The team

The three partners and their collaborators form an experienced team, involved and committed to building trusting and lasting relationships with the firm’s clients.

Mathias Hermse

After several legal experience in companies and law firms and more than 11 years as a tax lawyer in the Paris branch of the law firm Lette Lette – Partners, an international law firm specializing in taxation, Mathias Hermse joined our firm in 2019.
He intervenes on transactions with a heritage capital, whether French or international, in consulting or litigation. He deals with tax and legal issues that concern business leaders, employees or the wealthy. He assists our clients in determining a heritage strategy and in the implementation of heritage restructuring, family transmission and offshoring operations. Mathias Hermse is a graduate of a DESS in Community Law and a Master 2 in Business Law specializing in taxation. He is a member of the Institute of Tax Counsel.

Antoine Le Roux

Antoine Le Roux has been registered with the Order of Lawyers since December 2008, he practices in corporate law, with a dominant mergers and acquisitions and private equity.
He graduated from DJCE in Rennes and completed an LLM at the University of Exeter in England. He practiced at CVS in Paris from 2008, before joining our structure in 2016. Antoine Le Roux advises our SME or ETI clients in the negotiation and implementation of their Mergers and Acquisitions, Restructuring, and Investment Funds operations. He is the author of many articles.

Clément Matheu

Graduated from the Master 2 Business Lawyer of the University of Pau and a Master’s degree in Corporate Tax Management obtained from the SKEMA Business School.
Clement Mattheu has been with the firm as a tax specialist since July 2017. He works in the firm’s tax department.

Camille Larrosa

Registered at the Paris Bar since 2016. Prior to working for The law firm Léonard Avocats, Camille Larrosa practiced in a reputable French law firm in business law (corporate law, mergers and acquisitions and commercial contracts) and was a corporate and stock law lawyer in the legal department of the Havas Group.
Camille Larrosa is mainly involved in corporate and commercial law. Camille Larrosa holds a Master’s degree in Business Comparative Law, Paris II Pantheon Assas and a Diploma in Law, Kent University, United Kingdom.

Morgane Onno-Chesnel

Morgane Onno-Chesnel is a corporate lawyer. After 7 years with a business law firm, she joined our firm in 2021.
It is attached to the firm’s M-A, Private Equity and real estate divisions.
Morgane Onno-Chesnel holds a DEA in business law and a master’s degree in business law (University of Rennes).


Scarlett Saadoun

SScarlett Saadoun, who holds a master’s degree in marketing and a CQP in legal assistant, joined the firm as a legal assistant in 2018.
Scarlett Saadoun works in the context of the current legal and administrative secretariat, the formalities with the registries and the Commercial Courts, the follow-up of procedures and files with the courts and the general management of the firm (HR, communication, documentation). Scarlett Saadoun previously worked as a legal assistant at H2O Lawyers.

Claire Fricou

Claire Fricou is the firm’s administrative and financial manager.