It analyses the relationship of the two main IP conventions to the World Trade Organisation (WTO) Agreement on Trade Related Aspects of International Property Rights (TRIPS), as well as the relationship between TRIPS and Free Trade Agreements (FTAs).

The third part discusses alternative rule systems for the protection of IP in international law. The intellectual creations element of IP is captured by the concept of creator's rights in international human rights law; while the property aspect of IP is protected by international investment agreements and European human rights treaties.

Part Four focuses on three core intersections between the international IP system and other areas of international law related to environmental, social and economic concerns. The areas examined concern international law on trade, biological diversity and climate change. As in part three, the perspective taken is that of the 'other' area and how it perceives its relations with international IP norms.

In part five finally, the focus shifts back to the international IP system and the mechanisms it provides for taking into account the interests protected in other areas of international law.