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Marieke van Hooijdonk

Marieke is a partner with Allen & Overy specialising in international arbitration. She heads the Litigation Department of Allen & Overy in Amsterdam and is on the steering committee of the Firm's Global Arbitration Practice.


Marieke van Hooijdonk is a renowned international arbitration counsel who also represents clients in litigation, typically handling corporate and commercial disputes involving joint ventures, mergers and acquisitions and trade matters. Recent experience includes (i) an ICC arbitration on an off shore pipe line project with claims in excess of EUR 1.3 billion; (ii) successfully representing an Irish distribution company in an ICC arbitration against an international pharmaceutical company (iii) successfully representing the Netherlands Arbitration Institute (NAI) and three arbitrators in litigation regarding the challenge of arbitrators, (iv) successfully representing a listed global science-based company in two post M&A NAI arbitrations and (v) successfully representing the ICC in litigation surrounding the appointment of an expert.

Marieke sits as the Dutch member on the ICC International Court of Arbitration in Paris. She regularly sits as arbitrator herself, as chair, sole and co-arbitrator. Since 2010, Marieke is also a deputy judge at the Court of Appeal in Arnhem-Leeuwarden.

Marieke regularly speaks and writes on arbitration related issues. The 2nd edition of her book Litigation in the Netherlands, Civil Procedure, Arbitration and Administrative Litigation was published with Kluwer.

She is praised by clients for being: "highly experienced and very smart lawyer who combines strategic and pragmatic excellence." (Chambers Global 2019). "very smart and a quick, strategic thinker. She is extremely tough, very persuasive and commercial when needed." (Chambers Global 2019, 2018). "knowledgeable, pragmatic and straightforward. She presents a realistic summary of the case without hiding any difficulties." (Chambers Europe, 2017). "very friendly but also very persistent and thorough, sticking to the point and not giving up before she has the right answer." (Chambers Europe, 2016). “She is one of the new stars at the firm. Her approach to clients is excellent.” (Chambers Europe, 2015). “Very precise and thorough” (Chambers Global, Netherlands – Dispute Resolution 2014). "The ‘very bright, analytical and down-to-earth’ Marieke van Hooijdonk combines a busy litigation and arbitration practice with her role as a deputy judge at the Court of Appeal in Arnhem". 'She knows both sides of the table, so she can advise on how an argument will stand'. (Chambers Global, 2013).

"Very creative, highly experienced" "a sharp analytical mind" (Legal 500, 2018). "'Number one in the field of litigation', Allen & Overy impresses with its 'client-oriented approach' and 'around-the-clock availability'". "Marieke van Hooijdonk attracts high praise". (Legal 500, 2017).