Apple already had a lawsuit filed in February of 2012 with Samsung and now wants to add to it. 

Apple is saying that the Samsung Galaxy S4 infringes on 5 Apple patents. 

The 5 infringements are regarding two patents related to user interfaces, two Siri related search patents and a data synchronization patent, as according to the court filing. 

Apple is looking to add these to the ongoing case involving Apple and Samsung being heard in the U.S. District Court, Northern District of California and San Jose Division according to a filing that was made with the court on Tuesday. 

"Apple obtained the Galaxy S4 on April 27 and immediately began its infringement analysis, including Samsungs customizations of the Android Jelly Bean platform, covering the eight asserted patents," Apple stated in the filing, adding that it tested S4's sold by AT&T, T-Mobile, and Sprint. "That analysis revealed that the Galaxy S4 infringes five of Apples asserted patents in the same ways as Samsungs already accused products," it added.

Apple is having their infringement analysis focus on Google's functionality that Samsung uses and incorporates into its devices.  

The file claims that "Apple encountered a number of problems with the review".  

Apple has said that Samsung has made the source code available for inspection on computers that are connected to a live copy of their development servers in Korea.