1.   With a view to ensuring that the provisions referred to in Article 1 are applied and interpreted as uniformly as possible, the Contracting Parties shall keep under constant review the development of the case-law of the Court of Justice of the European Union and of the competent courts of the Principality of Liechtenstein relating to those provisions. To this end, a mechanism shall be set up to ensure the regular mutual exchange of such case-law.

2.   The Principality of Liechtenstein shall be entitled to submit statements of case or written observations to the Court of Justice of the European Union in cases where a question has been referred to it by a court or tribunal of a Member State for a preliminary ruling concerning the interpretation of any provision referred to in Article 1.

Any dispute between the Principality of Liechtenstein and a Member State regarding the interpretation or the application of this Agreement or of any of the provisions referred to in Article 1 and amendments thereto may be referred by a party to the dispute to a meeting of representatives of the governments of the Member States and of the Principality of Liechtenstein, with a view to its speedy settlement.

1.   Where it is necessary to amend the provisions referred to in Article 1, the European Union shall inform the Principality of Liechtenstein at the earliest possible occasion and collect any comments it may have.

2.   The Principality of Liechtenstein shall be notified by the European Union of any amendment of the provisions referred to in Article 1 as soon as the amendment is adopted.

The Principality of Liechtenstein shall decide independently whether to accept the content of the amendment and whether to implement it into its internal legal order. That decision shall be notified to the European Union within three months of the date of the notification referred to in the first subparagraph.

3.   If the content of the amendment can be binding on the Principality of Liechtenstein only after the fulfilment of constitutional requirements, the Principality of Liechtenstein shall inform the European Union of this at the time of its notification. The Principality of Liechtenstein shall promptly inform the European Union in writing upon fulfilment of all constitutional requirements. Where a referendum is not required, notification shall take place as soon as the referendum deadline expires. If a referendum is required, the Principality of Liechtenstein shall have a maximum of eighteen months from the date of the notification by the European Union within which to make its notification. From the date laid down for the entry into force of the amendment for the Principality of Liechtenstein and until it has given notification that the constitutional requirements have been met, the Principality of Liechtenstein shall, where possible, apply the content of the amendment on a provisional basis.

4.   If the Principality of Liechtenstein does not accept the content of the amendment, this Agreement shall be suspended. A meeting of the Contracting Parties shall be convened to examine all further possibilities with a view to continuing the good functioning of this Agreement, including the possibility of a recognition of equivalence of legislation. Suspension shall be terminated as soon as the Principality of Liechtenstein notifies its acceptance of the content of the amendment or if the Contracting Parties agree to reinstate the Agreement.