A US judge has ruled that Samsung’s tablets infringe patents owned by Apple, according to the “BBC” (http://macte.ch/WeGRO). California District Judge Lucy Koh ruled that while patents have been infringed, Apple must now show that its claim on those inventions is valid.

However, she warned that Apple needs to prove the validity of those patents if it is to win an injunction preventing the sale of Samsung’s Galaxy Tab, the article adds. This is the latest development in the legal brouhaha that spans 20 cases in 10 countries.

Apple claims that the Galaxy range “slavishly” copies its massively-selling iPad and iPhone. Samsung says Apple’s claims are invalid due to previously registered patents relating to design elements and functionality.