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USPTO Grants Order Challenging Patent on Operating System for File Names

From the Public Patent Foundation press release:

  • “The United States Patent and Trademark Office has issued an Order granting the Public Patent Foundation’s Request for Reexamination of Microsoft’s patent on the FAT file system, which Microsoft concedes is “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 Order, the Patent Office found that PUBPAT’s request raised “a substantial new question of patentability” regarding every claim of the patent.”
  • For reference, see Patent Number 5,579,517 and from Microsoft’s site, FAT File System Technology and Patent License, December 3, 2003.
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