This project aims to design Principles and Guidelines to improve coordination between courts in Europe for insolvency and related proceedings.

The prohibition of anti-competitive unilateral conduct by firms with market power is not absolute, but allows for derogation.

On 5 June, Maarten Aalbers defended the thesis 'The balancing of general interests in EU State Aid Law: blurred lines between the prohibition and the compatibility of aid'. The doctoral research was supervised by Pieter van Cleynenbreugel and Stefaan van den Bogaert.

The euro crisis of 2010 has shown that the Eurozone lacks economic cohesion and that EU fiscal integration is needed for a stable euro. But can this integration exist without clashing with the national constitutional interests of the Member States? Frederik Behre looked into this matter in his PhD-thesis…

The Global Summit on Constitutionalism took place from 16 to 18 March. Wim Voermans, Gert Jan Geertjes and Rowie Stolk, from the Department of Constitutional and Administrative Law, travelled to Austin where the conference was organised by the School of Law of the University of Texas at Austin.

Vasiliki Kosta participated in the García Pelayo Seminar of the Center for Political and Constitutional Studies, Madrid entitled: ‘Discretionary Powers and Judicial Review: What Destiny for the Principle of Proportionality?’

The Board of Leiden University has appointed Armin Cuyvers as a full professor of European Law, specifically EU Constitutional Law and Comparative Regional Integration, effective per 1 September 2021.

Irma Johanna Mosquera Valderrama is Full Professor Global Tax Governance, EU Holder Jean Monnet Chair EUTAXGOV at Leiden Law School (Leiden University), the Netherlands and Lead Researcher of the European Research Council (ERC) Funded Project – GLOBTAXGOV.

Selim Ahmetoğlu defended his thesis on 12 February 2019.

Professor Versteeg is currently Professor of Law at Virginia School of Law in the United States, where she has been working since 2011 as Miller Center Director and Human Rights Program Director at the Center for Comparative and International Law University of the Virginia School of Law.

Ending the United Kingdom’s (UK) forty-seven year European Union (EU) membership has fundamentally transformed its relationship with the EU. After years of tumultuous negotiations, international law now once again governs the UK’s relationship with the EU. This has resulted in a sophisticated body of…

This paper aims to understand the most common underlying problems causing strategic surprise in the context of the European Union.

Brendan Carroll promoted On Thursday October 30th Brendan Carroll successfully defended his PhD dissertation entitled:

On 8 October, an inspiring session was held at the KOG Building. The session focused on the award-winning book entitled 'The Story of Constitutions' by Professor Wim Voermans, recently published by Cambridge University Press. The event attracted a diverse audience comprising both colleagues and students…

Is EU law still supreme? Most national high courts have formulated some limits on the absolute supremacy claimed by EU law.

The Europa Instituut is pleased to announce that on 21 November 2016 a new handbook “EU State Aids” (31 Chapters, 1500 pages) was published.

For a long time, in the United States ‘Schmoozes’ have been organized. These small-scale meetings offer the opportunity to informally discuss important themes. On 12 and 13 October, the first European Schmooze took place in Milan. The topic was ‘Economic Inequality as a Global Constitutional Challenge’.…

EUMOTIONS explores the role of emotions expressed by political elites (at EU- and member state-level) in framing the EU’s policy options during international crises.

Leiden2022 is holding the event for young researchers from 12 to 18 September 2022: the EU Contest for Young Scientists (EUCYS).

For a Union closer to its citizens: social psychological insights into EU-level redistribution and perceived legitimacy.

Development of scenarios for 2050 detailed in an IO framework

Despite an increased EU role in the preparedness, monitoring and coordination of health emergencies over the past two decades, Member States’ responses to the first wave of COVID-19 were surprisingly uncoordinated. In light of calls to improve cooperation regarding future health emergencies, this article…

The Research Handbook on Labour, Business and Human Rights Law edited by prof. Janice Bellace of the University of Pennsylvania and ass. prof. Beryl ter Haar of Leiden University. The book is publisehd in Edward Elgars series on Human Rights.

On Tuesday 12 January 2021, the Leiden Law School thesis prizes were awarded at the New Year’s event.

The institute that focuses on Public Law is as broad as the field itself. The Institute of Public Law has six departments, each with its own research agenda.

The Department of Constitutional and Administrative Law of Leiden University has published a collection of research essays on the separation of powers. This collection addresses the main question of whether the historically developed combination of concepts of democratic legitimacy and the separation…

Roel Becker and Jelle But recently joined the Department of Constitutional and Administrative Law as PhD candidates.

'Een nieuw commentaar op de Grondwet' is the title of a book published this week. The book uses 35 essays to describe the importance of the Constitution to the Dutch democratic rule of law.

While acknowledging prominent legal-philosophical debates, this project proposes a radically different approach to provide insights into the concept of the rule of law.

The Jean Monnet EU Research Seminar Series aims at engaging a wider community of EU scholars at the University and bring excellent academics to Leiden, at various stages of their careers, to present their cutting-edge research and stimulate debate at a highest academic level.

Just Published: EU Banking and Insurance Insolvency (second edition) Authored and Edited by Gabriel Moss QC, Bob Wessels and Matthias Haentjens Published by Oxford University Press

On 28 June, Jakob Tobing defended the thesis 'The essence of the 1999-2002 constitutional reform in Indonesia: remaking the Negara Hukum. A socio-legal study'. The doctoral research was supervised by Jan Michiel Otto and Adriaan Bedner.

How to explain the apparent high success rates of the EU infringement procedures, which are the major tools for enforcing EU law, against the member states?

In this lecture professor Harding considered the implications of Asia's 21st-century rise for its legal systems and our approaches to studying them in the new situation we confront in the early 21st century.

Recently, Wim Voermans, Professor of Constitutional and Administrative Law, and Jaroslaw Kantorowicz, Assistant Professor at the Institute of Security and Global Affairs and a research associate at the Department of Economics, were awarded a grant from the KNAW Statesman Thorbecke Fund. This grant will…

The first 'Tafel van Thorbecke' took place at Leiden University on Thursday 17 November 2022. For this new lecture series, initiated by Fatma Çapkurt and Gert Jan Geertjes, external scholars will be invited to speak about their research in the field of constitutional and administrative law.

Politicians' statements often involve emotions, shaping public perceptions. This study highlights the role of emotions in EU foreign policy.

On Friday 2 June 2023, Vincent Delhomme, Assistant professor at the Europe Institute at Leiden Law School, successfully defended his PhD thesis entitled : ‘Regulating lifestyle risks in EU law: Promoting health in a diverse market’.

The Farm to Fork Strategy seeks to transform the EU food system towards greater sustainability. To do this, Vincent Delhomme argues, some of the traditional concepts and doctrines in EU internal market law need to be challenged and rethought.

This thesis describes the design and development of subunit‐selective inhibitors of particular catalytically active subunits of human constitutive proteasomes and immunoproteasomes.

Hart Publishing in Oxford has published the first book in a series entitled ‘Restatement of Labour Law in Europe’. This particular book deals with the question of which employees are protected by labour law (‘The concept of employee’).

Systematic investigations into religious precepts, worldly rules of law and legal practices in the Muslim world show clearly how these societies deal with justice and injustice. Sharia, the Islamic ‘legal system’, plays an important role in this context.

‘Who will succeed Frans Timmermans in Brussels?’ is the title of the article in Dutch financial newspaper Financieele Dagblad (FD). Various candidates have been reviewed and all are contenders. But a female candidate may still have an advantage, believes Luuk van Middelaar, Professor of Foundations…