Law firm in Lille

Our law firm located in Lille has 8 lawyers and legal professionals working in Lille, Hauts-de-France, France and abroad.

Available and responsive, trusted partners, we advise our clients, business leaders of all sizes (VSE, SME, ETI), liberal and independent professionals, non-profit organizations, individuals, in consulting and litigation, in corporate law, business transfer, commercial law and companies in difficulty, real estate and construction law, labour law, tax law, intellectual property law and digital, contract law, consumer law, as well as in matters of personal injury and civil and commercial leases, whether at national or international level.

We also support our clients in mediation, arbitration and corporate strategy.

With proven expertise in international law, We work alongside foreign companies wishing to set up in France or having subsidiaries in the country. We advise and orient French companies with a project of implantation or being established abroad. 

Because of our international positioning and our proximity to the United Kingdom and Benelux in particular, our teams include bilingual English/French lawyers and work on a daily basis both orally and in writing in French and English. We also have a network of privileged partners around the world.

Parking is available for visitors

The firm is located 41 avenue de Flandre 59290 Wasquehal

From Monday to Thrusday : 8h30 – 12h30 – 14h – 18h
On Friday : 8h30 – 12h30 – 14h – 17h

Tél. +33 (0)3 20 74 60 32


The figures of the firm

2017 year of foundation
6 lawyers
95% satisfied
400 clients


We support our clients in multiple areas of law

Support our customers at 36°0 thanks to the complementarity of the business lines present within the In Extenso group: the figure, the law and the consulting expertise (wealth management, mergers and acquisitions consulting, tourism and hospitality consulting, business creation, financing consulting, study and innovation management consulting).


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In Extenso Avocats brings together legal advice experts around common values who help companies (VSE, SME, ETI and large groups), associations, foundations, liberal professions, public authorities and more broadly all decision makers, to secure, manage and optimize their activity. Our lawyers also intervene in litigation to ensure the defense of the interests of their clients before the courts and jurisdictions concerned. Consulting subsidiary of the In Extenso group, French leader in accounting for small businesses and SMEs, In Extenso Avocats is a network of interprofessional business law firms combining legal professionals and professionals of the figure for a 360° support of companies and individuals.

Multidisciplinary, In Extenso Avocats helps its clients, all sectors of activity combined in multiple areas of law such as business law, commercial law, tax law, labour law and social protection, real estate and construction law, urban planning and regional planning law, environmental law, public law, intellectual property law including certified expertise in GDPR, family and heritage law and international law. Our lawyers are also recognized as experts in specific sectors of activity such as hospitality, catering, tourism or sports.

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