Protect and defend your rights

European patent and trademark attorneys & lawyers

With offices in three major European locations, Paris, Munich, Alicante, CASALONGA provides a fully integrated IP service to clients, ranging from major multinationals to small and medium companies and individuals.

Over 100 patent and trademark attorneys, attorneys at law and staff, all at your service for protecting your IP rights in any technical field.

Our attorneys and lawyers are teaching on IP matters in several educational programs and are frequently publishing articles on IP in specialized magazines and speaking in conferences all over the world.

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European patent and trademark Attorneys

CASALONGA & ASSOCIÉS with offices in Paris, Grenoble, Toulouse and Alicante is considered one of the premier French patent and trademark attorneys firm representing before the French and European major IP Offices (INPI; EPO; OHIM; WIPO).

CASALONGA & ASSOCIÉS is regularly cited as one of the leading French IP firm.

The French and European patent and trademark attorneys of CASALONGA & ASSOCIÉS offer technical and legal counselling in all areas of intellectual property law (Prosecution, registration, opposition, litigation, audits, IP rights valuation...). and in all technical fields (Mechanics, Electronics, Telecommunications and IT, Chemistry, Biotechnology and life science)

For patent court litigations, the patent attorneys of CASALONGA & ASSOCIÉS work in close cooperation with the IP lawyers of CASALONGA AVOCATS.


Attorneys at Law

CASALONGA AVOCATS is a full service IP law firm with offices in Paris and Alicante representing clients in all litigation aspects of Intellectual property law before the French and European courts.

CASALONGA AVOCATS is particularly specialized in European patent litigation in close collaboration with the European patent attorneys of CASALONGA & ASSOCIÉS, thus linking technical knowledge of the case with legal skills.

CASALONGA AVOCATS also handles trademark oppositions before the French Trademark Office (INPI) , oppositions and cancellation procedures as well as design patent revocation procedures before the Community Design and Trademark Office (OHIM).


German and European patent Attorneys

CASALONGA & PARTNERS represents clients directly before the European Patent Office (EPO) and the German Patent and Trademark Office (DPMA).

The German and European patent Attorneys of CASALONGA & PARTNERS are specialists of the European Patent System and the German IP Law. They assist clients in all prosecution, opposition and legal advising.

CASALONGA & PARTNERS represents companies from all over the world with a particular emphasis on Asia and the US.

CASALONGA & PARTNERS covers all technical fields from Mechanics and IT to chemistry and life science.

Unitary Patent App

Download our fees comparator

This UP app enables the comparison and computation year by year of the costs of the renewal fees to maintain in force a granted European patent, with or without the Unitary patent. The costs depend on the countries that you select.
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