
Accolades
Testimonials
Collated independently by Legal 500 research team.
‘Impact Advocaten has established a unique and solid practice of assisting nonprofit associations with solid and pragmatic advice in governance and strategy. ’
‘Marleen Denef is not only a top legal expert for assisting nonprofit associations, she also has an empathic, forward-thinking and hands-on approach that makes her stand out from any of her many peers I have ever worked with. Xenne Vermeir is intelligent and creative in providing governance solutions and legal advice.’
‘Very personal approach. Very good knowledge of our sector.’
‘Friendly and attentive. Correct budgeting. Knowledgeable. Clear communication. ’
‘Impact Lawyers is one of the most specialized firms in the field of social profit and good governance. ’
‘We have worked with Marleen Denef several times over the past few years. Marleen combines excellent knowledge with a big heart for the healthcare and welfare sector.’
Key clients
- The Organisation for Economic Co-operation and Development (OECD)
- Association of Issuing Bodies (AIB)
Lawyers
Hall of Fame
The lawyers at the very top of the profession, widely known and respected by peers and clients for their longstanding involvement in market-leading work.

Leading partners
The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.
Leading associates
Leading associates with regular involvement in their team's key work, and recognition from peers or clients as being ones to watch.
Practice head
Marleen Denef; Coralie Mattelaer; Benoit Spitaels
Other key lawyers
Xanne Holvoet