On Tuesday, Apple and Samsung each drew up a list of infringed patents and devices ahead of the pair’s second two-way California patent trial starting March 31. The narrowed lists of patents were presented to Judge Lucy Koh, following her decision in April last year that both companies would have to limit their infringement claims.

The news comes from FOSS Patents, which explains in a recent article: “The parties are allowed take five patent claims each to trial. After the September narrowing, they both would have been free to choose one claim per patent, i.e., to maximize the number of different patents-in-suit, which would have been the logical choice for both.”

FOSS Patents continues:

After summary judgment, only Apple was still able to do so. Samsung, however, had only four patents left. The logical choice for it was (and that’s the one it made indeed) to take all four different patents to trial, but with the luxury to assert a second claim of one of the four patents (typically not nearly as useful as a whole additional patent, but better than nothing).

In the forthcoming trial, Apple is accusing Samsung’s Admire, Galaxy Nexus, Galaxy Note, Galaxy Note II, Galaxy S II, Galaxy S II Epic Touch 4G, Galaxy S II Skyrocket, Galaxy S III, Galaxy Tab 2 10.1, and Stratosphere, and the specific patents highlighted by the Cupertino, Calif. company are:

  1. U.S. Patent No. 5,946,647: claim 9 (“data tapping” patent)
  2. U.S. Patent No. 6,847,959: claim 25 (Siri-style unified-search patent)
  3. U.S. Patent No. 7,761,414: claim 20 (asynchronous data synchronization)
  4. U.S. Patent No. 8,046,721: claim 8 (slide-to-unlock image)
  5. U.S. Patent No. 8,074,172: claim 18 (auto-complete)

Samsung, on the other hand, is accusing Apple’s iPhone 4, iPhone 4s, iPhone 5, iPad 2, iPad 3, iPad 4, iPad mini, iPod touch (fourth-generation), iPod touch (fifth-generation), and MacBook Pro of infringing on its patents, and the South Korean company’s asserted patents and patent claims include:

  1. U.S. Patent No. 7,756,087: claim 10 (non-scheduled transmission over enhanced uplink data channel; declaration of standard-essentiality to ETSI in May 2006)
  2. U.S. Patent No. 7,551,596: claim 13 (signaling control information of uplink packet data service; declaration of standard-essentiality to ETSI in May 2010)
  3. U.S. Patent No. 6,226,449: claim 27 (recording and reproducing digital image and speech)
  4. U.S. Patent No. 5,579,239: claims 1 and 15 (remote video transmission system)

FOSS Patents adds that while both Apple and Samsung tried to accuse one another’s “latest and greatest products,” the slow nature of patent litigation means this year’s trial will discuss smartphones, tablets, and computers released in 2012 and before.

Apple v. Samsung.

As mentioned, the second “Apple v. Samsung” two-way patent trial is set to begin on March 31. We’ll keep you updated with further information as we receive it.

In the meantime, see: Dungeon Keeper Updated With The Power Of Friendship And Other Enhancements, Look Who’s Talking: Siri To Get More ‘Natural Sounding’ Voices In iOS 7.1, and Gameloft To Soon Deploy Official Game Of ‘Captain America: The Winter Soldier’.