Europos Sąjungos valstybių narių tarpusavio ginčai ir Europos Sąjungos Teisingumo Teismo jurisdikcija
Disputes between Members States of the European Union and Jurisdiction of the Court of Justice of the European Union

Summary/Abstract: The article aims at resolving the issue whether the Court of Justice of the European Union (CJEU) has an exclusive jurisdiction under Article 344 of the Treaty on Functioning of the European Union (TFEU) to resolve disputes between Member States, stemming from provisions of an international treaty, a party to which is the EU. This problem is especially relevant in cases when a mixed international agreement envisages independent institutions of dispute resolution. The position of the CJEU is expressed in the case of Mox Plant. The European Commission applied to the CJEU against Ireland, because it considered that Ireland, which started an arbitration procedure against United Kingdom under the UN Convention on the Law of the Sea, has infringed the exclusive jurisdiction of the CJEU under Article 344 of the TFEU. The EU is also a Contracting Party to the UN Convention on the Law of the Sea. Therefore according to the consistence case practice of the Court, the provisions of the Convention that fall under the competence of the Union constitute an indivisible part of the EU legal system. Only in such case when a provision of a treaty is attributed to exclusive competence of the Member States, the jurisdiction of the CJEU regarding that provision can be negated. Thus, when deciding on the issue of exclusive jurisdiction of the CJEU in principle, a problem of attribution of the EU and Member States’ competences arises. Although from the point of view of the EU law, the position of the CJEU on its competence regarding mixed international agreements seems to be reasonable, questions arise whether such a provision would be compatible with international law guarantees on the discretion of Member States to freely choose dispute resolution measures, provided under the relevant international treaty and whether jurisdiction of international courts is not overly restricted. It must be noted that under international law, consideration of disputes between Member States at international tribunals, established in accordance with the international treaty, would be lawful. However, under the EU law it can be treated as an infringement of the exclusive competence of the CJEU (Article 344 TFEU). Therefore, the Member States can find themselves in legal dead-end, in accordance with their obligations under international and EU law.

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