patent war since 2010 as it seeks to limit growth of Google's Android system. The fight has embroiled Samsung, HTC and others who use Android.
Google's Android software, which Apple's late founder Steve Jobs denounced as a stolen product, has become the world's No. 1 smartphone operating system.
Samsung is the world's largest smartphone maker, while Apple is in third place. Many experts consider Samsung's Galaxy touchscreen tablets the main rival to the iPad, although they are currently a distant second to Apple's devices.
Samsung is also a parts supplier to Apple, producing micro processors, flat screens and memory chips - both dynamic random access memory (DRAM) chips and NAND memory chips - for the iPhone, iPad and iPod. Apple has reduced orders from Samsung for chips and screens.