Back in 2009 Microsoft sued TomTom[1] over what appear to be US versions of this patent[2][3] (EU version here[4]) and won. There were subsequently efforts to w

Back in 2009 Microsoft sued TomTom[1] over what appear to be US versions of this patent[2][3] (EU version here[4]) and won. There were subsequently efforts to work around this patent in the Linux implementation of FAT[5]. 1: http://arstechnica.com/information-technology/2009/02/microsoft-sues-tomtom-over-fat-patents-in-linux-based-device/ http://arstechnica.com/information-technology/2009/02/micros... 2: http://www.google.com/patents?id=bUohAAAAEBAJ http://www.google.com/patents?id=bUohAAAAEBAJ 3: http://www.google.com/patents?id=cLAkAAAAEBAJ http://www.google.com/patents?id=cLAkAAAAEBAJ 4: http://www.google.com/patents/EP0618540A3 http://www.google.com/patents/EP0618540A3 5: http://arstechnica.com/information-technology/2009/07/vfat-linux-patch-could-circumvent-microsofts-patent-claims/ http://arstechnica.com/information-technology/2009/07/vfat-l...