Mathijs Van Haver
Expertise
He advises and litigates on a wide range of issues, with a particular emphasis on environmental law, spatial planning law, public procurement law and energy law. He represents major project developers, network operators, various industrial businesses and (semi-)governmental bodies, among others. Mathijs has gained considerable litigation experience before the Council of State, civil courts and the Constitutional Court.
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Work highlights
Mathijs was recently involved in:
- Advising a major infrastructure developer on several energy related questions (including on the EU emission trading system (EU ETS))
- Assisting Engie Electrabel by, among others:
- advising on the 10-year extension of Doel 4 and Tihange 3
- seconded to the Flexible Generation team
- Assisting Fedasil in public procurement files as well as (regulatory and urban planning) disputes
- Advising Ghelamco in a complex dispute relating to the Eurostadium project
Additionally, Mathijs has provided regulatory support for, among others, the following transactions:
- Advising Colruyt Group on the acquisition of Delitraiteur (2025) and its acquisition of 57 Match and Smatch stores (2023)
- Assisting Lineage in the acquisition of Luik Natie (2024)
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What others say
Mathijs is recognised by The Legal 500 (2026) as a 'key lawyer' for his work across the broad field of environmental law.
In addition, clients have praised the Brussels Public & Regulatory practice for its availability, strategic insight and pragmatic, client‑focused approach, with feedback including:
“NautaDutilh's environmental practice is top‑notch, and we are happy to have worked together with them.” – The Legal 500 (2026) – Environment
“NautaDutilh employs a team of lawyers at the very top of the sector of energy and corporate law.” – The Legal 500 (2026) – Energy
“NautaDutilh's ability to navigate through complex legal aspects of the matters is more than impressive.” – Chambers (2026) – Public Law
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Ancillary functions
Besides his work as a lawyer, Mathijs remains committed to several non-profit organisations.
From 2020 to 2022, Mathijs served as a board member in the Belgian Leadership Project (BLP), where he contributed to relaunching the programme. Additionally, Mathijs serves as a member on the Board of Advisors of the Model European Parliament (MEP) Limburg Foundation since 2019.
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Qualifications
Mathijs obtained a LL.M. in European Economic Law at the Europa-Institute in 2021, having previously completed a Master of Laws from KU Leuven in 2020.
Mathijs was admitted to the Brussels Bar in 2021 and joined NautaDutilh that same year.