Company lists · Data refreshed September 2026
Top 25 Patent law firms based in France
RevenueBase identified 229 patent law firms headquartered in France as of September 2026 and tracks 2,371 professional contacts across them, including 859 with verified work emails and 44 with mobile numbers. Paris is the largest hub.
This list covers patent law firms headquartered in France, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, how directly it supports the match, and when it was last checked. Data refreshed September 5, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest patent law firms based in France
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 186 | ||||
“Lavoixis a leading firm fully dedicated to IP.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 2 | 164 | ||||
“Intellectual Property Law Firm For 90 years REGIMBEAU’s ambition has been to make Industrial Property a key asset in the development of economic players and project leaders.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 3 | 107 | ||||
“CASALONGA is a leading European Intellectual Property (IP) law firm supporting and advising innovation-driven organisations across Europe and beyond.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 4 | 51 | ||||
“Vidon Group is a leading Intellectual Property law firm providing services throughout the world via its own offices in Europe (France and Germany) and Asia (Shanghai, Hong-Kong…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 5 | 50 | ||||
“EGYP is a firm of intellectual property attorneys formed in 1985 by Ernest Gutmann and Yves Plasseraud, offering its clients a high added value service in all aspects of…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 6 | ICOSAPartial evidence | 50 | |||
“ICOSA is an IP Law firm dedicated to Life Sciences, Chemistry and Medical Device.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 7 | 42 | ||||
“Le cabinet Nony a été intégré à IPSILON.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 8 | 28 | ||||
“Hautier IP is one of the oldest and most respected Intellectual Property firms in France and Monaco, dating back to 1892.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 9 | 27 | ||||
“Becker & Associés is an Intellectual Property Law firm founded in We bring to our clients our expertise, creativity and commitment in acquiring and defending their Industrial…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 10 | 24 | ||||
“La propriété intellectuelle est notre cœur de métier, qu'il s'agisse de brevets, de savoir-faire, de marques, de modèles ou de droits d'auteur, nous proposons - De sécuriser vos…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 11 | TwelveIndirect evidence | 21 | |||
“TWELVE est un cabinet d'avocats créé en 2012 par quatre avocats au barreau de Paris, dédiés au droit de la propriété littéraire et artistique, au droit des marques et dessins et…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 12 | 20 | ||||
“Notre cabinet, fondé en 2007 par Olivier CAMUS et Alexandre LEBKIRI, deux ingénieurs-Conseils en Propriété Industrielle expérimentés, vous accompagnera efficacement dans…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 13 | 20 | ||||
“Associés : Emmanuel Huyghe, Elsa Martin Touaux, Maryse Dulout, Claudine Kauffmann, Alexandre Delye, Grégory Riou IP TRUST réunit une équipe de professionnels formés pour…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 14 | 20 | ||||
“Bandpay & Greuter is an IP law firm striving to modernize services in patent matters.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 15 | 18 | ||||
“We accompany a broad range of clients, including companies, individuals and institutions, operating across France and abroad.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 16 | Jacobacci Coralis HarleIndirect evidence | 18 | |||
“Le cabinet Jacobacci Coralis Harle est né en 2016 du rapprochement entre le cabinet Jacobacci & Partners et le cabinet Coralis Harle Phelip, deux cabinets historiques ayant une…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 17 | 16 | ||||
“A Boutique law firm in Paris and Geneva, we provide creative legal services for the protection, development and transfer of your innovations.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 18 | Cabinet LE Guen & AssociesIndirect evidence | 14 | |||
“Depuis 1970, nous conseillons des grands groupes internationaux mais aussi des PME-PMI, des inventeurs indépendants pour déposer et gérer leurs droits de Propriété Industrielle en…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 19 | 14 | ||||
“Barnett Avocats is a law firm specialised in intellectual property in the following areas: music, art and design, cinema, audiovisual, fashion and, more broadly, all creative…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 20 | 12 | ||||
“Founded by three partners who acquired significant experience in leading international and French law firms, Blanche Avocats is an independant law firm focusing on Intellectual…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 21 | 12 | ||||
“Fondé en 2005 par Vanessa Bouchara, le Cabinet Bouchara & Avocats est un cabinet d’avocats situé à Paris, Lyon et Strasbourg.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 22 | 11 | ||||
“Nous sommes un cabinet d’avocats de niche, créateur de solutions de protection et de défense des actifs immatériels et contractuels de l’entreprise.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 23 | 11 | ||||
“BONNIER SAINT-FELIX est un cabinet d'avocats d'affaires parisien.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 24 | Rvdb IPIndirect evidence | 10 | |||
“Start-up, TPE/PME, groupe industriel, laboratoire de recherche, inventeur indépendant, notre cabinet vous accompagne dans toutes vos démarches de propriété industrielle en vous…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 25 | 10 | ||||
“Nous assistons nos clients depuis près de 30 ans dans leur stratégie de propriété intellectuelle en intervenant à leurs côtés, en Europe et à l’international, tant aux stades de…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 229 patent law firms based in France
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Patent law firms based in France at a glance
As of Sep 5, 2026Companies by employee count
Verified emails by last verification
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among patent law firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in France whose own description of what they do matches “patent law firms”. Matching reads each company's description, not its industry code or its name.
- What we exclude
- Companies whose own description does not clearly place them among patent law firms, and records with no verified work email. Companies headquartered outside France are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and an evidence rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 859 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 5, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Patent law firms by metro
- Patent law firms in Paris131
Frequently asked
How many patent law firms are there based in France?
RevenueBase identified 229 patent law firms headquartered in France as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Lavoix, headquartered in Paris, tops this list with the largest team on record.
Which city has the most patent law firms?
Paris leads with 131 headquartered companies, followed by Lyon (16) and Marseille (6).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 859 verified decision-maker contacts tracked across these 229 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 5, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.