Vonnick Le Guillou is specialized in complex international liability claims, most notably in product liability cases, and has developed a renowned expertise in the aviation industry.

Vonnick has been practicing as a lawyer since 1984. She is assisting clients on all aspects of domestic and international complex civil or criminal pre-litigations, litigations and arbitration cases, particularly in product liability law, aviation law and insurance law. Her clients are major French and international companies including insurers, aircraft manufacturers, equipment manufacturers, MROs and several industrial companies.

She regularly advises a major European aircraft manufacturer regarding air crash cases (such as Concorde, Rio-Paris, Egyptair, Air Moorea). Vonnick is an accredited CEDR mediator and a member of the Legal Advisory Committee of the Flight Safety Foundation.