Mealey's (January 4, 2017, 11:18 AM EST) -- WASHINGTON, D.C. — Finding no error in a ruling by the Patent Trial and Appeal Board that invalidated, on obviousness grounds, 22 claims of a patented method of maintaining drugs delivered via a drug-eluting stent, a divided Federal Circuit U.S. Court of Appeals on Jan. 3 affirmed (In re: Ethicon Inc., No. 15-1696, Fed. Cir.; 2017 U.S. App. LEXIS 4)....