Cohen & Gresser Trio Joins Paris Law Firm and Launches Tech Practice


The independent French firm Ayache Société d’Avocats has created a technology department in Paris with a firm of three lawyers, led by a partner from Cohen & Gresser.

Guillaume Seligmann joins Ayache as a partner and head of the new department. He led the same firm at Cohen & Gresser in Paris from 2016 to 2022, as well as at the French firms Cotty Vivant Marchisio & Lauzeral from 2007 to 2016 and Kahn & Associés from 2000 to 2007.

Héloise Masson and Laura Mallard, also of Cohen & Gresser, join Seligmann as partners.

The team works in all major areas of information technology and advises large companies and industry players as well as start-ups and investment funds.

This new center of expertise covers all the main issues encountered by customers in the field of technology: IT, internet, e-commerce, protection of personal data, telecommunications, crypto-assets and cybersecurity.

In a statement announcing the moves, Seligmann noted that “the tilt towards services and the accelerating digitalization of the economy, as well as the growing share of technology-related issues in all business sectors, make of a technological practice a strategic axis of development”.

Olivier Tordjman and Bernard Ayache, co-managers of Ayache, added: Not only has expertise in information technology law become essential in a large number of transactions, but it is also a necessary complement to be able to meet our digital ambitions and those of our clients on a more global scale..”

Founded 30 years ago, Ayache is an independent French business law firm of 50 lawyers, including 16 partners and 7 counsels, in Paris.

Cohen & Gresser has been contacted for comment.

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