Covenants Not to Sue Trigger Patent Exhaustion

by Bryan Hart on July 10th, 2019
The interaction of the patent exhaustion doctrine and covenants not to sue was highlighted in a recent opinion from the District of Delaware in Purdue v. Collegium. The court denied Collegium’s motion to dismiss, which was premi… Read More

With License Ambiguous, Patent Exhaustion Heads to Jury

by Bryan Hart on August 30th, 2017
In Audio MPEG, Inc. v. Dell Inc., the Eastern District of Virginia denied summary judgment of patent exhaustion because it was ambiguous whether a license between Audio MPEG and Dell’s supplier Microsoft covered the allegedly in… Read More

Pleading Implied License as an Affirmative Defense to Patent Infringement

by Charles Bieneman on July 17th, 2013
An implied license is an affirmative defense to patent infringement. Because the defense is, by definition, highly fact-specific, it is not always clear what allegations are required to adequately plead the implied license defense… Read More

Patent Exhaustion Based on Foreign Sales

by Charles Bieneman on December 2nd, 2012
Sales outside the United States exhausted a patent owner’s rights in its U.S. patent, according to Multimedia Patent Trust v. Apple, Inc., No. 10-CV-2618-H (KSC), 2012 U.S. Dist. LEXIS 167479 (S.D. Cal. Nov. 9, 2012). There… Read More

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