Microsoft is suing TomTom in part because the guys from Redmond claim that TomTom's use of Linux in its navigation devices has violated three of its file-system related patents. One reason why Microsoft feels it can do this is that it already has patent cross-licensing agreements covering these patents with other Linux-using companies.
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akf
15 years 6 weeks 3 days 46 min ago
in other words
In other words: Microsoft gets already paid for Linux...