Jan Willem leads Houthoff’s Litigation and Arbitration practice groups, and is a member of the firm’s International Board.

He specialises in corporate and commercial litigation, focussing on transaction-related disputes, post-public bid litigation, shareholder disputes, Enterprise Chamber proceedings and liability claims. He represents corporates, and national and international investment companies in complex proceedings often involving multiple jurisdictions. Jan Willem led Houthoff’s litigation teams in, among other cases, the multi-billion dollar take-over dispute Elliott/AkzoNobel, Sligro’s EUR 83 million take-over dispute with Jumbo and the massive Altice litigation regarding the majority shareholder’s public bid before the Amsterdam Enterprise Chamber. He also headed the litigation team in Novamedia’s significant corporate governance dispute before the Enterprise Chamber with a minority stakeholder. Jan Willem has received Band 2 ranking from Chambers Global and Chambers Europe for his Dispute Resolution practice. Legal 500 has recognised him as a Leading Individual in the field of Commercial Litigation.

He is also part of a multidisciplinary team with experts in corporate governance, and regulatory and corporate litigation. The team conduct governance stress tests to improve and reinforce governance practices.

  • Represented Fortenova Group, the largest food producer and retailer in South-Eastern Europe with an annual turnover of EUR 5 billion and 47.500 employees, in the implementation of a comprehensive restructuring resulting from the presence of sanctioned debt and equity holders in its capital structure and cross-border litigation in connection therewith.
  • Lex Mundi Cross-Border Dispute Resolution
  • Lex Mundi Foundation Management
    Specialisation Course Corporate Structures (Grotius Academy)
  • Private Law (University of Groningen)
  • Admitted to the Bar in the Netherlands in 2002

Expertises

Corporate Litigation
Corporate disputes often strike at the heart of an organisation – whether involving shareholders, directors, governance structures or M&A-related conflicts. These matters demand not only deep legal expertise, but a sharp understanding of corporate dynamics and reputational stakes.
Litigation
Business disputes can have a major impact on your organisation's reputation, continuity and financial position. Conflicts are becoming increasingly common due to growing regulation and social pressure. Shareholder disputes, contractual conflicts, directors' liability and collective actions invariably call for a well thought-out strategy and a thorough understanding of the sector.
Dutch Caribbean
Houthoff’s Dutch Caribbean experts advise on the laws applicable in the Caribbean part of the Kingdom of the Netherlands.
Corporate Litigation
Corporate disputes often strike at the heart of an organisation – whether involving shareholders, directors, governance structures or M&A-related conflicts. These matters demand not only deep legal expertise, but a sharp understanding of corporate dynamics and reputational stakes.
Litigation
Business disputes can have a major impact on your organisation's reputation, continuity and financial position. Conflicts are becoming increasingly common due to growing regulation and social pressure. Shareholder disputes, contractual conflicts, directors' liability and collective actions invariably call for a well thought-out strategy and a thorough understanding of the sector.
Dutch Caribbean
Houthoff’s Dutch Caribbean experts advise on the laws applicable in the Caribbean part of the Kingdom of the Netherlands.

Ranked in Band 2

Chambers Global & Europe

Litigation (2025 Edition)

"Jan Willem de Groot is a very thorough and experienced litigation partner."

Chambers Global & Europe

Litigation (2025 Edition)

Leading Partner

Legal 500

Dispute Resolution: Commercial Litigation (2025 Edition)

"Jan Willem de Groot is an amazing litigator. He is great in court and possesses a sharp legal mind. Fun to work with."

Legal 500

Dispute Resolution: Commercial Litigation (2025 Edition)

"He is extremely knowledgeable, experienced, strategic in his thinking, highly regarded among peers and well respected by the courts and judges. Having his presence in the courtroom goes a long way."

Chambers Global

General Business Law - Dutch Caribbean (2025 Edition)

"His blend of sharp legal insight and genuine compassion has made our experience not just successful, but deeply supportive and understanding of our unique circumstances."

Chambers Global

General Business Law - Dutch Caribbean (2025 Edition)
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Upcoming
event

IBA Toronto Congres

IBA Toronto

2 November 2025 - 7 November 2025
Toronto

Publications

1 March 2025
1 March 2025
Civiel bewijsrecht voor de rechtspraktijk. Maklu-Uitgevers.
25 January 2021
25 January 2021
Tenuitvoerlegging dwangsombeschikking OK op basis van art. 55 Brussel I-bis. Noot bij Gerechtshof Amsterdam. Jurisprudentie Onderneming & Recht.
Governance Stress Test. Houthoff.
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