1. Complaints may be submitted by: (a) Member States (b) natural or legal persons who claim a legitimate interest.
2. Where the Commission, either on its own initiative or at the request of a Member State or of natural or legal persons claiming a legitimate interest, finds that in any particular case the conduct of conferences benefiting from the exemption laid down in Article 3 nevertheless has effects which are incompatible with Article 86 of the Treaty, it may withdraw the benefit of the block exemption and take, pursuant to Article 10, all appropriate measures for the purpose of bringing to an end infringements of Article 86 of the Treaty.
