LAWYER PROFILE
Marguerite Aynès

Marguerite Aynès

Global 2026

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Ranked in 1 practice area

About

Provided by Grandjean Avocats

Global

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 Global Guide

Corporate/Commercial Litigation: Elite - France

Band 5
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.

Strengths

Provided by Chambers

  • Marguerite Aynès is a hard worker. She knows the case and all the details very well.

    Corporate/Commercial Litigation: EliteChambers Global Guide
  • Marguerite is an exceptional lawyer in regards to her involvement in the files, the level of service and the responsiveness.

    Corporate/Commercial Litigation: EliteChambers Global Guide
  • Marguerite is incredibly technical and really stands out for that. She is a brilliant lawyer, I absolutely trust her with anything.

    Corporate/Commercial Litigation: EliteChambers Global Guide
  • 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 Global Guide
  • I 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 Global Guide

Ranked Individuals at Grandjean Avocats (3)

France

  • Profile image of Jean-Pierre Grandjean
    Jean-Pierre Grandjean

    Corporate/Commercial Litigation: Elite

    View profile
  • Profile image of Marguerite Aynès
    Marguerite Aynès

    Corporate/Commercial Litigation: Elite

    View profile

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