Ericsson, a pioneer in mobile phones that transformed itself into the world's largest maker of wireless networks, said Friday it's filing seven new lawsuits in a U.S. court and is asking the U.S. International Trade Commission to block Apple products from the U.S. market. Together, the complaints accuse Apple of infringing as many as 41 patents for some of the fundamental ways mobile devices communicate and for related technology such as user interfaces, battery saving and the operating system.