On June 16, 2020, a judge in the U.S. Court of Appeals for the Federal Circuit (CAFC) affirmed a U.S. Patent Trial and Appeal Board’s (PTAB) decision in the matter of PalTalk Holdings, Inc. v. Riot Games, Inc., in which the PTAB found two PalTalk patents invalid as being obvious over prior art references.
The patents in dispute relate to an in-game messaging system between video game players, which PalTalk alleged Riot Games had infringed upon in League of Legends and Valve had infringed upon in Defense of the Ancients 2 (Dota 2).
