Medical Solutions, Inc. (“MSI”) appeals from a final judgment of the United States District Court for the District of Columbia dismissing MSI’s patent suit for lack of personal jurisdiction over C Change Surgical LLC (“CCS”). Medical Solutions, Inc. v. C Change Surgical LLC, 468 F. Supp. 2d 130 (D.D.C. Dec. 29, 2006). Because CCS’s demonstration of the allegedly infringing device at a trade show did not constitute a “use” under the patent laws, and because the district court did not abuse its discretion in denying MSI further jurisdictional discovery, we affirm.