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 act in accordance with the Treaties and the legal framework established under EU law.

The CJEU occupies a central position within the institutional architecture of the European Union. Its decisions carry binding legal force and shape the development of EU law across a wide range of policy areas, from the internal market and competition to fundamental rights and institutional accountability.

The Court's authority derives from the founding Treaties of the European Union, which confer upon it jurisdiction to resolve disputes involving member states, EU institutions, businesses, and individuals. Understanding the Court's structure and function is essential for anyone seeking to engage with EU law in a meaningful way.

Institutional structure of the CJEU

The Court of Justice of the European Union is not a single court but rather an institution comprising two distinct courts: the Court of Justice and the General Court. Each court has its own jurisdiction, composition, and procedural rules, though both operate under the overarching institutional framework of the CJEU.

The Court of Justice is the highest court within the CJEU structure. It deals with requests for preliminary rulings from national courts, certain actions for annulment and failure to act, appeals from the General Court, and other matters assigned to it under the Treaties. It is composed of one judge from each member state, assisted by Advocates General who deliver impartial opinions on cases before the Court.

The General Court, which forms the second tier of the CJEU, has jurisdiction to hear direct actions brought by individuals, companies, and, in some cases, member states against acts of the EU institutions. It also handles cases relating to EU trade marks and other specific areas of EU law. The General Court is composed of at least one judge per member state, and its decisions may be subject to appeal to the Court of Justice on points of law.

The legal framework governing the CJEU

The legal basis for the Court of Justice of the European Union is found in the Treaties on which the European Union is founded, principally 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.

The Statute of the Court of Justice of the European Union, which is annexed to the Treaties as a Protocol, sets out detailed provisions governing the organisation, composition, and procedure of the Court. This Statute can be amended by the ordinary legislative procedure, reflecting the importance the EU legal order places on the adaptability of the Court's institutional framework.

The Rules of Procedure of each court further elaborate the practical and procedural aspects of litigation before the CJEU. These rules govern matters such as the lodging of pleadings, the conduct of hearings, the language of proceedings, and the delivery of judgments. Both the Statute and the Rules of Procedure are published in the Official Journal of the European Union and are available through EUR-Lex.

Key functions and types of proceedings

One of the most significant functions of the Court of Justice is the preliminary ruling procedure. Under this mechanism, national courts 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 questions is then binding on the referring court and guides the application of EU law throughout the member states, ensuring legal consistency across the Union.

The CJEU also hears infringement proceedings, which may be brought by the European Commission or by a member state against another member state that is alleged to have failed to fulfil its obligations under EU law. These proceedings are an important enforcement mechanism within the EU legal order and can result in financial penalties being imposed on member states found to be in breach.

Actions for annulment allow member states, EU institutions, and in certain circumstances individuals and companies, to challenge the legality of acts adopted by EU institutions, bodies, offices, or agencies. Actions for failure to act enable parties to challenge the unlawful inaction of EU institutions. Together, these proceedings form a comprehensive system of judicial review that underpins the rule of law within the European Union.

Accessing CJEU resources and official information

The official website of the Court of Justice of the European Union, available at curia.europa.eu, provides comprehensive information about the Court's structure, jurisdiction, and procedures. It also offers access to the Court's case law, including judgments, orders, and Advocate General opinions, which are published in full and made freely available to the public.

EUR-Lex, the official EU law database maintained by the Publications Office of the European Union, is the primary source for accessing the Treaties, legislation, and other legal acts of the European Union. It provides access to the consolidated versions of the TEU and TFEU, the Statute of the Court of Justice, and the Official Journal of the European Union, all of which are essential reference points for understanding the legal framework within which the CJEU operates.

Both curia.europa.eu and EUR-Lex are authoritative, freely accessible online resources that support legal research, academic study, and informed engagement with EU law. Researchers, legal practitioners, students, and members of the public are encouraged to consult these official sources directly when seeking accurate and up-to-date information about the CJEU and EU law more broadly.

Conclusion

The Court of Justice of the European Union plays an indispensable role in the functioning of the European Union's legal order. Through its two constituent courts, the Court of Justice and the General Court, the institution ensures the uniform interpretation and application of EU law, upholds the rule of law, and provides judicial protection to individuals, member states, and institutions operating within the EU framework.

The legal framework governing the CJEU, rooted in the founding Treaties and elaborated through the Statute and Rules of Procedure, reflects the Union's commitment to a rules-based legal system in which judicial oversight is both independent and effective. Familiarity with this framework is an important foundation for understanding how EU law operates in practice.

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