This isn't the first patent violation case in the games industry and surely won't be the last. The aim of the company claim is to seek damages and maybe even stop the companies using this technology in future.
"A case in Texas district court, started by Anascape, Ltd., concerns no less than eleven alleged patent violations which have supposedly been made by both Nintendo and Xbox-maker Microsoft with their current controllers. Among the patents listed in the suit are "Game Controller With Analog Pressure Sensor" and "3D Controller With Vibration."
Sony haven't been caught in this particular patent issue, but still face problems regarding controller force feedback technology from Immersion.
Who's to thank for all this? The American patent system, which was designed to protect innovators but usually just ends up ruining things for everything, well done.