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The most complete database on the Court of Justice of the European Union (CJEU).

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Research Using IUROPA Data

Peer-reviewed publications and working papers using the IUROPA database, across law, political science, and economics.
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AllEU lawEuropean integrationgenderjudicial politicsCJEUlegal doctrinequantitativejudicial efficiencyinstitutional reformjudicial biaslitigationcomputational methodsprecedentnetwork analysisEuropean Commissionpreliminary rulingsjudicial deferencerule of law
39 publications
EU lawEuropean integration

Beyond Leaders and Laggards: Member State Compliance with European Union Environmental Law

Tanja Börzel, Andreas HofmannHandbook on European Union Environmental Policy2026
genderjudicial politics

Beyond the Glass Ceiling, More 'Housework'? Women's Work Assignment, Performance and Influence in Political Institutions

Louisa BoulazizJournal of Politics2026
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CJEUEU lawquantitative

Building Multi-User Databases for Empirical Legal Studies of European Union Law

Daniel Naurin, Johan Lindholm, Urska Sadl, Anna Wallerman GhavaniniEmpirical Legal Studies in EU Law2026
CJEUlegal doctrineEU law

Crisis Jurisprudence: The Legal Interpretation of European Citizenship during the Financial Crisis and Brexit

Eftychia ConstantinouEuropean University Institute2026
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CJEUlitigationEU law

EU Law Litigation: Who Litigates, Who Influences Judges, What Downstream Effects?

Silje Synnøve Lyder Hermansen, Tommaso PavoneEmpirical Legal Studies of EU Law2026
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CJEUjudicial politicslegal doctrine

How Much Influence Do Opinion-Writers Have on Per Curiam Courts? Uncovering Author Drift in Written Decisions at the European Court of Justice

Sivaram Cheruvu, Jeffrey ZieglerJournal of Law and Courts2026
litigationEU lawEuropean integration

Legal Mobilisation in EU Foreign Policy - a Framework for Going beyond Case Studies

Andreas HofmannInternational Spectator2026
CJEUjudicial politicsquantitative

Shaping the Bench: The Effect of Ideology and Influence on Judicial Reappointments

Silje Synnøve Lyder Hermansen, Daniel NaurinThe Journal of Politics2026
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CJEUpreliminary rulingsjudicial deference

The Questions That Never Came: How National Judges Use Their Discretion in the Preliminary Ruling Procedure

Isak NilssonEuropean Journal of Empirical Legal Studies2026
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EU lawEuropean Commissioninstitutional reform

What Happened to Centralised Enforcement?

Andreas HofmannEmpirical Legal Studies in EU Law2026
CJEUjudicial biasquantitative

Are European Court of Justice Judges Biased towards Their Member States?

Sivaram CheruvuEuropean Union Politics2025
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CJEUlitigationEuropean integration

Authority Transfer and Governmental Legal Contestation before the Court of Justice of the EU

Henning Deters, Jonas BornemannEuropean Political Science Review2025
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CJEUlegal doctrine

Complexity on Trial: The Role of Legal Complexity in the CJEU

Stein Arne BrekkeWorking Paper2025
CJEUEU lawlegal doctrine

Die Soziale Dimension Des Unionsrechts in Der Rechtsprechung Des EuGH - Bedeutung Und Wege Zur Stärkung

Olaf Deinert, Andreas Hofmann, Esra Özen, Philipp ThielHSI2025
CJEUEuropean Commissionrule of lawjudicial politics

Follow the Leader: The European Commission, the European Court of Justice, and the EU's Rule of Law Revolution

Mauricio Mandujano Manriquez, Tommaso PavoneJournal of European Public Policy2025
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CJEUjudicial biasEU law

How 'Labour Friendly' Is the Court of Justice of the European Union?

Andreas HofmannWorking Paper2025
CJEUjudicial politicsjudicial biasquantitative

Ideology and Agenda Setting on the Court of Justice of European Union: Evidence from Anti-Trust and State Aid Cases

Silje Synnøve Lyder Hermansen, Erik VoetenAPSA Preprints2025
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CJEUlitigationjudicial politicsquantitative

Leveling and Spotlighting: How the European Court of Justice Favors the Weak to Promote Its Legitimacy

Silje Synnøve Lyder Hermansen, Tommaso Pavone, Louisa BoulazizBritish Journal of Political Science2025
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CJEUlitigationlegal doctrine

Negative References to Amicus Briefs in Judicial Reasoning

Johan Lindholm, Daniel Naurin, Philipp SchroederJournal of Law and Courts2025
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CJEUEU lawquantitativelegal doctrine

