(March 3, 2017, 7:23 AM EST) -- WASHINGTON, D.C. — The Patent Trial and Appeal Board erred not only while construing a disputed phrase in a patented polymerization process but also in holding that the patent challenger failed to establish obviousness, an appellant recently argued to the Federal Circuit U.S. Court of Appeals (SNF Holding Company v. BASF Corporation, No. 16-2565, Fed. Cir.)....