Corporate/Commercial Litigation: Elite
France
1 year ranked
LAWYER PROFILE
Marguerite Aynès
France 2026
Ranked in 1 practice area
About
Provided by Grandjean Avocats
France
Practice Areas
Marguerite Aynès is admitted to the Paris Bar (2008) and the New York Bar (2009).
She assists companies and their managers in litigation before the civil and commercial courts, as well as in domestic and international arbitration. In particular, she is involved in complex business law litigation, for French and international companies, and in serial litigation and arbitration.
Career
She represents major players in the industrial (pharmaceuticals, agribusiness, aviation, defence), finance, cryptofinance and insurance, telecommunications, construction, and sports sectors.
Before co-founding Grandjean Avocats with Thomas Lambard and Jean-Pierre Grandjean, she practiced for nearly ten years as an associate and then Counsel at Clifford Chance, this experience being preceded by two years in another international law firm.
Professional Memberships
Marguerite is a board member of Droit & Procédure (Law & Procedure Association), a member of the French Arbitration Committee of the ICC and the French Association for Arbitration (AFA), as well as the American Bar Association.
Chambers Review
Provided by Chambers
Chambers France
Corporate/Commercial Litigation: Elite - France
Band 5
Individual Editorial
Marguerite Aynès frequently assists clients with supplier disputes and product liability, and most notably acts for large pharmaceutical and food and beverage players. She also has significant experience in insurance-related litigation.
Editorial individuel
Marguerite Aynès assiste fréquemment ses clients dans le cadre de litiges fournisseurs et de responsabilité du fait des produits, et intervient notamment pour les acteurs de l’industrie pharmaceutique et de l’agroalimentaire. Elle possède également une expérience en matière de contentieux liés aux assurances.
Strengths
Provided by Chambers
I can only praise Marguerite. She knows how to personalise the contact to get to the essence of managing disputes. I can therefore only recommend her.
Corporate/Commercial Litigation: EliteChambers FranceI am very happy with the collaboration with Marguerite. She is very knowledgeable and extremely reactive. She is also easy to work with.
Corporate/Commercial Litigation: EliteChambers FranceMarguerite is incredibly technical and really stands out for that. She is a brilliant lawyer, I absolutely trust her with anything.
Corporate/Commercial Litigation: EliteChambers FranceMarguerite is an exceptional lawyer in regards to her involvement in the files, the level of service and the responsiveness.
Corporate/Commercial Litigation: EliteChambers FranceMarguerite Aynès is a hard worker. She knows the case and all the details very well.
Corporate/Commercial Litigation: EliteChambers FranceJe suis très contente de ma collaboration avec Marguerite. Elle est très compétente et extrêmement réactive. C'est un plaisir de travailler avec elle.
Corporate/Commercial Litigation: EliteChambers France
Ranked Individuals at Grandjean Avocats (3)
France
Jean-Pierre Grandjean
Corporate/Commercial Litigation: Elite
View profile Marguerite Aynès
Corporate/Commercial Litigation: Elite
View profile 
Thomas Lambard
Corporate/Commercial Litigation: Elite
View profile
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