Our patent litigation attorneys

Dhenne Avocats is a litigation boutique. The firm devotes its entire practice to patent disputes, before the Paris Judicial Court and before the Unified Patent Court, together with the matters directly connected to them: trade secrets, employee inventions, contracts and licences.

That focus has a practical consequence: the partner who takes the case is the one who argues it. The technical analysis is carried out in house, with the assistance of experts in the relevant field where the dispute calls for it, rather than delegated to a team discovering the technology on the eve of the hearing.

The team brings together five patent practitioners, trained in industrial property law and in technical litigation. It works in French, in English and in German, the languages in which most parallel European proceedings and part of the proceedings before the Unified Patent Court are conducted.

Every case is handled by at least two people, so that knowledge of the patent, of the prior art and of the exhibits never rests on a single memory. Validity and infringement charts, prior art analyses and technical exhibits are produced by the team itself.

The firm acts for industrial companies, laboratories, technology businesses and portfolio owners, in claim and in defence, alone or alongside the patent attorneys and foreign firms already in place. See our areas of expertise and our patent litigation.

We take instructions both as lead counsel and as French correspondent to a foreign firm, and we conduct procedural correspondence in English where the case calls for it.

To open a first discussion about a situation in progress, write to us : we will tell you promptly whether the firm is able to act, and on what timetable.

Brochure du cabinet / Firm brochure — PDF, English, 2026

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