"I'll restrict myself for now to two quick words: Think Bilski. Are Microsoft's FAT patents *hardware* patents? No? Then what makes you assume they are valid in the post-Bilski world? Don't even get me started on obviousness. Let alone who really "invented" that stuff. This may turn out to be an opportunity, frankly. If you read the ITC complaint, on page 23, by the way, you'll find that Microsoft is currently dealing with a nullity action in Germany regarding a foreign counterpart to the US FAT patents. It's also dealing with a Canadian challenge."