The French Law Firm dedicated to Patent Litigation

Dhenne Avocats, your law firm dedicated to patent litigation

Dhenne Avocats un Cabinet dédié au contentieux des brevets d’invention-mobile

A patent is an industrial property right. It is useful to the creator of an invention, guaranteeing them temporary exclusive rights to exploit it in France for a period of 20 years. During this period, the patent holder can prevent anyone else from exploiting the protected invention. For the inventor, it is recognition of their inventive activity and the financial reward that comes with it.

Dhenne Avocats, a law firm dedicatedto patent litigation

Le droit des brevets constitue une branche du droit de propriété industrielle prenant une importance croissante. De nombreux contentieux sont susceptibles de survenir en la matière (action en contrefaçon du brevet, action en annulation du brevet, inventions de salariés, etc).

Dans notre société très concurrentielle, dans un contexte d’internationalisation de l’économie et de dématérialisation des échanges, les brevets sont devenus une priorité pour tout inventeur désirant protéger sa création. Néanmoins, parce qu’il est un droit vivant, en constante évolution, le droit des brevets se révèle être aussi complexe que passionnant. C’est d’ailleurs pour cela que nous mettons autant d’énergie et de ferveur à défendre chacun de nos dossiers.

At Dhenne Avocats, our activity is precisely focused on the protection of your inventions.

We advise and counsel foreign and domestic businesses in all patent law disputes.

Dhenne Avocats, a law firm dedicated to patent litigation

Dhenne-avocats-home-banner

Dhenne Avocats is a leading French law firm dedicated to patent, supplementary protection certificate (“SPC”) and know-how litigation as well as regulatory advice notably in the life sciences field.

Dhenne Avocats, your law firm dedicated to patent litigation

The firm serves leading companies whose legal needs have a strong scientific and technological component.

Dhenne Avocats se caractérise ainsi par son activité centrée sur le contentieux des brevets, une prestation à haute valeur ajoutée à un prix juste, la réactivité et la volonté d’avancer de concert avec ses clients.

Nos avocats, qui bénéficient d’une expertise reconnue, représentent nos clients devant les juridictions françaises, européennes et arbitrales. Ils interviennent dans divers secteurs techniques (e.g. mécanique, électronique, chimie), principalement dans les contentieux complexes à haute valeur ajoutée (i.e. informatique et sciences de la vie).

The role of Dhenne Avocats

The role of Dhenne Avocats

Our firm's aim is to assist you at all stages of protection of your inventions.

upstream advice

Our primary mission is to advise you on the best strategy for protecting your innovations. There are many ways to protect your intellectual creations. When it comes to inventions, patents are not the only option. In some cases, it may be wise to opt for contractual protection of know-how or a utility certificate.

Conseils en amont

In many cases, it is advisable to adopt a “360” strategy that combines secrecy (particularly NDAs) with the various areas of intellectual property (patent law, trademark law, design law, and copyright law) to ensure optimal protection for your innovations.

For example, the source code of a software program will be protected by copyright, while its functions may be protected by patents. However, in some cases it may be more appropriate to take action for parasitism.

Response to your agreements

Our firm assists you in negotiating and drafting all contracts related to your industrial property rights :

Confidentiality agreement (also known as an NDA)
Patent assignment agreement
Patent license agreement
Patent co-ownership agreement
Technology transfer agreemen
Know-how transfer agreement
Trademark assignment agreement
Trademark licensing agreement
Design assignment agreement
Design license agreements
Copyright assignment agreements
Computer maintenance contract
Employee contracts (in particular for confidentiality clauses or for potential employee inventions)

Partnership agreement including aspects of intellectual property.

Defending your rights

On the side or prior to negotiations, the Intellectual Property Right can be litigated if necessary or desirable. This can be the case when an inventor’s private rights are infringed, notably in the event of patent infringement. Our role is to establish a strategy to achieve your objective on a reasonable risk base and to assist you before national Courts and/or the Unitary Patent Court ('UPC").

Palais justice mobile

For example, we can assist you with the following :

Gathering evidence
of infringement with
a seizure of counterfeit goods

Introducing an invalidation action of a third party's patent before a court Defend you against a patent infringement

Defend you against a patent infringement

Defend you against an infringement of your trade secrets, particularly in the event of a seizure of counterfeit goods

Help you fight against unfair competition, particularly in the event of parasitism

Frequently asked questions about our firm

Dhenne Avocats is a Parisian law firm founded in 2018 by Matthieu Dhenne.

Matthieu Dhenne has already been recognized by Legal 500 (Tier 1 in the Patent Litigation category) and Leaders League (Highly Noted in the categories “Patents: Litigation” and “Patents: Pharmaceutical, Biotech, and Life Sciences Litigation”).

Tailor-made service for our clients

An efficient team of patent attorneys

Recognized by our peers, as evidenced by our clients, which explains the firm's influence with regular appearances in the media.

