Samsung ups stakes by seeking ban on Apple iPhone 4S in Australia and Japan

Samsung has stepped up its tit-for-tat court battle against Apple, its newest archrival and biggest client, saying on Monday that it has filed for sales bans on the American company's new iPhone 4S in Australia and Japan.

The move came after Samsung filed preliminary injunction motions against the latest iPhone in France and Italy less than a day after the device was unveiled, claiming the product infringed its patents on certain mobile communications (in Australia) and interface (in Japan) technologies.  Full Read