Lukas Rass-MassonProfessor of Law, Toulouse

Teaching

Private international law, European law, and comparative law, taught across all levels and in three languages (French, English, German).

Programmes

I co-direct, with Professor Pierre Egéa, the Master in Comparative and International Law (MADIC) since 2020, which trains students for practice and research in international and comparative law.

My teaching feeds directly into the Cours de droit international et européen (co-authored, 7th edition 2025, revised each year since 2019), a reference for the French competitive examinations: keeping the course current forces a yearly reckoning with the state of the field.

I also direct the University Diploma (DU) in Arbitration (since 2025).

Doctoral supervision

In progress

Completed

Prospective doctoral candidates

I welcome enquiries from candidates wishing to pursue doctoral research in private international law, European private law, or the law of cyberspace and space. International cotutelle (jointly supervised) projects are especially welcome.

The profile I look for:

To enquire, please send a short research proposal, a CV, and your Master's thesis (or a representative writing sample) via the contact page.

Courses

My teaching centres on private international law and European law, reaching into comparative law, international business and dispute resolution, and the law of emerging domains. I teach across all levels and in three languages: French, English, and German. In 2026–2027 I am on research leave (sabbatical) and not teaching.

Master. General theory of private international law, EU private international law, comparative private international law, the international protection of the person, general principles of private international law, private international law (LLM), fundamental private international law, aviation law, international transport and logistics contracts, fundamental international business law, and the European single market. These courses are delivered across the Master in Comparative and International Law (MADIC), the Master Droit privé fondamental, the Master Droit des transports aériens, the LLM in International and European Law, and the LLM in International Aviation Law, as well as the double-degree programme with Jersey.

Bachelor (Licence). Introduction to private law (in French), German private law (in German), Private and public law issues (in English), and Internationales und europäisches Recht (in German).

Judicial training. A morning seminar on private international law, notably legal reasoning in family private international law, within the continuing-education programme of the École nationale de la magistrature (ENM), 2019–2021.

Course materials. A selection of my teaching presentations is openly available: Introduction au droit privé (Licence); Droit international privé (Master seminar, École de droit de Toulouse, 2026); La contribution du droit international privé multilatéral à la théorie des greffes juridiques (Master seminar, Bordeaux, 2024); and Understanding Corporate Social Responsibility in the Context of the EU (seminar with O. Macovei, Bar-Ilan University, 2022).

Invited lectures

Invited lecturer and researcher at (selection):

Former programme directions