Alton Box Board Company v. Esprit De Corp.

WALLACE, Circuit Judge:

Plaintiffs-appellants Alton Box Board Co. and twenty-eight other manufacturers of corrugated containers (the manufacturers) appeal from the district court’s grant of summary judgment for appellee Esprit de Corp. (Esprit). The primary question presented is whether the district court improperly refused to enjoin a state court action arising under state antitrust law, when another antitrust claim, challenging the same conduct but arising under federal antitrust law, is being prosecuted by different plaintiffs against the same manufacturers in a multidistrict action in…