Tag Archives: Permissive Counterclaim

Ninth Circuit Holds That A Federal Court May Exercise Supplemental Jurisdiction Over a State Law Claim Even Where the Federal Claim is a Permissive Counterclaim Under Fed. R. Civ. P. 13(b)

In Zunun Aero, Inc. v. The Boeing Co., No. 24-5212 (9th Cir. Aug. 26, 2026), on a petition for panel rehearing, the Ninth Circuit holds that a federal court may exercise supplemental jurisdiction over state-law claims, under 28 U.S.C. § 1367(a), even where the federal-law claim is a permissive counterclaim under Fed. R. Civ. P.Continue reading “Ninth Circuit Holds That A Federal Court May Exercise Supplemental Jurisdiction Over a State Law Claim Even Where the Federal Claim is a Permissive Counterclaim Under Fed. R. Civ. P. 13(b)”