andydread writes: We discussed the accusation against Microsoft by Barnes and Noble about their patent attacks on Android. The details are out on the extent that Microsoft has gone to make open source undesirable in the marketplace. Barnes and Noble says that this is not just about Android. According to B&N Its about all open source in general and they have filed a detailed complaint (PDF) with the ITC spelling out what they call "extortive practices" on the part of Microsoft against open source. Now we have a list of the actual patents in question and B&N explaining how each one of these patents are invalid.