Zunum Aero, Inc. v. The Boeing Company
Appellate jurisdiction — Federal Circuit's exclusive jurisdiction under 28 U.S.C. § 1295(a)(1) turns on whether a patent counterclaim is compulsory under FRCP 13(a); scope of supplemental jurisdiction under 28 U.S.C. § 1367(a) over state-law claims tied to a permissive federal counterclaim