ABSTRACT
This article has two main sections. In the first section, we define intellectual property and represent brief history of this matter in Iran and the world. In the second section that is the essential section of this article, the causes and factors of infringement of intellectual property rights in Iran have been discussed. The reasons of infringement divided into six main causes and under each cause the subsidiary factors that stem from it was discussed. In this section we discussed following main topics: The lack of a culture valuing the intellectual property in society, non dominance of research-based culture, governmental and political reasons, the lack of proper provisions and weakness of judiciary system, the lack of comprehensive system of research information, the lack of protective institutions and private collective management and religious and jurisprudential context and finally economic reasons