WASHINGTON — The U.S. Supreme Court seems divided as it mulls a high-stakes patent dispute between rival pharmaceutical companies over the world’s best-selling multiple sclerosis treatment.
Justices heard arguments Wednesday in a case that threatens to cut into the profits of Israel-based Teva Pharmaceutical Industries Ltd., which sells $4 billion annually of the drug Copaxone.
Teva claims the U.S. Court of Appeals for the Federal Circuit wrongly overturned five of its patents for the drug.
That 2013 …