Praised for its ‘vast experience and remarkable knowledge in international arbitration’, barristers at Essex Court Chambers remain a popular choice across the entire spectrum of international arbitrations and related proceedings, including complex enforcement and interim relief challenges at all levels of the English courts. Graham Dunning KC led Lucas Bastin KC, Peter Webster, and Katherine Ratcliffe in the Czech Republic v Diag Human SE and Josef Stava proceedings, concerning challenges and appeals to a $600m arbitral award handed down in 2022 in favour of Diag Human due to a breach of a fair and equitable treatment obligation by the state. Members of the set are highly experienced in matters at the intersection between international arbitration and public international law with juniors Naomi Hart, Matthieu Gregoire and Sean Aughey appearing in complex investor-state arbitrations before a range of arbitral institutions.
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Profile
Position
Matthieu Gregoire specialises in commercial litigation, international commercial arbitration, and investor-state arbitration.
Matthieu’s clients include governments, corporations and individuals. His practice covers a wide range of sectors, including oil and gas, renewable energy, mining, manufacturing and finance. Many of his cases give rise to issues of civil fraud.
Matthieu has:
- Acted and/or advised in matters before all levels of English courts, in commercial and international disputes.
- Acted and/or advised in numerous investment treaty arbitrations, brought across many sectors and pursuant to a wide array of investment treaties, with experience of most major arbitration rules (including ICSID, SCC, UNCITRAL and ad hoc rules). Matthieu’s recent experience includes disputes under the OIC Investment Agreement and intra-EU BITs.
- Acted and/or advised in numerous commercial arbitrations, with experience of most major arbitration rules (ICC, LCIA, SCC, UNCITRAL), across a broad range of sectors and industries, and covering a variety of foreign laws as the applicable law.
- Advised States, non-governmental organisations, private commercial entities and private individuals on a diversity of commercial, arbitration and public international law issues, including treaty interpretation, WTO/Trade law, and implications of Brexit. Matthieu was appointed to the Attorney General’s Public International Law C Panel of Counsel in 2017.
Career
2017: Appointed to the Attorney General’s C PIL Panel
2015-onwards: Adjunct Professor of International Commercial Arbitration, Pepperdine University, London
2013: Call in England & Wales
2011-2012: Associate, International Arbitration and Public International Law, Cleary Gottlieb Steen & Hamilton (Paris)
2011: Call in New York
Education
2010: LLM, Georgetown University, D.C.
2010: Masters in Intentional Political Economics, Sciences Po, Paris
2008: BA in Law, Jesus College, University of Cambridge
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Testimonials
Collated independently by Legal 500 research team.
- 'Clerks are personable and user friendly.'
- 'Widely regarded as one of the premier sets in this field. They have extensive experience to some of the most complex and high-stakes international disputes.'
- 'Essex Court Chambers is the leading set for excellent advocates, particularly in public international law and international arbitration.'
- 'Market leading set. Go to chambers for most critical client matters.'
- 'Essex Court is our first port of call for arbitration-related court litigation. This is because they are very good lawyers, they have good commercial sense, they are team players and they have a service culture.'
- 'Essex Court Chambers has vast experience and remarkable knowledge in international arbitration.'
- 'Essex Court Chambers is the leading set for excellent advocates, particularly in public international law and international arbitration.'
- 'Excellent depth of bench and expertise. The standout arbitration specialist set.'