Under Rule 13(a) of the Federal Rules of Civil Procedure (FRCP), entitled "Compulsory Counterclaim," the defendant must plead a counterclaim that arises out of the same "transaction or occurrence" as ...

Federal procedure requires a defendant to plead all counterclaims that arise out of the same transaction or occurrence as the plaintiff’s claim, or his claim may be barred in a later suit. Fed. R. Civ ...

Addressing jurisdictional issues under the America Invents Act (AIA), the US Court of Appeals for the Federal Circuit denied a petition for a writ of mandamus challenging a district court order ...

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In his New York Practice column, Patrick M. Connors writes that a plaintiff might elect to sue in a federal court hoping to compel the defendant to interpose as a counterclaim any claim arising out of ...