PUBPAT Challenges Microsoft's FAT Patent

An anonymous reader writes "The Public Patent Foundation filed a formal request with the United States Patent and Trademark Office today to revoke Microsoft Corporation's patent on the FAT File System, touted by Microsoft as being 'the ubiquitous format used for interchange of media between computers, and, since the advent of inexpensive, removable flash memory, also between digital devices.' In its filing, PUBPAT submitted previously unseen prior art showing the patent, which issued in November 1996 and is not otherwise due to expire until 2013, was obvious and, as such, should have never been granted."