Areas of Practice
  • English
  • French
  • Dutch
  • Spanish
  • Universiteit Gent, Master in European Law, magna cum laude, 2009
  • Université Catholique de Louvain and Universidad Complutense de Madrid, Master in Laws, magna cum laude, 2008
  • Facultés Universitaires “Saint-Louis,” Bachelor in Laws, cum laude, 2005
Bar & Court Admissions
  • Brussels Bar

Eléonore Mullier

Senior Associate
Avenue Louise 489
B-1050 Brussels
TEL: +32 2 626 0563
FAX: +32 2 626 0510

Eléonore Mullier is a Belgian qualified lawyer in the Environment & Life Sciences Group of Steptoe’s Brussels office.  She specializes in EU regulatory law and litigation. Ms. Mullier advises clients on regulatory compliance, product defense, and litigation strategies in the field of environmental law, as well as related support on contracts and negotiations.  She has significant experience in the areas of chemical and product regulations (REACH, biocides, PIC, POPs, RoHS, etc.), access to environmental information, and market barriers.  In the REACH area, she advises on authorization, dossier and substance evaluation, intermediates, restrictions, and emerging issues, including nanotechnology and endocrine disruptors, and helps companies prepare for enforcement inspections. 

Ms. Mullier represents clients before the European Court of Justice and the ECHA Board of Appeal and before both national and EU regulatory authorities (the European Chemicals Agency, the European Commission, and national enforcement authorities). She also assists clients in data sharing negotiations and related disputes and litigation.

Prior to joining Steptoe, Ms. Mullier worked for another international law firm in Brussels, where she also advised on Belgian and EU regulatory issues concerning soil contamination, urban planning, renewable energy, and health and safety.


  • Legal 500 EMEA, EU Regulatory: Chemicals (REACH) 2016

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Professional Affiliations

  • Chair of AmCham Belgium's Young Professionals Committee