Samsung Electronics Co. filed suits against Apple Inc. in Japan and Australia to stop sales of iPhone 4S, adding to similar complaints in France and Italy.
Injunctions against the sale of iPad2 and the previous generation iPhone 4 in Japan were also sought, the Suwon, South Korea-based company, said in a statement Monday. Samsung cited one telecommunications and three user-interface patents in the Japan case, and three covering wireless communications technologies for the Australia suit.
Monday's filing escalates the legal battle between the world's two biggest makers of smartphones and tablet computers.