Samsung Electronics Co Ltd asked a U.S. appeals court on Thursday to toss out an order that it pay Apple Inc $930 million for infringing on iPhone patents to make its Galaxy line of smartphones and tablets. The hearing at the U.S. Court of Appeals for the Federal Circuit was the latest fight between the two smartphone makers, which have been litigating around the world for three years, each accusing the other of infringing patents in making smartphones and other mobile devices.