Does using a GIF image violate the GFDL because of its patent?
Note: the LZW patent owned by Unisys has expired on June 20, 2003 in the United States, and have also been expired in other countries since July 7, 2004. Some of the below may no longer be relevant Like all legal questions, however, there are still issues to be resolved, including other conflicting patents on the LZW algorithm, as well as data compression patents that may more generally apply.