Guillaume Briant

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Lynda Belaid is a top attorney recognized by Best Lawyers in the practice area(s) of Mergers and Acquisitions Law. Lynda, who practices law in Paris, France, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Lynda is held by other top lawyers in the same geographic and legal practice area.

Cécile Théard-Jallu has developed in-depth expertise as an attorney in private practice representing multinational corporations, including major US and European firms and organizations in the R&D and healthcare sector (public or private research institutions, academics, pharmaceutical laboratories, biotechnology companies, medical equipment manufacturers, service providers, software or connected health platforms publichers, investors, competitiveness clusters, tech transfer ...

Jérôme’s practice is focused on all aspects of international and domestic taxation and primarily on tax aspects of mergers and acquisitions, group structure reorganizations and private equity transactions.

Xavier Pernot is a partner in charge of the litigation-arbitration-mediation practice. With his experience in assisting our clients in strategic and high-stakes litigation, Xavier leads a multidisciplinary team whose main areas of practice are corporate litigation and equity transactions, commercial and operational litigation, and complex industrial and financial litigation. The team also acts in insolvency proceedings, enforcement proceedings and criminal business law.

Gaëlle Saint-Jalmes is a top attorney recognized by Best Lawyers in the practice area(s) of Regulatory Practice. Gaëlle, who practices law in Paris, France, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Gaëlle is held by other top lawyers in the same geographic and legal practice area.

Alexandre Marque is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law, Leveraged Buyouts, Mergers and Acquisitions Law and Private Equity Law. Alexandre, who practices law in Paris, France, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Alexandre is held by other top lawyers in the same geographic and legal practice area.

Martine Samuelian specializes in banking, investment and payment services as well as in insurance regulation. She also advises clients on banking and financial litigation (civil and criminal courts or independent administrative authorities such as the AMF and ACPR Sanctions Commissions, the ECB). This regulatory specialist leads a strong team dedicated to compliance, anti-money laundering and counter-terrorism financing, prudential requirements, governance and blockchain issues, and has been ...

Pierre-Emmanuel Chevalier is a top attorney recognized by Best Lawyers in the practice area(s) of Mergers and Acquisitions Law and Private Equity Law. Pierre-Emmanuel, who practices law in Paris, France, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Pierre-Emmanuel is held by other top lawyers in the same geographic and legal practice area.

After nearly twenty years’ experience as a tax lawyer with the Paris offices of Landwell (1995-2005) and August & Debouzy as of counsel, Alfred LORTAT-JACOB joined the Paris Office of Cornet Vincent Segurel as a tax partner in October 2010.Alfred LORTAT-JACOB holds a Master's degree in public finance and taxation from the University of Panthéon-Assas.He advises companies and company groups, French and foreign, as well as their managements on various areas of tax law (in parti...