The Court of Justice of the European Union: role, structure, and legal framework

Introduction to the Court of Justice of the European Union

The Court of Justice of the European Union (CJEU) is the judicial institution of the European Union. It is responsible for ensuring that EU law is interpreted and applied uniformly across all member states, and that the institutions of the Union, as well as member states and individuals, comply with the obligations established under EU law.

The CJEU sits in Luxembourg and forms a central pillar of the EU's institutional architecture. Its work touches on virtually every area of EU law, from the functioning of the internal market to the protection of fundamental rights, and from competition law to the interpretation of international agreements concluded by the Union.

Understanding the role and structure of the CJEU is essential for anyone seeking to engage with European Union law, whether as a legal practitioner, a student, a business, or a public authority operating within the EU legal order.

Institutional structure of the CJEU

The Court of Justice of the European Union is not a single court but rather an institution comprising three distinct courts: the Court of Justice, the General Court, and specialised courts. This tiered structure allows the institution to manage the significant volume and variety of cases that arise within the EU legal system.

The Court of Justice is the highest court within the institution. It is composed of one judge from each member state, ensuring broad representation across the Union. The Court of Justice is assisted by Advocates General, whose role is to deliver impartial and reasoned opinions on cases brought before the court. These opinions, while not binding, are highly influential in shaping the court's judgments.

The General Court handles a wide range of cases at first instance, particularly those brought by individuals, companies, and, in certain circumstances, member states and EU institutions. It was established to reduce the caseload of the Court of Justice and to improve judicial protection for those directly affected by acts of the EU institutions.

Specialised courts may be attached to the General Court to hear and determine at first instance certain classes of action in specific areas. The structure of the institution is therefore designed to be adaptable to the evolving demands of EU litigation.

Legal basis and governing framework

The legal basis for the CJEU is found in the Treaty on European Union (TEU) and the Treaty on the Functioning of the European Union (TFEU), both of which are accessible through EUR-Lex, the official EU law database. These treaties establish the court's jurisdiction, composition, and the procedures it must follow.

EUR-Lex provides public access to EU law, including the founding treaties, regulations, directives, decisions, and the case law of the CJEU. It serves as the authoritative repository for the legal instruments that define the scope and limits of the court's powers, as well as the procedural rules that govern how cases are brought and decided.

The Statute of the Court of Justice of the European Union, which is annexed to the treaties as a protocol, sets out detailed provisions on the organisation of the court, the status of judges and Advocates General, and the rules of procedure. This statute forms an integral part of the primary law of the Union and can be amended only through the ordinary legislative procedure or, in certain cases, by the court itself upon request to the European Parliament and the Council.

Secondary legislation, including regulations adopted by the Council and the European Parliament, further elaborates the procedural framework within which the CJEU operates. These instruments are also published and made freely accessible through EUR-Lex.

Jurisdiction and types of proceedings

The CJEU exercises jurisdiction over a range of different types of proceedings, each serving a distinct function within the EU legal order. The most significant of these, in terms of its impact on the uniform application of EU law, is the preliminary ruling procedure.

Under the preliminary ruling procedure, national courts and tribunals of member states may, and in certain circumstances must, refer questions of EU law to the Court of Justice for interpretation. The court's ruling on such a reference is binding on the referring court and, in practice, on all courts within the EU that subsequently face the same question of law. This mechanism ensures that EU law is applied consistently throughout the member states.

The CJEU also hears actions for failure to fulfil obligations, through which the European Commission or a member state may bring proceedings against a member state that has failed to comply with its obligations under EU law. If the court finds that a member state has indeed failed to fulfil its obligations, that state is required to take the necessary measures to comply with the judgment.

Actions for annulment allow member states, EU institutions, and, under certain conditions, individuals and companies to challenge the legality of acts adopted by EU institutions, bodies, offices, or agencies. Actions for failure to act enable proceedings to be brought where an EU institution has unlawfully failed to act. The CJEU also has jurisdiction in appeals from decisions of the General Court, ensuring a further layer of judicial oversight within the institution.

Access to CJEU resources and case law

The official website of the Court of Justice of the European Union, accessible through curia.europa.eu, provides comprehensive information about the institution, its composition, its procedures, and its case law. Members of the public, legal practitioners, researchers, and institutions can access judgments, orders, and Advocate General opinions through the court's online database.

EUR-Lex complements this by providing access to the full text of EU legislation, consolidated versions of treaties, and official publications of the EU institutions, including the Official Journal of the European Union. Together, these two official sources represent the primary means by which the legal framework governing the CJEU, and the court's own output, are made publicly available.

The availability of these resources in multiple official EU languages reflects the multilingual character of the Union and ensures that access to EU law is not restricted by language barriers. The court's judgments are authoritative in all official languages in which they are issued, though the language of the case is determined by specific procedural rules.

For those seeking to understand how EU law applies in a particular context, consulting the official sources maintained by the CJEU and EUR-Lex is the appropriate starting point. These sources provide the most accurate and up-to-date information on the state of EU law and the court's jurisprudence.

Significance of the CJEU in the EU legal order

The Court of Justice of the European Union plays a foundational role in maintaining the integrity and effectiveness of the EU legal order. Through its judgments, the court has developed and clarified fundamental principles of EU law, including the principles of direct effect and the primacy of EU law over conflicting national law, which are essential to the functioning of the Union.

The court's role in protecting fundamental rights is also significant. The Charter of Fundamental Rights of the European Union, which has the same legal value as the treaties, is applied and interpreted by the CJEU in cases that fall within the scope of EU law. This ensures that individuals can rely on fundamental rights protections when EU law is being implemented or applied.

The CJEU's relationship with national courts, particularly through the preliminary ruling mechanism, reflects the cooperative nature of the EU legal system. National courts are not subordinate to the CJEU in a hierarchical sense in the way that lower courts are subordinate to higher courts within a single national system. Rather, they are partners in the application of EU law, with the CJEU providing authoritative guidance on questions of interpretation.

The institution's work is therefore not only of legal significance but also of broader constitutional importance for the European Union. Its judgments shape the relationship between the Union and its member states, define the rights and obligations of individuals and businesses operating within the EU, and contribute to the ongoing development of a coherent and effective European legal order.

Final notice

This article is for educational and informational purposes only and does not constitute legal advice.

Sources consulted

• Court of Justice of the European Union - curia - Court of Justice of the European Union, European Union
• EUR-Lex - European Union, European Union