LAWYER PROFILE

Ning-Ly Seng

France 2026

Weil, Gotshal & Manges LLP

Ranked in 1 practice area

Competition/European Law

France

4 years ranked

About

Provided by Weil, Gotshal & Manges LLP

France

Practice Areas

Ning-Ly is recognized for her expertise in French and European competition law (merger control, state aid, antitrust and distribution litigation). She is involved in major merger matters, advising clients in national and international mergers and acquisitions, in particular in the energy, aeronautical, health, transportation, medias, and agri-food sectors, as well as in their strategic partnership projects.

Recent work includes advising Bolloré on the sale of the Bolloré Logistics to CMA CGM and Bolloré Africa Logistics to MSC; Vivendi on its takeover acquisition of Lagardère (Phase II with remedies), Veolia on its (initially hostile) takeover bid over Suez (Phase I with remedies); LVMH on a strategic acquisition in the luxury sector; Fijace in the acquisition of control of Maxi Toys (Phase I with remedies) and joint control with Prenatal Retail Group over New MT (referred by the Commission to the FCA and finally cleared by the FCA). Ning-Ly is also involved in several strategic partnerships in the TMT sector and numerous follow-on actions before French Courts.

Career

Ning-Ly joined Peltier Juvigny Marpeau & Associés end of 2016 and became Partner in 2018. She started her career at Bredin Prat (Paris and Bruxelles) where she was promoted Counsel. She was also seconded at Cravath, Swaine & Moore (New York, 2010).

Professional Memberships

Member of the APDC (association of lawyers specialized in competition law), AFEC (Association Française d’Etude de la Concurrence), ABA Antitrust Section, IBA and AIJA (International Association of Young Lawyers).

Personal

Ning-Ly is strongly involved in various programs to promote diversity as a member of the Club 21, of which she was member of the bureau. She supports women entrepreneurs to join HEC Incubateur in partnership with Station F (one of the most prestigious business incubators in the world). She participates to several mentoring program, such as Revel@Her (promoting women from diverse background) or the mentoring program of W@CompetitionFR.

Chambers Review

Provided by Chambers

Chambers France

Competition/European Law - France

Band 5

Individual Editorial

Ning-Ly Seng is frequently before French and international competition authorities assisting clients with merger clearance mandates and gun-jumping allegations, as well as representing clients in behavioural investigations and follow-on damages claims. She counts large French corporates from the retail and transport sectors among her clients. She joined Weil, Gotshal & Manges in January 2026.

Editorial individuel

Ning-Ly Seng intervient fréquemment devant les autorités de concurrence françaises et internationales pour assister des clients dans de mandats d’autorisation de concentrations, ainsi que dans des enquêtes comportementales et de réclamations de dommages. Elle compte parmi ses clients de grandes entreprises françaises des secteurs de la distribution et du transport. Elle a rejoint Weil, Gotschal & Manges en Janvier 2026.

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Strengths

Provided by Chambers

She is a super lawyer, who is very business-oriented and versatile.
Competition/European LawChambers France
She is an excellent professional who fully understands her client's business challenges and adapts to her audience.
Competition/European LawChambers France
Ning-Ly Seng is very proactive, effective and can approach cases well with solutions to propose.
Competition/European LawChambers France
Ning-Ly Seng has excellent expertise in competition law, it's a real pleasure to work with her. She's very pragmatic and educational. She's a true partner you can rely on.
Competition/European LawChambers France
We have been working with Ning-Ly Seng for many years and are very satisfied with her commitment to us, her expertise and her dynamism. She is a great professional recognised by all.
Competition/European LawChambers France
Ning-Ly Seng possède une excellente expertise en droit de la concurrence ; c’est un réel plaisir de travailler avec elle. Elle est très pragmatique et pédagogue. C’est une véritable partenaire sur laquelle on peut compter.
Competition/European LawChambers France