Peter L’Ecluse - Van Bael & Bellis

Peter L’Ecluse

Listed in Best Lawyers since 2016
Phone: 32 2 647 7350

Peter L’Ecluse is a partner in the Brussels office. His practice focuses on life sciences, competition law and intellectual property rights.

Life Sciences

In the field of life sciences, Peter’s expertise encompasses a wide range of areas, including registration, pricing and reimbursement matters, advertising issues and all aspects of competition law. He has successfully represented clients before civil courts as well as Belgium’s administrative court, the Council of State, in challenging reimbursement decisions and rules imposing prescription requirements on physicians.   

Competition Law

In the field of competition law, Peter has been involved in most of the significant cases arising before the Belgian competition authorities. His expertise in this area extends to merger control, dominant market positions and procedural issues.

IP Rights

In the field of intellectual property, Peter’s patent litigation practice focuses on the life sciences industry. For several years, he has acted as co-counsel for one of the largest pharmaceutical companies in the world, handling multi-jurisdictional patent litigation while defending valuable patents covering various active substances against generic competitors. Peter also acted as co-counsel in proceedings before the European Patent Office and the Belgian courts for a major medical devices firm in patent litigation which covered three jurisdictions. He often advises on supplementary protection certificate patent extension issues and assists clients in dealing with counterfeit trade in pharmaceuticals.

He regularly lectures and writes on matters involving life sciences, competition law and intellectual property rights.

Peter L’Ecluse speaks English, Dutch and French.


  • Chambers Europe – Competition: Domestic
  • Chambers Europe for Intellectual Property
  • Chambers Europe – ‘Leaders In Their Field’ (Competition: Domestic)
  • Chambers Europe – ‘Leaders In Their Field’ (Intellectual Property)
  • IAM Patent 1000 – The World’s Leading Patent Practitioners
  • Managing Intellectual Property – IP Star
  • LMG Life Sciences (Europe) – Life Sciences Star
  • PLC for Belgium Life Sciences – Regulatory
  • PLC for Belgium Life Sciences – Intellectual Property
  • PLC for Europe Life Sciences – Competition/Anti-trust
  • PLC for Belgian Competition Law/Anti-trust
  • PLC for Belgium Dispute Resolution
  • International Who’s Who Legal for Life Sciences
  • Legal 500 for Intellectual Property
  • Legal 500 for Dispute Resolution
  • Legal 500 for EU Regulatory: Pharma and Biotech
  • European Legal Experts for Intellectual Property


The George Washington University, Washington D.C., USA – Master’s Degree in Comparative Law, 1987

Katholieke Universiteit Leuven (KUL), Belgium – Law Degree, 1986

Katholieke Universiteit Leuven (KUL), Belgium – Philosophy Degree, 1985


Peter L’Ecluse has written extensively on issues involving life sciences and competition law. He is a contributor to Van Bael & Bellis' “Business Law Guide to Belgium” (Kluwer Law International/Bruylant, 2003) as well as “Private Antitrust Litigation” (European Lawyer Reference/Thomson Reuters, 2013).  He is also a contributor to Van Bael & Bellis’ leading treatise “Competition Law of the European Community” (fifth edition, Kluwer, 2010), a standard work of reference in the field of EU competition law. 

Office Location

Glaverbel Building
Chaussée de La Hulpe 166 Terhulpsesteenweg
Brussels, B-1170

Practice Areas

Competition / Antitrust Law