Dhenne Avocats, your law firm specialized in patent litigation

Presentation of Dhenne Avocats’ activity

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

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

Dhenne Avocats is thus characterised by its focus on patent litigation, high value-added services at a fair price, responsiveness and willingness to move forward together with its clients.

Our attorneys, who have recognised expertise, represent our clients before the French, European and arbitration courts. They act in various technical sectors (e.g. mechanical, electronic, chemical), mainly in complex high value-added litigation (i.e. IT and life sciences).

Dhenne Avocats, a firm dedicated to patent litigation

The patent is an industrial property title. Useful to the creator of an invention, it guarantees a temporary reservation of exploitation on the French territory for a period of 20 years. During this period, the patentee can prohibit any other person from exploiting the protected invention. For the inventor, this is a recognition of his inventive activity and the financial reward that comes with it.

Patent law is a branch of industrial property law that is becoming increasingly important. Numerous disputes are likely to arise in this area (patent infringement action, patent cancellation action, employee inventions, etc.). In our highly competitive society, in a context of internationalisation of the economy and dematerialisation of exchanges, patents have become a priority for any inventor wishing to protect his creation. Nevertheless, because it is a living law, in constant evolution, patent law is as complex as it is exciting. This is why we put so much energy and fervour into defending each of our cases.

At Dhenne Avocats, our activity is precisely focused on the protection of your inventions. We defend and advise our clients in all patent law disputes.

What is the role of Dhenne Avocats?

Our firm accompanies you at various stages of the protection of your industrial creations.

The upstream advice

The first of our missions is to advise you on the best strategy to protect your innovations. Indeed, there are many ways to protect inventions. The patent is not the only way. In some cases, it may be wise to opt for contractual protection of know-how, or even a utility certificate.

Drafting of your agreements

Our firm assists you in the negotiation and drafting of all your contracts related to your industrial property rights. In particular, we offer you all our expertise concerning :

  • Confidentiality agreement;
  • Consortium agreement;
  • Patent assignment agreement;
  • Patent license agreement;
  • Patent co-ownership agreement;
  • Technology transfer agreement;
  • Know-how license agreement.

Defense in case of litigation

In spite of all the protections implemented, intellectual property rights can be violated in many ways. This can be the case when an inventor’s private rights are infringed, or in the event of a dispute with one of his competitors. Our role is to quickly put in place a defense strategy in order to assert your rights before the courts.

For example, we can assist you in :

  • Challenge a third party’s patent before a court;
  • Defend you against a patent infringement;
  • Defend you against an infringement of your business secrets;
  • Help you fight against unfair competition.

Frequently asked questions about our firm

Who is behind Dhenne Law Firm?

Dhenne Avocats is a Parisian law firm founded in 2018 by Matthieu Dhenne, which focuses its offer on French patent litigation expertise in various technical sectors (mechanical, electronic, chemical), while intervening more particularly in complex high added value fields (i.e. IT and life sciences) for a varied clientele (ETI, SME, CAC 40).

Dhenne Avocats is thus characterised by: its activity focused on patent litigation, a high added value service at a fair price, reactivity and the will to move forward together with its clients.

Matthieu Dhenne has already been distinguished by the Legal 500 (Tier 1 in the “Patent Litigation” category) and Leaders League (Strong Notoriety in the “Patents: Pharma, Biotech, and Life Sciences Litigation” category) rankings.

Why call on Dhenne lawyers?

  • A service tailored to our clients.
  • An efficient team of patent lawyers experienced in patent litigation led by Matthieu Dhenne.
  • A practice recognised by our peers, which explains the influence of the firm with regular interventions by the media.

Our firm was founded in 2018 by Matthieu Dhenne. A member of the Paris Bar since 2014, he is a reference in the world of patent litigation. As such, we are regularly consulted by the French authorities during reform projects or interviewed on this subject by the media. Matthieu Dhenne also teaches in the Master 2 Industrial Property program at the University of Panthéon-Assas. He is the French referent of the international Kluwer Patent Blog, as well as the author of numerous articles and books on patent law, in particular with regard to new information technologies. Finally, his expertise has been recognized by numerous international rankings (Legal 500 and Leaders League).

What areas do we cover?

We advise our clients in matters relating to the following technology domains.

  • Electronics
  • Telecommunications
  • FRAND undertakings
  • Chemistry
  • Pharmaceuticals
  • Biotechnologies
  • Medical devices
  • Mechanics

We also have an extensive non-litigation practice and advise clients on licensing agreements, software agreements, employee inventions, trade secrets and pharmaceutical regulation.

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

    Frédéric LESCURE
  • 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.” Although we haven’t worked together much, I wouldn’t hesitate for a second to entrust Matthieu with important cases.

    Gabriele MOHSLER
    VP Patents, ERICSSON
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    Pierre-Aimé DESPALLE
    Senior IP Counsel, HUAWEI
  • 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
  • Matthieu Dhenne has a very high level of expertise in his field, which is obviously a prerequisite but rarely encountered at this level. But what makes Matthieu’s texture real is the energy he puts into defending and winning his battles!

    Martin GENOT
    Co-President, PLEIADE VENTURE
  • Niccollo FERRETI, Associate Attorney
  • 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
  • Alessandro ZITO
    Intellectual Property Attorney, PRESSO LUXOTICCA
  • 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.”

  •  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