James G. Cahill Et Al. v. John E. Regan

[5 N.Y.2d 292 Page 295] This case involves the question of whether a patent for a particular article, invented by defendant employee, belongs to
him or to his employers, the plaintiffs herein. The trial court found in favor of the defendant; the Appellate Division modified
the judgment, deciding that, although the patent belonged to the defendant, the plaintiffs had a "shop right" to use it. Both
parties have cross-appealed to this court.