Drawing on significant experience in both law firms and in-house, Costanza advises and represents clients in competition law, economic law and European Union law. Her strategic approach is tailored to each client’s constraints and to their economic and operational stakes.<\/p>\n\n\n\n
Costanza handles competition law matters, including anticompetitive practices and merger control, at both the French and EU levels.<\/p>\n\n\n\n
She also advises on distribution law and commercial negotiations. She has significant experience drafting, negotiating and managing French and international commercial contracts, and in structuring, setting up and managing distribution networks and agreements. She regularly assists clients in civil and commercial disputes as well as in class actions. <\/p>\n\n\n\n
She also advises clients on consumer law and regulatory issues, and regularly assists companies in consumer disputes, such as those involving misleading commercial practices and comparative advertising. <\/p>\n\n\n\n
She assists clients throughout administrative investigations and inspections by the DGCCRF (French consumer protection and competition authority) concerning alleged breaches of the French Commercial Code and the French Consumer Code, as well as in appeals before the administrative courts.<\/p>\n\n\n\n
Before co-founding Orbe Avocats in September 2026 with her fellow lawyers and former colleagues Claire Lavarde and Arthur Merle-Beral, Costanza was an associate and then counsel in the Paris offices of two major law firms, one French and one American. She also served as Group Head of Litigation at a major French IT group. <\/p>\n\n\n\n
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