Understanding the Impact of IPR Estoppel and PTAB Discretionary Denials — Patents: Post-Grant Podcast
Estoppel Doctrine in China's Patent System
In IOENGINE, LLC v. Ingenico Inc. (Fed. Cir. 2025), the Federal Circuit narrowed the scope of IPR estoppel under 35 U.S.C. § 315(e)(2), which precludes an IPR petitioner from asserting in court that a patent claim “is invalid...more
On May 7, 2025, the U.S. Court of Appeals for the Federal Circuit (“CAFC”) affirmed a decision by the U.S. District Court for the District of Delaware (“district court”) that found claims of two IOENGINE, LLC (“IOENGINE”)...more
In Intendis GmbH v. Glenmark Pharmaceuticals Inc., USA, the Federal Circuit affirmed the district court decision that found infringement under the doctrine of equivalents. This case shows that the doctrine of equivalents...more
Under 35 U.S.C. 315(e)(1), a petitioner in an inter partes review of a claim in a patent that has resulted in a final written decision by the Board may not request or maintain a proceeding before the Patent Office with...more