The Preliminary Ruling Procedure: A Cornerstone of Intergovernmental Coordination in the European Union
The Preliminary Ruling Procedure: A Cornerstone of Intergovernmental Coordination in the European Union

Summary/Abstract: The preliminary ruling procedure, enshrined in Article 267 of the Treaty on the Functioning of the European Union (TFEU), stands as a fundamental mechanism of judicial cooperation and legal integration. While seemingly a technical legal tool, it is, in practice, the primary engine of a unique legal order that navigates and resolves the inherent tensions between the European Union's supranational ambitions and the national sovereignty of its Member States. This report argues that the procedure is not merely a method for interpreting European Union (EU) law; it is a collaborative dialogue between the Court of Justice of the European Union (CJEU) and national courts, which has been instrumental in shaping the EU's constitutional architecture. Through a series of landmark cases, the preliminary ruling procedure has operationalized foundational doctrines such as direct effect and the supremacy of EU law, thereby empowering citizens and ensuring the uniform application of EU legislation across the Union. Despite persistent challenges related to judicial discretion and the complexities of multilevel governance, the procedure's enduring effectiveness, as demonstrated by its high volume of cases and recent institutional reforms, confirms its central role as the "jewel in the crown" of the EU legal system.

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