TWRoO on 04 May 2010
There is no patent for "motion control" there will be patents for specific forms of motion control depending on how they are used, implemented and what tech is used.
I should think all three of the motion control options are unique enough to avoid patent infringment... but that doesn't mean some won't try to sue. Nintendo has probably already been over theirs in detail to see if they can sue Sony, but I doubt that will happen (some smaller companies will probably try it on though)
