Microsoft licenses FAT
http://www.eweek.com/article2/0,4149,1402353,00.asp
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FAT has become a standard file system for all kinds of devices. And so, Microsoft has decided that it's time to start getting these companies to pay up in the form of licensing.
Good or bad? Hard to say. FAT belongs to Microsoft and they should have control over who uses it. On the other hand, would FAT have become a standard if there had been licensing fees for all those years?