C5 Med. Werks, LLC v. CeramTec GMBH, 937 F.3d 1319 (10th Cir. Sept. 11, 2019)
In this trademark dispute, the Tenth Circuit reversed the denial of a motion to dismiss for lack of personal jurisdiction. In doing so, the court held that defendant did not purposefully avail itself of the jurisdiction of the forum state, even though it attended tradeshows there, because other parties selected the location of the tradeshows. The court also rejected the plaintiff’s argument that jurisdiction was proper, because the defendant engaged in enforcement activities in another country which affected the plaintiff’s bottom line, and sent a single cease-and-desist letter to the plaintiff in the forum state.