3. A practice recognised by our peer

Experienced in patent litigation led by Matthieu Dhenne

Our firm was founded in 2018 by Matthieu Dhenne, a member of the Paris Bar since 2014 and a leading figure in the field of patent litigation.

As such, we are regularly consulted by the French authorities on reform projects and interviewed on this subject by the media. Matthieu Dhenne also teaches in the Master 2 Industrial Property program at Panthéon-Assas University. He is the French correspondent for the international Kluwer Patent Blog and the author of numerous articles and books on patent law, particularly with regard to new information technologies.

Finally, his expertise has been recognized by numerous international rankings (Legal 500 and Leaders League).

Nos avocats brevets défendent et conseillent nos clients dans divers domaines techniques

Nous avons développé une pratique contentieuse et non contentieuse, notamment axée sur les contrats de licence, d’inventions de salariés et de secrets d’affaires.

Électronique
FRAND undertakings
Pharmaceuticals
Dispositifs médicaux
Télécommunications
Chemistry
Biotechnologies
Mécanique

They trust us

Matthieu a montré lors de ses différentes interventions et présentations lors de séminaires son expertise sur les droits de brevets, en particulier sur les inventions mises en oeuvre par ordinateur.
Antoine Dupont

Responsable licences au Commissariat à l'énergie atomique et aux énergies alternatives (CEA)

Matthieu dispose d'une grande compétence en droit des brevets que j'ai pu apprécier lors de nos différentes collaborations.
Anne-Catherine Chiariny

Responsable du Master Innovation de l'Université de Montpellier

Matthieu, a competent professional with the desire to always get involved and the aim of bringing home the result. A truly deep knowledge of IP law.
Elena Zillio Raffin

Consulente legale interno presso Fiorital S.p.a.

Matthieu has proven to be not only a very skilled patent, fast thinking and seasoned lawyer but has handled our case very aggressively (in a positive way!) and with a lot of commitment. Highly recommended.
Michel Rorai

Head of IP and General Counsel Marketing at Lipton Teas and Infusions

Matthieu is an accomplished and astute French patent litigator and counselor, with deep and growing experience in the new across French's courts and the new Unified Patent Court. His expertise on patent litigation is strongly recommendable.
Claire Le Floch

Head of Legal Intellectual Property Law

Matthieu is nothing less than the "Mbappé" of french patent law! Smart, energetic, entrepreneurial and with a strong scientific background (the latter being more the white than the Mbappé). Plus a multi-lingual nice guy.
Prof. Dr. Tilman Müller-Stoy

German Patent Litigator, BARDEHLE PAGENBERG

Matthieu is one of the most brilliant patent litigator I met in Europe. Very deep legal and technical understanding with as a strong client-focused approach. Matthieu is creative by essence, and able to design successful legal strategies.
Guillaume Ménage

Directeur de la propriété intellectuelle, Ledger

Maître DHENNE, an essential skill for the defense of our IP. Resourceful, valiant and full of energy to advise you and defend your interests. Available and attentive, which makes it a pleasant collaboration.
Stephan AUBERGER

Founder, SALVECO

Matthieu Dhenne possède une très grande expertise dans son domaine. Ce qui fait la réelle texture de Matthieu, c’est l’énergie qu’il met pour défendre et gagner ses combats !
Martin GENOT

Co-President, PLEIADE VENTURE

I’ve worked with Matthieu in regards an important patent case. He has a deep knowledge about patent law and a strong engineering expertise. Highly recommended.
Alessandro ZITO

Intellectual Property Attorney, PRESSO LUXOTICCA

Matthieu is a skilled practitioner with vast experience in the IP field. I strongly recommend him for his capability, reliability and professionalism
Niccollo FERRETI

NUNZIANTE MAGRONE IP

Matthieu is one of the leading experts in patent infringement litigation and the organization of complex and multiple seizure operations. He is always up to date with the latest case law.
Jérôme LEGRAIN

Bailiff

Mathieu Dhenne provides precise and clear advice in a field that is rarely clear: that of trademarks and patents. He knows how to be pragmatic, depending on the issues.
Ivan MASSONNAT

PAI PARTNERS, DOMAINE BELARGUS

Matthieu is clearly a highly skilled and knowledgable expert in his field. Although we did not work very much together, I would not hesitate a second to entrust Matthieu with important cases.
Gabriele MOHSLER

VP Patents, ERICSSON

Matthieu Dhenne accompanies and advises the company throughout the often lengthy proceedings. We note his constant investment in the cases. The participation in the mental handling of a procedure, combined with the competence maintains the relationship of trust. Trust, a simple word, always justified.
Dominique SOARES

CEO, WAFF

If you are looking for a patent specialist who is 200% on his cases. Matthieu is perfect.
Frédéric LESCURE

CEO, SOCOMORE GROUP

I had the opportunity to work with Matthieu on a patent case with parallel procedures in Germany and France. Matthieu is primarily a highly specialized, accurate and innovative jurist.
Pierre-Aimé DESPALLE

IP Strategist | Patent Attorney (EP & DE) | UPC Representative | SEP