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1. Any State may, at the time of ratification, acceptance or accession, or at any time thereafter, declare by notification addressed to the Secretary-General of the United Nations that this Convention shall extend to all or any of the territories for whose international relations it is responsible, provided that the Universal Copyright Convention or the International Convention for the Protection of Literary and Artistic Works applies to the territory or territories concerned. This notification shall take effect three months after the date of its receipt.
2. The notifications referred to in paragraph 3 of Article 5, paragraph 2 of Article 6, paragraph 1 of Article 16 and Articles 17 and 18, may be extended to cover all or any of the territories referred to in paragraph 1 of this Article.