Samsung added infringement claims about the iPhone 5 to the existing patent lawsuit against Apple at the US District Court of California. The original complaint was filed April 18, alleging earlier iPhone models infringed the same eight patents, Samsung said in an e-mailed statement.

In a separate patent lawsuit at the same court, the US federal court jury found Aug 24 that Samsung infringed on six of Apple's patents, ordering the Galaxy phone maker to pay $1.05 billion in damages to the iPhone maker, reported Xinhua.