Federal Circuit rules that prosecution laches requires evidence of prejudice By Jonathan Allred – Edited by Elizabeth Akerman Cancer Research Technology Ltd. v. Barr Laboratories, Inc., No. 2010-1204 (Fed. Cir. Nov. 9, 2010) Slip Opinion The Federal Circuit overturned the District Court of Delaware, which had ruled that the plaintiff’s patent was unenforceable for prosecution laches, and, in the alternative, invalid for inequitable conduct. Prosecution laches is an equitable defense to infringement when the plaintiff has delayed the prosecution of ...
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