Apple Inc has filed a new law suit in a federal court in California asking it to ban Samsung Electronics Co Ltd from selling its new Galaxy Nexus smartphones, accusing it of patent violations. 

Apple said that some of the features like ability to unlock phones by sliding an image and to search for information by voice are the ones expected from its products and these have been infringed upon by Samsung.

In April last year also Apple had filed a law suit against Samsung. In the earlier case, Apple alleges that Samsung illegally copied iPhone and iPad design features and the look of its screen icons. That case is still going on, though in December Apple lost a bid for a preliminary bar against Samsung for selling Galaxy phones and tablets. 

Apple acknowledged the setback in the new action and said now it is suing over new products and different patents. 

At present Apple and Samsung are locked in more than 20 legal fights in at least 10 countries. Many perceive this to be a war for global leadership of smartphone and tablet markets.