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The PSPP-ruling of the German Federal Constitutional Court has caused a lot of commotion and has already been described as “a declaration of war on the ECJ.” In my article “The ‘cooperative relationship’ between the German Federal Constitutional Court and the European Court of Justice after the PSPP Ruling – On the Viability of the European Constitutional Court Network,” which was just published in Der Staat, I analyze what consequences the first-time refusal to apply EU law in the German legal order has for the “cooperation relationship” between the FCC and the ECJ and what the future of the European constitutional court network may look like after this ultra vires case.

Here is the English abstract of the German written article:

The article analyzes the consequences of the PSPP ruling for the cooperative relationship between the German Constitutional Court and the European Court of Justice. It argues for a sober perspective instead of martial exaggerations and against apportioning one-sided blame. Rather, reciprocal cooperation and confrontation are inherent in the network structure of the judicial relationship. Although the ruling creates a crisis, it does not yet mark the end of the “cooperative relationship”. The idea that the judicial conflict can only be resolved by third parties, whether in the form of infringement proceedings or by a Mixed Grand Chamber for the delimitation of EU competences, underestimates the delicately balanced functioning of the judicial dialogue and harbors a worrying potential for escalation. The impulse to legally enforce the restoration of European legal unity despite fundamental dissent may end up escalating the judicial conflict and making a solution even more difficult.

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Oktober 22nd, 2025

October 22, 2025 – EUI Visitors’ Seminar

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Oktober 21st, 2025

October 21, 2025 – Presentation at the EUI International Law Working Group on „Reflections on ICJ’s climate change advisory opinion“

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Oktober 14th, 2025

October 14, 2025 – Presentation at the EUI on „The role and limits of fourth branch institutions in preserving and promoting democracy“

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September 27th, 2025

September 27, 2025 – Presentation at the inaugural ELU-S conference in Prague

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September 1st, 2025

1 September 2025 – Research stay at the European University Institute in Florence

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September 1st, 2025

September 1, 2025 – Appointment as professor of public law, especially public economic law, at Chemnitz University of Technology

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August 25th, 2025

New blog post on the ICJ’s Advisory Opinion on Climate Change

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Juni 28th, 2025

28 June 2025 – Presentation at the Humboldt-Princeton Workshop on “Separation of Powers and Judicial Independence” in Berlin

On 27 and 28 June 2025, I participated in an international workshop on “Separation of Powers and Judicial Independence” at […]

Juni 24th, 2025

24 June 2025 – Special Issue on the 50th Anniversary of the Solange I-Decision published in ZaöRV

The outcomes of the international conference marking the 50th anniversary of the Solange I decision of the German Federal Constitutional [...]
Mai 29th, 2025

May 29, 2025 – Presentation at the research workshop „The Political Universes of International Courts“ in Glasgow

On May 29, 2025, together with my research assistant Denise Köcke, we presented her current research project at the research […]