Member Roster

Dr. Ariane de Guillenchmidt Guignot currently rules the Law Firm she founded (www.avocat-agg.fr) in 2011. She works on Family law cases, both French and International, and on files involving patrimony and privacy law. She also deals with cases in criminal law and litigation. Ariane is trained in collaborative law, completed a Certificate in Negotiation at Harvard Law School and is fluent in English.

Ariane has also been teaching French civil law at University for 25 years. She currently teaches “Contract Drafting and Negotiation” and “Proceeding contracts” at the Law University of Paris Saclay. She trains students in Master 2 (Bac + 5 years). She also publishes columns and articles in legal reviews on Family and patrimony law, both in French and English. She writes an annual column on the decisions rendered by courts and tribunals in France and in Europe on International Family law in the Revue de droit de la famille (LexisNexis ed.).

At last, Ariane is the former vice-president of the French Doctors in Law Association (Association De Promotion Du Doctorat | Afdd), a member of the Board of the Paris Saclay School of PhD and a member of the International Academy of Estate and Trust Law, of the International Bar Association (IBA) and a member of the board of the Franco-British Lawyers Society (FBLS). At last, Ariane is a regular speaker in International Law conferences.

RESUME :
Before her current professional activities, Ariane de GUILLENCHMIDT – GUIGNOT, after graduating from Sciences Po (public administration section) worked for a rating agency in London (UK) in 2000. Back to France, she became a lawyer at the Paris Bar in 2003. Meanwhile, she started teaching commercial and civil law at the Paris university. She supported a PhD in 2007 in Contract law, with the honors of the unanimous jury at the University of Paris II – Panthéon Assas. While working on her PhD, Ariane was a Temporary Education and Research Attaché (Temporary lecturer) at the University of Paris II – Panthéon – Assas. Then she worked as a law clerk for the President of the French Supreme Court in Private Law (Cour de cassation). In 2008, Ariane went back to the Paris Bar, as a trainee for Lawyers before the “Conseil d’Etat” and the “Cour de cassation” (French Supreme courts) where she dealt with Family law cases and litigation. In December 2010, she started her own law firm specialized in dispute and advice concerning family affairs, privacy, patrimony and Law of individuals. In 2018, Ariane became a partner at the French Law Firm Fidal dealing with Family law cases, both French and international. In 2021, she became partner at Bornhauser Law Firm and recreated her own law firm in 2022. While being a French Lawyer, Ariane always taught civil and commercial law at Paris University.