Arbitration — Jurisdiction — Bilateral investment treaty — Treaty between two Member States of the European Union — Whether provision for investor–State arbitration compatible with European Union law — Applicable law — Whether including European Union law — Nature of arbitration tribunal — Relationship with national courts and with Court of Justice of the European Union

Economics, trade and finance — Investment — Bilateral investment treaty — Treaty between two Member States of the European Union — Arbitration provision — Whether provision for arbitration of investor–State dispute compatible with European Union law

Treaties — Bilateral investment treaty — Agreement on Encouragement and Reciprocal Protection of Investments between the Kingdom of the Netherlands and the Czech and Slovak Federal Republic, 1991 — Whether investor–State dispute resolution provision providing for arbitration compatible with Treaty on the Functioning of the European Union, 2007

Relationship of international law and municipal law — European Union law — Double nature of European Union law as part of the law in force in every Member State and as deriving from an international agreement between the Member States — Relationship between rights accorded to investors under bilateral investment treaty and principles of European Union law — The law of the European Union