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Q141. Defendant’s Defense

Q141. Defendant’s Defense
 What can a defendant do if a patentee files a suit for patent infringement?

A141. If a patentee files a suit for patent infringement, a defendant has some options: First, the defendant may counterclaim that the alleged patent is invalid. Alternatively, the defendant may file a trial to invalidate the patent. In some circumstances, the defendant may file a suit for declaratory judgment that the patentee has no right to sue the defendant.