Competition: Domestic
Belgium
2 years ranked
LAWYER PROFILE
Tone Oeyen
Europe 2026
Ranked in 2 practice areas
About
Provided by Freshfields
Europe
Practice Areas
Tone specialises in European and Belgian competition law, with a particular focus on cross-border merger control and cartel enforcement.
He also advises on abuse of dominance and state aid, as well as on general EU and international trade law and trade defence measures.
Tone has significant experience of complex merger proceedings before the European Commission and other global authorities, which often include the negotiation of remedies.
His conduct practice covers anti-competitive behaviour in all areas, including issues raised by digital transformation, and he has successfully defended clients in cartel and state aid-related litigation before the Belgian and European courts.
Tone speaks Dutch, English, French, Spanish and German.
Chambers Review
Provided by Chambers
Chambers European Guide
Competition: Domestic - Belgium
Band 4
Individual Editorial
Tone Oeyen caters to a client base of well-known multinationals and receives recognition for his handling of EU merger control mandates. He also has experience in antitrust investigations and appeals against Commission decisions, particularly in the technology sector. He has further expertise in merger notifications and behavioural investigations before the Belgian Competition Authority, as well as handling a number of FDI filings.
Competition: EU - Belgium
Band 5
Individual Editorial
Tone Oeyen caters to a client base of well-known multinationals and receives recognition for his handling of EU merger control mandates. He also has experience in antitrust investigations and appeals against Commission decisions, particularly in the technology sector. He has further expertise in merger notifications and behavioural investigations before the Belgian Competition Authority, as well as handling a number of FDI filings.
Strengths
Provided by Chambers
Tone Oeyen is a very good lawyer who is super reactive and has a good team working with him.
Competition: DomesticChambers European GuideTone Oeyen is a trusted advisor in competition law. He has great judgement and a very strong understanding of competition law. He is also willing to learn the complexities of his clients' business.
Competition: DomesticChambers European GuideTone Oeyen is a great lawyer who allies clarity to complexity.
Competition: DomesticChambers European GuideTone Oeyen is a great lawyer who brings clarity to complexity.
Competition: DomesticChambers European Guide
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