Patent that cost Microsoft millions gets invalidated

Posted by BernardSwiss on Mar 25, 2016 5:36 PM EDT
Ars Technica; By Joe Mullin 		Mail this story
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One of the oldest and most profitable patent trolls, Uniloc, has been shot down. Its US Patent No. 5,490,216, which claims to own the concept of "product activation" in software, had all claims ruled invalid by the Patent Trademark and Appeals Board (PTAB).

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