Estoppel Doctrine in China's Patent System
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
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
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
The Patent Trial and Appeal Board has denied a patent owner’s motion to terminate an inter partes review proceeding finding that the unidirectional nature of estoppel under 35 U.S.C. § 315(e) renders common-law claim...more
There is no doubt that “the potential for estoppel is one of the important considerations for defendants in deciding whether or not to file an [inter partes review (“IPR”)] petition.” Shaw Indus. Grp., Inc. v. Automated Creel...more