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Advocacy Group Challenges Microsoft's FAT Patent

Law360 (April 16, 2004, 12:00 AM EDT) -- A public advocacy group has challenged the patent for Microsoft’s computer file format system at the U.S. Patent and Trademark Office.

The New York-based Public Patent Foundation filed a formal request Thursday with the USPTO to revoke Microsoft’s patent on its File Allocation System (FAT).

In its filing, PUBPAT submitted what it called previously unseen prior art showing the patentwas obvious and, as such, should have never been granted. The patent was issued in November 1996 and is not otherwise due to expire until 2013....
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