Mealey's (December 17, 2015, 11:45 AM EST) -- WASHINGTON, D.C. — In a Dec. 15 ruling, a Federal Circuit U.S. Court of Appeals panel affirmed a ruling by the Patent Trial and Appeal Board (PTAB) of the U.S. Patent and Trademark Office (PTO) that two digital audio and video sales method patents are obvious in light of prior art, rejecting the patent holder’s infringement claims against Apple Inc. (SightSound Technologies LLC v. Apple Inc., No. 15-1159 and 15-1160, Fed. Cir.; 2015 U.S. App. LEXIS 21655)....