CAFC Weighs in Again on IPR Joinder Estoppel, Affirms PTAB Holding that Uniloc Patent Claims are Obvious

The U.S. Court of Appeals for the Federal Circuit (CAFC) ruled yesterday in Uniloc v. Facebook, Inc., WhatsApp, Inc. that the “no appeal” provision of 35 U.S.C. § 314 does not preclude the court from reviewing a Patent Trial and Appeal Board (PTAB) finding that a petitioner is not estopped from maintaining an IPR proceeding under the IPR estoppel provision of 35 U.S.C. § 315(e)(1). However, the court noted that its decision was based on the particular facts of this case, where “the alleged…Read More