Article 6ter of the Paris Convention protects the flags and emblems of states that are party to the Paris Convention, as well as the names and emblems of international intergovernmental organizations (IGOs) against unauthorized registration and use as trademarks.
Article 6ter applies to all states which are party to the Paris Convention for the Protection of Industrial Property. The protection granted by Article 6ter is also extended to the names and emblems of IGOs whose members include at least one country of the Paris Union.

