Much has been written about the antitrust intellectual property conflict. The former promotes competition by prohibiting monopolies that harm competition, while the latter promotes competition by granting monopolies. This paper focuses on refusals to deal in intellectual property rights as violation of antitrust law. The paper explores refusals to deal as monopolistic conduct in antitrust law and relates this with refusals to deal in intellectual property. The thesis concludes with an analysis of the success rate of antitrust scrutiny of intellectual property rights.