The intellectual property rights of third parties should not be affected by this Regulation. This Regulation should neither affect the existence or ownership of intellectual property rights of public sector bodies nor limit the exercise of those rights in any way. The obligations imposed in accordance with this Regulation should apply only insofar as they are compatible with international agreements on the protection of intellectual property rights, in particular the Berne Convention for the Protection of Literary and Artistic Works (Berne Convention), the Agreement on Trade-related Aspects of Intellectual Property Rights (TRIPS Agreement) and the World Intellectual Property Organization Copyright Treaty (WCT), and Union or national intellectual property law. Public sector bodies should, however, exercise their copyright in a way that facilitates re-use.