1. Any final decision of the Office fixing the amount of costs shall be enforceable.
2. Enforcement shall be governed by the rules of civil procedure in force in the State in the territory of which it is carried out. Each Member State shall designate a single authority responsible for verifying the authenticity of the decision referred to in paragraph 1 and shall communicate its contact details to the Office, the Court of Justice and the Commission. The order for the enforcement of the decision shall be appended to the decision by that authority, with the verification of the authenticity of the decision as the sole formality.
3. When these formalities have been completed on application by the party concerned, the latter may proceed to enforcement in accordance with the national law, by bringing the matter directly before the competent authority.
4. Enforcement may be suspended only by a decision of the Court of Justice. However, the courts of the country concerned shall have jurisdiction over complaints that enforcement is being carried out in an irregular manner.