Mealey's (April 24, 2018, 12:21 PM EDT) -- WASHINGTON, D.C. — Upon institution of inter partes review (IPR), the Patent Trial and Appeal Board must decide the validity of all patent claims challenged in the underlying petition, a divided U.S. Supreme Court ruled April 24 (SAS Institute Inc. v. Andrei Iancu, Director, U.S. Patent and Trademark Office, No. 16-969, U.S. Sup.)....