As I write this late Saturday night, it is now Sunday in Japan.
According to the Unisys web site's “LZW Patent and
Software Information” page, “The U.S. LZW patent expired on
June 20, 2003, the counterpart Canadian patent expires July 7, 2004,
the counterpart patents in the United Kingdom, France, Germany and
Italy expire June 18, 2004, and the Japanese counterpart patents
expire June 20, 2004.” It's over.
And I have to wonder if Unisys ever made a profit on this patent, given
the way they handled it.
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