Apple has added Samsung's latest handset to an american patent lawsuit claiming the company infringes eight of its technologies.
The disputed innovations include a way to synchronise photos, music and video files across devices, and a way to send videos over the internet.
Apple had already filed claims against earlier Samsung devices saying that they had copied iPhones and iPads. Previously there was a legal dispute involving Apple and Google's Motorola unit.
Samsung's legal move is the latest in a long running battle with Apple.
The US firm has claimed that the Galaxy device maker copied the look and iOS system software found on its tablets and mobials.
Although several of Apple's claims have been rejected, it recently won a major victory when a California-based jury ruled Samsung should pay it over $1bn (£620m) in damages. As the companys are rivals in buisness I think that made samsung very angry and not helping them to get along with Apple.
Samsung has had its own courtroom successes, including a ruling last August that Apple had infringed two of its wireless communication patents in South Korea. It resulted in an order for the IPhone maker to pay 40m won ($35,000; £22,000) in damages. so Apple still cam out on top with the damage charges.
The US lawsuit involving the iPhone 5 dates back to April when a complaint about other devices was filed in the Northern District of California by Samsung to go to trial in March 2014. This is quite a while away yet and there will be another IPhone out by then so will they keep on with this endless battle with Apple or will they settle for 2014's law case.