Biography
Prior to joining Weil, Ms. de Fays was an associate with an international law firm, and was based in both Brussels and New York. She represented companies before the U.S. antitrust agencies, as well as advised clients in cartel and abuse of dominance matters before the European Commission and national competition authorities. Ms. de Fays also worked as a contractor for the United Nations Conference on Trade and Development and interned at the European Commission – DG Competition and the Austrian Competition Authority.
Ms. de Fays was a Harlan Fisk Stone Scholar at Columbia Law School where she received an LL.M. degree. Prior to attending Columbia Law School, Ms. de Fays graduated magna cum laude from the College of Europe in Belgium where she received an LL.M. degree in European Legal Studies. She also earned a Master in Law with a specialization in European Law from Université Catholique de Louvain and her Bachelor’s Degree from Facultés Universitaires Notre-Dame de la Paix.
Ms. de Fays has an extensive pro bono practice and is admitted to the New York State Bar. She is also an appointed member of the Antitrust & Trade Committee of the NYC Bar.
Awards and Recognition, Speaking Engagements, Guides and Resources, Latest Thinking, Firm News & Announcements
Latest Thinking
- Blockchain Collaborations: Analyzing the Potential Antitrust Implications Publication — Competition Law Insight — By Marie-Marie O. de Fays — May 13, 2020
- Predicting Competition in Digital Markets Publication — IFLR — By Marie-Marie O. de Fays — December 05, 2019
- UNCTAD Peer Review Mechanism for Competition Law: 10 Years of Existence Publication — New York & Geneva — By Marie-Marie O. de Fays — PDF — 2015
Firm News & Announcements
- Weil Advises American Securities in its Pending Acquisition of Beacon’s Interior Products Business Deal Brief — December 21, 2020
- Weil and Innocence Project Secure Release for Incarcerated Man Exonerated by DNA Evidence Firm Announcement — November 09, 2020