Partners to your ambitions

In an ever-changing world, Adamas is reinventing its expertise to fulfil a new ambition.

This ambition is embodied by Adaltys: a new banner, that of a law firm of excellence, which draws on its 50 years of history to deepen the future of legal consulting and achieve your aspirations.

Humanism Technique Dynamism Proximity

References & Rankings



Public law- Décideurs magazine



2020 Top law firms - Public law - Le Point magazine



2020 Silver Trophy - Public Law - Décideurs magazine

From Adamas to Adaltys

Founded in 1969, our firm carries with it 50 years of history and excellence in public law. Year after year, we have consolidated our expertise and our teams within a constantly growing territorial network: first in Lyon, then in Paris, Bordeaux, Marseille and Rennes, as well as in China, in Beijing and Shanghai. After five decades of evolution, Adamas has decided to reinvent itself to carry a new ambition through the creation of a new banner: Adaltys.

Adaltys is above all a new cross-functional approach to our know-how, offering a truly intermixed support in both public and private law. It is also a service offering designed to be adaptable, so as to respond quickly and flexibly to our clients’ complex and emerging legal issues. Lastly, Adaltys is the promise of a support service which integrates quality analysis and creative audacity into operational and pragmatic solutions tailored to each and every client’s reality.

« Adamas has always embodied excellence in its expertise. With Adaltys, excellence is today associated with a collective approach and our ambition to act and innovate for a common success. »
Guillaume Chaineau - Partner

More than just law,
a true vision of law

Our approach to law is reflected in a strong concept: legal reengineering. Our aim is to constantly adapt our solutions to meet your changing expectations, while preserving the technical and human fundamentals, the core of our reputation.


Expert & Multidisciplinary lawyers

Our lawyers’ specialisation, combined with the multidisciplinary nature of our areas of expertise, enables us to assemble the right team to carry out the missions entrusted to us.


A hybrid of public and private business law

Adaltys provides a unique, full-service oriented solution in both public and private business law. Our historical conviction lies in fully optimising the mix of each of our areas of expertise in public and private law, in order to develop integrated and global solutions.


Stability & Customer Trust

The stability of our teams is one of the strong points of Adaltys’ client relationships. The solid foundations of this long-term relationship are the source of lasting trust between our lawyers and our clients.


Proximity & international development

We privilege a local anchorage when accompanying our clients, in order to understand and precisely target the issues specific to each territory.

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Adaltys, committed to a harmonious coexistence

Aware of the fundamental role of law in today’s society, Adaltys is involved with public players and associations through Pro Bono initiatives designed to promote access to law and equal opportunities.

CSR Charter

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