Samsung has officially filed court papers accusing Apple’s iPhone 5 of infringing its patents, a move that was largely expected and is the latest episode in the global patents war being waged worldwide between the two smartphone rivals.

The South Korean vendor – the world’s largest handset supplier – added the claims to an existing patent-infringement lawsuit between the two companies in federal court in San Jose, California. It alleges that, following investigation of the product upon its release last month, the new device infringes two standards patents and six features patents. Earlier reports suggested that Samsung could target the new iPhone’s LTE functionality – an area where Samsung is thought to hold powerful patents.

The case in which Samsung added the iPhone 5 claims is scheduled for trial in 2014.

The ongoing spat between the two companies has so far seen Apple come out on top – the Californian vendor won a US$1.05 billion jury verdict against Samsung on August 24 in a separate patent case in the same San Jose court. In more positive news for Samsung, the court yesterday lifted a sales ban on Samsung’s Galaxy Tab 10.1 tablet device, against which Apple won a preliminary injunction in June.