Apple has once again sued its rival Samsung for alleged copying of its designs and features in the South Korean company's newest models of smartphone.
Apple is seeking $2bn (roughly £1.2bn) or $40 per device in damages – this is over five times the amount sought in the previous lawsuit.
Winning the sales war, Samsung is presently the smartphone market leader. Their devices account for one in three sold last year.
Apple is also trying to bring internet giant Google into the lawsuit by calling the engineers who designed the Android operating system, which is used in Samsung phones. The engineers will have to explain how they built the OS independently of Apple.
In the latest lawsuit, the iPhone maker accused Samsung of infringing on five patents on newer devices, including the fast-selling Galaxy smartphones and tablets. Apple claims that Samsung copied its tap-from-search feature that allows someone to call a phone number found online as well as the "slide to unlock" feature.