Mealey's (November 27, 2017, 4:18 PM EST) -- WASHINGTON, D.C. — Once the Patent Trial and Appeal Board agrees to institute inter partes review (IPR), it must address in its final written decision all claims challenged in the underlying petition, an attorney for software developer SAS Institute Inc. told the U.S. Supreme Court Nov.27 during oral arguments (SAS Institute Inc. v. Joseph Matal, et al., No. 16-969, U.S. Sup.)....