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
Clients have praised the Brussels Public & Regulatory practice group for their availability, strategic insight, and pragmatic, client-focused approach, sharing feedback such as:
- “Stand out for their availability and pro-activeness. Moreover, they do not take legal action until they have clearly explained everything and their advice on what steps to take is much appreciated. The advice and their decisions are detailed and filed within the predetermined time frame”
The Legal 500, 2025 - Environment - "The team is impressively reactive and flexible when pressure is on with tight deadlines and concrete answers needed. They are available and precise in their advice. They also adjust to the specific needs to the industry of their customers."
The Legal 500, 2024 - Environment - “NautaDutilh has always shown a clear helicopter view, as well as an understanding of the smallest details in complex cases.”
Chambers, 2025 – Public Law
- “Stand out for their availability and pro-activeness. Moreover, they do not take legal action until they have clearly explained everything and their advice on what steps to take is much appreciated. The advice and their decisions are detailed and filed within the predetermined time frame”
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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.