I haven't had the time to read all 13 pages but I'm commenting anyway.
It could take more in lawyers fees for some companys to fight this than it would be worth. If the patent looks iron-clad it might not be worth wasting lawyers fees on. SP might not have been the first, but if they did the legalities right they could be in the drivers seat on this.
Hope not.
If they are?
Long live the ULT!