Plaintiff filed a declaratory judgment action of non-infringement after it received a letter from IP Navigation Group (“IP Nav”). The letter invited the plaintiff to engage in a licensing discussion regarding the patent or patent of IP Nav’s client, which remained anonymous. After filing the declaratory judgment, the plaintiff sought and was granted permission by the district court to serve a subpoena on IP asking IP Nav to identify the anonymous patent holder along with the patent numbers for the patents referenced in the letter.
IP Nav then filed a motion to quash the subpoena in the United States District Court for the Eastern District of Texas, arguing that the subpoena was invalid for lack of subject matter jurisdiction. The district court in Texas issued an order finding that IP Nav had raised “substantial questions” regarding the district court’s jurisdiction but determined it was appropriate for the district court in Wisconsin where the action was pending to determine that issue.
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