Apple has applied to add the Galaxy S4 to a U.S. lawsuit that was filed in February 2012 against Samsung Electronics, claiming that the S4 infringes on 5 Apple patents.
According to a court filing
by Apple to the U.S. District Court, Northern District of California, San Jose Division, immediately after Samsung released the Glaxy S4 smartphone, Apple obtained a device and began its infringement analysis, including Samsungs customizations of the Android Jelly Bean platform, "covering the eight asserted patents."
Apple added 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," Apple added.
Apple claims that the S4 allegedly infringes on two patents related to user interfaces, two Siri related search patents, and a data synchronization patent, according to 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 also accused Samsung of trying to make the review process of the S4's 1.9TB source code more compliacted, by making constant changes to that code.
"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.
"These servers provided Apple not only the source code for released versions of its source code, but also a window into its ongoing development process, thereby complicating the review process. Comingled with the source code actually used on the accused devices, there appeared constantly-changing versions of unreleased source code and works-in-progress," Apple added.
Apple then asked Samsung to correlate its source code with the "accused products."
Apple also had to review source code obtained from Google, which also did not make its source code available immediately.
Apple argues that these delays related to the source codes force the company to also delay the addition of the new infringement claims to the original suit against Samsung.