Estoppel Doctrine in China's Patent System
In a precedential opinion entered on May 7, 2025, the United States Court of Appeals for the Federal Circuit affirmed a jury verdict invalidating claims of two patents for anticipation and obviousness over the prior art....more
2023 was a busy year at the Patent Trial and Appeal Board, as post-grant practice continued to evolve at a rapid pace. At the United States Patent and Trademark Office, there were big developments in Director Review and...more
If the scope of the IPR estoppel statute has been keeping you up at night, our latest case of the (recent) week might help you sleep a little better because it provides clarity on two aspects of the statute’s reach. ...more
Precedential Federal Circuit Opinions - In Re MCDONALD [OPINION] (2021-1697, 8/10/2022) (Newman, Stoll, and Cunningham) - Cunningham, J. The Court affirmed a PTAB decision rejecting reissue claims under 35 U.S.C. §...more
Earlier this month, in the precedential decision Uniloc 2017 LLC v. Facebook Inc., the Court of Appeals for the Federal Circuit (“the CAFC”) upheld the Patent Trial and Appeal Board (“the Board”) on the issue of estoppel (or...more
In 2018, the U.S. Court of Appeals for the Federal Circuit docketed close to 600 appeals from the U.S. Patent and Trademark Office (USPTO). That is the second highest number since starting to hear post-American Invents Act...more
Post-Grant Review Proceeding Filings Ramp Up In addition to inter partes review (IPR) and covered business method (CBM) review proceedings, the America Invents Act (AIA) provides for post-grant review (PGR) proceedings. PGR...more