Federal Circuit Ruling Narrows IPR Estoppel, Influences Patent Law Dynamics

The recent ruling by the U.S. Court of Appeals for the Federal Circuit in the case of Ingenico Inc. v. Ioengine LLC has narrowed the scope of inter partes review (IPR) estoppel. This decision is significant as it holds that IPR estoppel does not cover certain invalidity arguments, such as whether an invention was known or used by others, was on sale, or was in public use prior to the patent claim. According to attorneys at Troutman Pepper, while this may lead to an increase in IPR petitions, the U.S. Patent and Trademark Office’s stricter criteria for discretionary denial could serve as a balancing factor in this evolving landscape of patent law.