The aim of the article is to determine the common and distinct features in the relationship between the copyright law and antitrust law. In this point of view, those cases are stressed in the article, in which it can come to concurrence between both branches of law. Copyright law and Intellectual property law as well, include in itself an exlusivity, therefore the possible restrain of the competition in the market can not be precluded. In the article are emphasised cases, when it can come to anticompetitive behaviuor on the market and that by concluding agreements restricting competition or by abusing of a dominant position on the market. Those cases are especially those, when contractual terms in the licences are able, after fulfilling special circumstances, to restrict the competition. Collective management organizations of copyright and related rights are also not allowed to perform those activities, which can lead to separation of the market. Effective disclosure of anticompetitive behaviour is therefore an actual question in the context of EC law and Slovak legal system as well.