What bogus claim? When the SCO suit started you were howling that "even the FSF admitted that Linux infringed on patents." You've been harping on that point ever since.
No one has ever substantiated it because it's never been proven true. Now you're claiming it all over again--again without any proof. Ballmer's pulling a McBride by throwing a vague reference to Linux infringing on some IP that is never referenced. Think this claim has any more credibility than SCO's? I don't.
That's pretty funny, considering the SCO lawsuit started in early 2003, and the patent study wasn't even released till end of summer 2004. Your claims are obviously bogus, as usual.