Artikel 15

1. This Convention shall be open for signature by the member States of the Council of Europe, by non-member States that have participated in its elaboration and by the European Community.
2. This Convention is subject to ratification, acceptance or approval. Instruments of ratification, acceptance or approval shall be deposited with the Secretary General of the Council of Europe.
3. This Convention shall enter into force on the first day of the month following the expiration of a period of three months after the date on which fourteen signatories have expressed their consent to be bound by the Convention in accordance with the provisions of paragraph 2. Any such signatory, which is not a member of the Group of States against Corruption (GRECO) at the time of ratification, acceptance or approval, shall automatically become a member on the date the Convention enters into force.
4. In respect of any signatory which subsequently expresses its consent to be bound by it, the Convention shall enter into force on the first day of the month following the expiration of a period of three months after the date of the expression of their consent to be bound by the Convention in accordance with the provisions of paragraph 2. Any signatory, which is not a member of the Group of States against Corruption (GRECO) at the time of ratification, acceptance or approval, shall automatically become a member on the date the Convention enters into force in its respect.
5. Any particular modalities for the participation of the European Community in the Group of States against Corruption (GRECO) shall be determined as far as necessary by a common agreement with the European Community.