This Paper suggests that interdisciplinary cooperation and coordination should focus on IP policy issues as well. This Paper discusses whether greater emphasis on interdisciplinary cooperation and coordination could contribute to more effective international convergence. We address the topic as follows. Part 2 describes the interdependency between the CP and IP regimes and potential benefits of expanded cooperation between the two fields on a domestic level. Part 3 sketches the existing collection of domestic and international institutions that make up the CP and IP communities and examines the consequences of institutional multiplicity for efforts to achieve better harmony between the two regimes. Part 4 suggests approaches for improving coordination between the two fields.