Abbott Machine Co. v. Universal Winding Co.

WOODBURY, Circuit Judge.

The plaintiff-appellee, Universal Winding Company, a Massachusetts corporation, filed a petition for a declaratory judgment in the court below against the defendant-appellant, Abbott Machine Company, a New Hampshire corporation, asking for an adjudication that fourteen of the forty-one claims of patent number 2,160,810, issued on June 6, 1939, to Edward J. Abbott and assigned by him to the defendant are invalid, or, if valid, are not infringed by certain machines manufactured by the plaintiff. The defendant answered and filed a counterclaim alleging the validity of its…