As Managing Partner, Marnix makes up the Management Board, together with Anja Mutsaers (Practice Partner) and Dorothee van Vredenburch (Executive Partner).
Prior to taking up leadership of the firm in January 2020, Marnix was head of the firm’s Arbitration practice. He has specialised in international arbitration for over 23 years and acted as trusted adviser to clients for all their arbitration and litigation needs, across the globe.
Marnix has been a member of the ICC International Court of Arbitration since 2006, and has been Vice-President of the ICC Court since 2015. He is also co-chair of the ICC Commission’s Task Force on Emergency Arbitration. He is an active member of the ICC’s Institute of World Business Law, the ICC’s Commission on Arbitration, ICCA and of the IBA Arbitration Committee.
De Brauw secures lifting of EUR 22 billion asset freeze for the National Bank of Kazakhstan
Dispute Albert Heijn and 250 franchisees about benefit sharing under franchise contracts
GasTerra wins EUR 2 billion price review arbitration against Italian energy major Eni
De Brauw advises and represents NAM (Shell/Exxon) in events surrounding earthquakes
Ahold reaches agreement in principle to settle Waterbury class action in the United States
China Huaneng Group acquires 50% in InterGen from GMR Infrastructure
18 October 2019
1 July 2019
10 October 2018
18 June 2018
Marnix Leijten featured in Who’s Who Legal: Thought Leaders – Arbitration Review
22 December 2017
Marnix Leijten and Albert Marsman listed in Who’s Who Legal Arbitration 2018
10 March 2017
De Brauw arbitration practice recognised in 10th edition GAR 100
13 July 2016
Energy law in brief – new case law, regulation and articles – July 2016
15 June 2016
Energy law in brief – new case law, regulation and articles – May / June 2016
13 April 2016
Energy law in brief – new case law, regulation and articles – February / March 2016
12 April 2016
De Brauw participates in 4th ICC MENA Conference on International Arbitration in Dubai
5 April 2016
Marnix Leijten to speak at the ICC Institute Masterclass for Arbitrators in Costa Rica
12 February 2016
Global Arbitration Review: Dutch lawyers face off over Yukos
9 December 2015
Energy law in brief – new case law, regulation and articles – November 2015
1 December 2015
Marnix Leijten and Matthias Kuscher write chapter ‘International Arbitration Under Review’
11 November 2015
Energy law in brief – new case law, regulation and articles – October 2015
13 October 2015
Energy law in brief – new case law, regulation and articles – September 2015
4 August 2015
Marnix Leijten and Samuel Vermeulen in Chambers International Arbitration Guide 2016
8 July 2015
Energy law in brief – new case law, regulation and articles – July 2015
10 June 2015
Energy law in brief – new case law, regulation and articles – June 2015
10 June 2015
Marnix Leijten appointed Vice President ICC International Court of Arbitration
13 April 2015
11 March 2015
Energy law in brief – new case law, regulation and articles – February 2015
9 February 2015
Energy law in brief – new case law, regulation and articles – January 2015
14 January 2015
Energy law in brief – new case law, regulation and articles – December 2014
8 December 2014
Energy law in brief – new case law, regulation and articles – November 2014
11 November 2014
Energy law in brief – new case law, regulation and articles – October 2014
10 November 2014
New Arbitration Act to further boost the Netherlands’ competitive position as arbitration venue
10 September 2014
LCIA trailblazer with introduction of new ethical code of conduct in 2014 Arbitration Rules
10 July 2014
Energy law in brief – new case law, regulation and articles – June 2014
17 March 2014
Marnix Leijten and Martje Verhoeven contributed to Handbook Gas Price Arbitration
14 January 2014
13 January 2014
Adoption of IBA Guidelines on Party Representation in arbitration agreements
20 December 2013
6 December 2013
22 November 2013
8 November 2013
25 October 2013
11 October 2013
10 October 2013
27 September 2013
13 September 2013
30 August 2013
16 August 2013
2 August 2013
De Brauw Blackstone Westbroek
Claude Debussylaan 80
1082 MD Amsterdam
The Netherlands
P.O. Box 75084
1070 AB Amsterdam
The Netherlands