Apple and samsung - A love hate war

Apple and Samsung is embroiled in one of the unique love hate war in the technological arena.
Apple files lawsuits against samsung in April that they copy the ipads and iphones, only to be retaliated by samsung which files five patent infringements cases against Apple. Now both have filed that the rivals products be banned from importing because of patent allegations. This happens despite their intimacy in business like this report
"Apple is Samsung's second-largest client in 2010 after Japan's Sony, accounting for four percent of the South Korean firm's 155 trillion won ($142 billion) annual revenue."