Humboldt-Universität zu Berlin - Faculty of Law

I. Articles 

• Varieties of an Effects-Based Approach to Abuse of Dominance: Understanding the Two Concepts of Presumptions in The EU Commission's Draft Guidelines on Exclusionary Abuses, Nordic Journal of European Law (NJEL), Vol. 8(3) (2025), pp. 145-173.
• To Fine, or not to Fine: Reconciling Effective Enforcement with Fundamental Rights in Times of an Effects-based Approach to EU Competition Law, Journal of Antitrust Enforcement (JAE), published online in advance (with Lennart Enwaldt) [SSRN].
• How to Fix a Failing Art. 102 TFEU: Substantive Interpretation, Evidentiary Requirements and the Commission’s Future Guidelines on Exclusionary Abuses, Journal of European Competition Law & Practice (JECLAP), Vol. 15(4) (2024), pp. 222-243 (with Heike Schweitzer).
  • Awarded the Antitrust Writing Award 2025 in the category Academic Articles: Unilateral Conduct 

II. Other 

• Lowering Evidentiary Requirements for the Commission’s Decision Making: The Case for Purely Administrative Procedures, Kluwer Competition Law Blog, 17 September 2025 (Lennart Enwaldt).
• Heike Schweitzer (1968-2024), ORDO – Jahrbuch für die Ordnung von Wirtschaft und Gesellschaft (ORDO - Yearbook for the organisation of economy and society), Vol. 74 (2025), pp. 463-487 (with Lennart Enwaldt, Frederik Gutmann, Philipp Hornung, Jonas von Kalben, Robert Welker, Kai Woeste and Maximilian Wolters).
• Ein Jahr ohne Heike Schweitzer: Blicke zurück und Blicke nach vorn beim Gedenken im Reichstagsgebäude (A year without Heike Schweitzer: Looking back and looking ahead at the commemoration in the Reichstag building), D'Kart Antitrust Blog, 20 June 2025. 
• In the Pursuit of Workability: Presuming Exclusionary Effects, EU Law Live’s Competition Corner, 7 November 2024.
• How to Fix a Failing Art. 102 TFEU, Oxford Business Law Blog, 21 May 2024.

III. Presentations

• To fine, or not to fine, 20th ASCOLA Conference, Academic Society for Competition Law (ASCOLA) & Loyola University Chicago School of Law, Chicago, USA, 27 June 2025 (with Lennart Enwaldt). 
• Understanding the Two Concepts of Presumptions in the EU Commission's Draft Guidelines on Exclusionary Abuses, 9th Bergen Competition Policy Conference, Bergen Center for Competition Law & Economics (BECCLE) & Universitetet i Bergen, Norway, 5 June 2025.
• PhD Café #4: Simon de Ridder, Humboldt University / Teodora Groza, Sciences Po Law School: DMA & Beyond, Digital Markets Research Hub, 29 April 2025 (Interview-guest).