Samsung's Galaxy S4 infringes on 5 Apple patents, according to a court filing by Apple.
Apple wants to add the new Galaxy S4 to an ongoing case involving Apple and Samsung being heard in the U.S. District Court, Northern District of California, San Jose Division, according to a filing with that court on Tuesday.
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Samsung's newest flagship smartphone was launched in March and went on sale in the U.S. in late April.
"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.
Apples infringement analysis focuses on Google functionality that Samsung incorporates into its devices, Apple said in the filing. The two Siri-related patents are infringed by the Google Now search application on the Galaxy S4, according to Apple.
To determine if Samsung and Google infringe on Apple's patents, the company has been reviewing confidential source code made available for inspection by the two companies since June 2012, according to the filing.
"Apple encountered a number of problems with the review," it said. Initially, Samsung made the source code available for inspection on computers connected to a live copy of Samsung's development servers in Korea, Apple said.