"Yesterday, Microsoft attacked free software and GNU/Linux users with software patent claims against the Tom Tom Navigator and its implementation of the FAT file system. But do they have a sword or a wet rag? There have been interesting patent rejections coming from the USPTO's Board of Patent Appeals and Interferences (BPAI) since the Bilski ruling was handed down by an en banc hearing of the Court of Appeals for the Federal Circuit (CAFC). One is the rejection of one of IBM's database query patents. It was rejected because the innovation isn't "tied to a particular machine". So it's a happy coincidence that MS claims their technology is running on all sorts of devices. Foot, meet mouth."