Substantive Modernization in EU Competition Law: An Empirical Comparison

Eun Hye KimJournal of Competition Law & Economics2025
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CJEUprecedentnetwork analysis

Symbolic vs. Structural Precedent after Lisbon: Co-Citation Networks Analysis of CJEU Case Law (2008-2015)

Sara Geremia, Alessio SardoWorking Paper2025
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CJEUjudicial politicsinstitutional reform

The Apex Court's Dilemma: Rulemaking Alignment Under Hierarchical and Political Constraints

Mauricio Mandujano ManriquezWorking Paper2025
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CJEUEuropean integrationjudicial politics

The European Court of Justice and Legal European Integration

Thomas König, Stefan EschenweckerEuropean Union Politics2025
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CJEUlegal doctrinequantitative

The European Court of Justice Dataset: Legal Issues and Doctrine

Urška Šadl, Stein Arne Brekke, Lucía López Zurita, Eun Hye KimJournal of Law & Empirical Analysis2025
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CJEUquantitative

A Note of Caution on CJEU Databases

Michal OvádekEuropean Law Open2024
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CJEUjudicial deferencepreliminary rulings

A Spoonful of Sugar: Deference at the Court of Justice

Lucía López Zurita, Stein Arne BrekkeJCMS: Journal of Common Market Studies2024
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CJEUjudicial biasjudicial politicsquantitative

Are Judges on Per Curiam Courts Ideological? Evidence from the European Court of Justice

Sivaram CheruvuJournal of Law and Courts2024
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CJEUpreliminary rulingsEU law

Fundamental Rights Complaints in the Preliminary Reference Procedure

Lucía López ZuritaRedressing Fundamental Rights Violations by the EU: The Promise of the 'Complete System of Remedies'2024
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CJEUprecedentjudicial deferenceEU law

National Constitutional Courts' Use of the ECJ's Precedents: The Case Study of Czechia

Marek Pivoda, Štěpán Paulík, Sebastian KřepelaMaastricht Journal of European and Comparative Law2024
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CJEUjudicial deferencepreliminary rulingsquantitative

Seizing Opportunities: The Determinants of the CJEU's Deference to National Courts

Philipp SchroederJournal of European Public Policy2024
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CJEUjudicial politics

Speaking Law, Whispering Politics. Mechanisms of Resilience in the Court of Justice of the European Union

Stein Arne BrekkeEuropean University Institute2024
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CJEUjudicial politicslegal doctrinequantitative

The European Court of Justice, an Able and Unwilling Lawmaker: Evidence from 920 Free Movement of Persons Judgments

Urška Šadl, Silje HermansenRevisiting Judicial Politics in the European Union2024
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CJEUprecedentquantitative

Theorizing and Measuring the Precedential Value of Case Law: Lessons from the European Union

Joshua Fjelstul, Johan Lindholm, Daniel Naurin, Michal OvadekWorking Paper2024
EU lawquantitative

Where Law Meets Data: A Practical Guide to Expert Coding in Legal Research

Michal Ovádek, Philipp Schroeder, Jan ZglinskiEuropean Law Open2024
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CJEUlegal doctrinequantitative

From One to Many: Identifying Issues in CJEU Jurisprudence

Philipp Schroeder, Johan LindholmJournal of Law and Courts2023
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CJEUjudicial efficiencyinstitutional reform

That's an Order! How the Quest for Efficiency Is Transforming Judicial Cooperation in Europe

Stein Arne Brekke, Daniel Naurin, Urška Šadl, Lucía López-ZuritaJCMS: Journal of Common Market Studies2023
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CJEUquantitative

The CJEU Database Platform: Decisions and Decision-Makers

Stein Arne Brekke, Joshua C Fjelstul, Silje Synnøve Lyder Hermansen, Daniel NaurinJournal of Law and Courts2023
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CJEUjudicial efficiencyinstitutional reformcomputational methods

The Timely Administration of Justice: Using Computational Simulations to Evaluate Institutional Reforms at the CJEU

Joshua C. Fjelstul, Matthew Gabel, Clifford J. CarrubbaJournal of European Public Policy2023
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CJEUinstitutional reformjudicial efficiency

Law and Orders: The Orders of the European Court of Justice as a Window in the Judicial Process and Institutional Transformations

Urška Šadl, Lucía López Zurita, Stein Arne Brekke, Daniel NaurinEuropean Law Open2022
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