The proposal of this work is to discuss the dynamics of interactions between states and between states and society, in which the main object is the production and access to knowledge - here understood as the state of the art, science and technology, and the beliefs and ideas about it. This dynamics is analyzed through the study of the Intellectual Property International Regime, what makes it necessary to discuss also regime theories and the meaning of regimes to International relations. Two separate and interconnected discussions will be developed, each one with its own aspects, and will bring us to conclusions both about the importance of regimes and about the dynamics of interactions on production and access to knowledge. The two main discussions are advanced through the analysis of regime changing. The changes are identified on the legal instruments which constitute the Intellectual Property regime, through the analysis of the debates over the agendas of revisions on these legal instruments, and through the exam of the coalitions created around particular interests of the actors in each of the different forum of negotiations. Another contribution this study intends to bring is a research on the literature about Intellectual Property that takes a theoretical approach and uses analytical tools of the discipline of International Relations.