In the 1936 case of Fox v. Capital Company, the United States Supreme Court ruled on a matter involving copyright infringement in relation to motion pictures. The plaintiff, William Fox, claimed that his copyrighted film was unlawfully used by Capital Co., which had produced a similar movie using substantial elements from his original work. The court found that there were indeed significant similarities between the two films and held that this constituted an infringement of Fox's copyright protection. The decision further clarified how courts should approach cases of alleged copyright violation in terms of determining whether or not actual copying occurred and if such copying amounts to unlawful appropriation. It emphasized that these are questions best answered by comparing the works in question rather than relying solely on testimonies about their creation process. This ruling reinforced protections for creators under U.S. Copyright Law while also providing guidance for future litigation related to intellectual property rights within creative industries like filmmaking.

In the dissenting opinion for FOX v. CAPITAL COMPANY, Justice Cardozo disagreed with the majority's decision to uphold a lower court ruling that allowed Fox Film Corporation to sue Capital Company for copyright infringement. He argued that Fox had not adequately proven its claim of exclusive rights over the films in question and therefore did not have grounds to sue Capital Company. Furthermore, he contended that even if Fox could prove it held exclusive rights, it failed to demonstrate how Capital Company infringed upon these rights by simply broadcasting the films on radio without any alterations or modifications. Justice Cardozo believed this case raised important questions about what constitutes copyright infringement in an era of new technologies like radio broadcasting, but felt those questions remained unanswered due to insufficient evidence presented by Fox.