Dr. Lena Hornkohl, LL.M.

Tenure Track Professor for European Law

Schottenbastei 10-16 (Juridicum)

1010 Wien

Stiege 1, 5. Stock, Raum 516

T: +43-1-4277-35904

E-Mail: lena.hornkohl [AT]



Consultations are subject to prior registration via email: lena.hornkohl [AT]

Curriculum Vitae

Lena Hornkohl studied law in Heidelberg and Uppsala. After obtaining her first state exam in 2014, she completed her legal clerkship at the Higher Regional Court Karlsruhe (with stages, inter alia, at the European Commission) and completed the second state exam in 2016. After having earned a master’s degree from the College of Europe in European Law and Economic Analysis in 2019, she received a Ph.D. from the University of Heidelberg for a dissertation on the protection of confidential information in private enforcement of European Competition Law in 2020.

During her doctoral studies, she worked as a Research Assistant at the Chair for Civil Law, Corporate and Commercial Law, European Law and Comparative Law of Professor Müller-Graff at the University of Heidelberg. In 2019, she commenced her work as a lawyer in the competition law department of a major international law form in Brussels before joining the Max Planck Institute Luxembourg for International, European and Regulatory Procedural Law as a Senior Research Fellow in the Department of European and Comparative Procedural Law in 2020. She has taught at the National University of Kyiv-Mohyla Academy, the University of Trier, the University of Applied Sciences for the Administration of Justice of North Rhine-Westphalia and the Justice Academy of North Rhine-Westphalia. She is currently pursuing her postdoctoral studies (Habilitation) at the University of Heidelberg under the supervision of Professor Burkhard Hess. In 2022, she was appointed as Tenure Track Professor for European Law at the University of Vienna. Her research interests focus on European, Economic, Private, Procedural and Comparative Law.

Current Publications

  • Kartellrechtliche Kollekivklagen nach dem Verbandsklagenrichtlinienumsetzungsgesetz: (K)ein Meilenstein?, in: NZKart 2024, p. 2 – 9
  • Aktuelle EuGH-Rechtsprechung zum Kartellschadensersatzrecht – Anmerkungen zu den Rs. RegioJet, Tráficos Manuel Ferrer und Repsol, in: GPR 2023, p. 226 – 235 (with Nils Imgarten)
  • Zum immateriellen Schadenersatz nach Art. 82 DSGVO und mehr – Zugleich eine Anmerkung zum Urteil des EuGH in Österreichische Post II, in: VbR 2023, p. 120 – 123 
  • The Role of Third Parties in the Enforcement of the Foreign Subsidies Regulation: Complaints, Participation, Judicial Review, and Private Enforcement in: Competition Law & Policy Debate 2023, available here
  • Commenting on Art. 19 – 26 Foreign Subsidy Regulation (Regulation (EU) 2022/2560 of the European Parliament and of the Council of 14 December 2022 on foreign subsidies distorting the internal market, Chapter 3 – Concentrations) in: Krenzler/Herrmann/Niestedt (Eds.), EU-Außenwirtschafts- und Zollrecht, 21 ed. (C.H. Beck, 2023), available here
  • The EU Foreign Subsidy Regulation – Why, What and How? in: Pohl/Warchol/Papadopoulos/Wiesenthal (Hrsg.), The Investment Weapon: Collected Papers on the Law and Geoeconomics of Foreign Capital, Volume II (Springer Studies in Law & Geoeconomics, 2023), online pre publication available here
  • Protecting the Internal Market from Subsidisation with the EU State Aid Regime and the Foreign Subsidies Regulation: Two Sides of the Same Coin? in: JECLAP 14 (2023), p. 137 – 151, available here

Forthcoming publications

  • Collective Actions for Competition Law Violations and DMA Infringements Following the Transposition of the Representative Action Directive in Germany, JECLAP 2024
  • Collective Actions and the Digital Markets Act: A Bird Without Wings (with Alba Ribera Martinez), preprint available here
  • Public Compensation for Private Harm: Fair Funds for Consumer Competition Law Redress in: World Competition 2024, preprint available here
  • Vorrang des Unionsrechts: Mehr als ein Anwendungsvorrang? in: Beiheft EuR 2024
  • (Miss-)Achtung des Fremden? – Extraterritoriale Drittstaatenregelungen, EU-Blocking-Statuten und deren Auswirkungen im Privatrecht in: Engel et al (Eds.), Die Achtung des Fremden (IPR-Nachwuchstagung) (Mohr Siebeck, 2023/2024)
  • The Extraterritorial Application of Statutes and Regulations in EU Law in: Buxbaum (Ed.), Extraterritoriality of Statutes and Regulations (IACL Congress Report) (Intersentia, 2023/2024), draft available here
  • Commenting on Art. 5 DMA in: Jaeger/Kokott/Pohlmann/Schroeder/Seeliger (Eds.), Frankfurter Kommentar zum Kartellrecht (2024, with Björn Christian Becker)
  • Commenting on Art. 48, 49 DMA in: Jaeger/Kokott/Pohlmann/Schroeder/Seeliger (Eds.), Frankfurter Kommentar zum Kartellrecht (2024)
  • Commenting on Art. 81 TFEU in: von der Groeben/Schwarze/Hatje/Terhechte (Eds.), Europäisches Unionsrecht, 8. Edition (Nomos, 2024)

 A full list of publications can be found here.


  • Collective Consumer Redress after the EU Representative Actions Directive: the way forward, University of Chile, Santiago, Chile, 12/2023
  • Current developments in private enforcement of EU competition law – (nearly) 10 years of the Damages Directive and more, University of Chile, Santiago, Chile, 12/2023
  • How to protect confidential information in civil procedure – a view from EU competition litigation, University of Chile, Santiago, Chile, 12/2023
  • Disclosure/Discovery in EU civil procedure law – towards a general principle?, University of Chile, Santiago, Chile, 12/2023
  • Collective Actions and the Digital Markets Act: A Bird Without Wings, Conference ‘Effective DMA Enforcement between Opportunities and Challenges’, Article 19, Brussels, Belgium, 11/2023

A full list of presentations can be found here.


Information on the written European law examinations „FÜM I – europarechtlicher Teil“ here and „MP Introduction to International Law (IREWI) - European Law“ here.

As of autumn 2023, the European law part of the „MP Introduction to International Law (IREWI) - European Law“ will be held and examined in English. With regard to the examination material and the delimitation of material, the duration of 60 minutes, the type as a presence examination and the permitted aids as well as their markings, there are no changes

Ass-Prof. Dr. Lena Hornkohl offers an exam preparation exercise in summer semester 2024 (here).

Please note that Ass-Prof. Dr. Lena Hornkohl cannot offer any individual study tips or answer questions on the content of the exams via email. Consider to attend one of the exercises.

General information on the oral European law examinations can be found here. Information on the oral European Law examinations with Ass-Prof. Dr. Lena Hornkohl can be found here