (Federal Circuit) issued an opinion in Uniloc 2017 LLC v. Hulu, LLC & Netflix, Inc., No. 2019-1686 (Fed. Cir. 2020) authorizing the U.S. Patent Trial &...more

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

PTAB Strategies and Insights - February 2019

The PTAB Strategies and Insights newsletter provides timely updates and insights into how best to handle proceedings at the USPTO. It is designed to increase return on investment for all stakeholders looking at the entire...more

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