Kalem Co. v. Harper Bros.  Kalem Co. v. Harper Bros., 222 U.S. 55 (1911), was a United States Supreme Court case in which the Court held producing a motion picture based on a dramatic work can be copyright infringement. The producer of the motion picture is liable even they are not the exhibitor. This does not extend to a restriction of the dramatic work's ideas; it is a recognition of the author's monopoly powers granted by Congress. The case involved a 1907 film adaptation of the 1880 novel "" by Lew Wallace.