UPDATE 1-U.S. appeals court again invalidates Teva's MS drug patent
June 18, 2015 at 12:26 PM EDT
NEW YORK, June 18 (Reuters) - A U.S. appeals court on Thursday once again invalidated a patent held by Teva Pharmaceutical Industries Ltd on its top-selling multiple sclerosis drug Copaxone, clearing the way for the launch of a cheaper, generic version.