Apple's the star in the latest chapter of Immersion's court drama. The California haptic feedback developer known for going to court to guard its technologies has filed a lawsuit against Apple and AT&T. It says the haptic feedback systems of the Apple iPhone 6/6Plus, iPhone 6/6s Plus and Watch/Watch Sport/Watch Edition infringe upon two of its patents. Those are no. 8,619,051, which is named "Haptic Feedback System with Stored Effects," and "Method and Apparatus for Providing Tactile Sensations" that's filed under no. 8,773,356. The iPhone 6s and 6s Plus allegedly infringe upon a third patent, as well: no. 8,659,571 named "Interactivity Model for Shared Feedback on Mobile Devices."