,A Leading Law Firm in Competition Law
Over 40 years of legal and judicial excellence
serving businesses and institutions.

,Leading law firm in intellectual property law
Over 40 years of legal and judicial excellence
serving businesses and institutions.

,Leading Law Firm in Sports Law
Over 40 years of legal and judicial excellence
serving businesses and institutions.

,Leading Law Firm in Artificial Intelligence Law
Over 40 years of legal and judicial excellence
serving businesses and institutions.

Close to its clients, FAJGENBAUM defends, protects, and anticipates their needs.
On a daily basis, we advise individuals, companies, federations, public institutions and local authorities in creating, promoting and defending their rights. We develop tailored innovative strategies for our clients.
Our recognised expertise and experience frequently bring us before French and European courts, as well as regulatory and competition authorities.
With boldness and passion, alongside Fabienne Fajgenbaum, our partners Thibault Lachacinski, Raimbaut Lacoeuilhe and Judith Harari combine rigor, commitment and strategic vision to secure the interests of our clients and defend their rights.
Intellectual property
Protecting, promoting, and defending immaterial assets
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As a leading reference in trademark law, patent law, copyright law, design law and geographical indication law, FAJGENBAUM assists its clients in creating and securing their rights, and contributes to promoting them.
FAJGENBAUM ensures the protection of its clients’ rights both amicably and in litigation before civil, administrative, and criminal courts.
Sports law
Building and securing sport actors’ rights
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For over 40 years, FAJGENBAUM has been supporting athletes, clubs, federations, committees, and broadcasters in building and protecting their competitions, contracts, and partnerships.
Competition Law, distribution Law & regulation
Mastering the rules of the economic game
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Compliance with competition rules and distribution litigation are two activities at the very heart of FAJGENBAUM. The Firm represents its clients as plaintiffs and defendants before competition authorities and commercial courts in cases involving antitrust and restrictive practices.
The Firm supports its clients in national and international business transactions, such as mergers and acquisitions. It coordinates legal processes in France and abroad to obtain prior clearances under merger, foreign direct investment (FDI) and foreign subsidy control rules.
Artificial intelligence & new technologies
Anticipating the legal challenges of digital technology and supporting the actors of tomorrow
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FAJGENBAUM combines unique expertise and innovative capabilities to advise its clients in the necessary legal transition imposed by the AI revolution to defend their rights and interests to address technological risks and threats, and assist them with AI compliance as well as with data protection.
Our values
Excellence & expertise
Each of our clients benefits from our cutting-edge legal expertise and in-depth, cross-disciplinary knowledge of the relevant business sectors.
Commitment & determination
We defend our clients’ interests with strength and conviction. Technical expertise and strategic vision are FAJGENBAUM’s watchwords.
Agility & reactivity
To address constantly changing environments, we draw on our rich experience and design pragmatic and innovative solutions tailored to contemporary challenges.
Innovation & anticipation
We are at the forefront of many areas of law, adapting to economic and technological evolutions to understand our client’s needs and expectations, and to protect and secure their rights.
Multidisciplinary team & 360° approach
Our specialized lawyers combine their expertise to offer comprehensive, cross-disciplinary service in constant cooperation with our clients.
Discover Our Team!
Why Choose
Over 40 years of recognized experience in defending rights and regulating markets.
Representation in France and internationally, before courts and competent authorities.
Bespoke support that combines high-level technical expertise with strategic vision.
Solid references in the luxury, sports, media, food industry, local administration and new technology sectors.
