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Litigation Strategies Prior Art Appeals

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

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

FanDuel Learns the Hard Way: An IPR Challenge to Any Patent Claim May be Lost if Not Comprehensive and Rigorous Enough

Sunstein LLP on

As we demonstrated in our own successful appeal, Arendi S.A.R.L. v. Apple Inc. (Fed. Cir. 2016), a petition for inter partes review (“IPR”) may fail when an expert declaration lacks detailed explanation. An expert’s...more

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

Patent Prosecution Tool Kit: The Changing Face of Non-Obviousness

It is difficult to think of a case that has had more influence on patent practice than KSR v. Teleflex (550 U.S. 398 (2007)). In KSR, the U.S. Supreme Court rejected the established practice that an invention could not be...more

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

PTAB Strategies and Insights - November 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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