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Margrit Trein, Senior Associate

Margrit Trein

Senior Associate

Practice areas

  • Energy and infrastructure
  • International arbitration
  • Litigation and dispute management

Practice notes

Margrit is a senior associate in our International Arbitration and Dispute Resolution Group. Her practice focuses on international commercial and investment arbitration, public international law, and arbitration-related English court proceedings. She has represented clients on complex, high profile and multi-jurisdictional matters under all major arbitral rules across a range of sectors including the energy, construction, infrastructure, consumer and telecoms sectors. She is based in London, having also spent six months with the International Arbitration and Public International Law team in Paris. She is qualified to practice in England and Wales.

In respect of international law matters, Margrit has advised both States and investors in disputes arising under various bilateral and multilateral investment treaties. Margrit has extensive experience representing clients in commercial arbitrations, especially in the consumer and energy sectors. In recent years, she has acted for various State-owned companies in high value disputes concerning oil and gas projects. She also has experience advising on complex quantum issues. Margrit is an active member of the firm’s LatAm Group.

Margrit regularly publishes and gives training on issues pertaining to international arbitration and has a strong interest in public international law. During her LL.M. at Leiden University, Margrit was a research assistant to Professor Dr. Eric De Brabandere and to Assistant Professor Dr. Cecily Rose, providing research and editorial support on a range of projects relating to international dispute settlement, investment arbitration, human rights (with a particular focus on the Inter-American system) and corruption. She also coached the Leiden University team in the Telders International Law Moot Court Competition.

Margrit holds a B.A. degree in Politics and Spanish and an M.A. degree in International Relations, both from the University of Exeter; an LL.B. from the College of Law (now the University of Law); and an LL.M. in Public International Law from Leiden University (cum laude). Prior to joining the firm, she also completed a short course in International Commercial Litigation and Arbitration at the London School of Economics.

Margrit has triple nationality (British/German/Argentinian) and is fluent in English, German and Spanish. She also speaks intermediate French and basic Italian.