Funny how AMD is getting credit around here since they actually sued multiple mobile graphics companies for patent infringement this year: http://www.anandtech.com/show/...
Incidentally, those companies are in absolutely no way trying to make "Radeon knockoff" parts that copy AMD's actual products. Hell, they aren't even competing in the same markets where AMD sells products since AMD ain't selling smartphone chips.
But AMD sued anyway and not a peep from the "OMG patent troll!" crowd.
The difference is that Intel is trying to prevent direct knockoffs of its own products here. Intel isn't running around suing anybody who makes an ARM chip for use with standard ARM software, it's (legitimately) trying to stop direct knockoffs that are basically reimplementing x86 architecture. If you want to whine about how that's "unfair" try making an ARM knockoff chip without paying up and see how far you get.