Guillaume Bossy

With a post-graduate diploma in business law and taxation from the University of Clermont-Ferrand, Pierre GUIGNAND has been a member of the Lyon bar since 2006.A lawyer with Ratheaux from 2006 to 2009, he joined Lamy & Associés in 2009 and became a partner in 2015.Pierre GUIGNAND also works in all areas of corporate law, particularly in domestic and international mergers and acquisitions, private equity and investment operations.

Brice BRIEL is a partner and co-head of the Employment law – Social welfare law department. He has developed particular expertise in : collective bargaining (conclusion of collective agreements, working time, mandatory annual negotiations, incentives and profit-sharing, etc.), workforce management (employment contracts, legal monitoring for updating collective agreements, variable pay, disciplinary proceedings, terminations, mobility, etc.), social welfare, individual and collective gri...

Séverine BRAVARD has developed recognized expertise in : mergers and acquisitions, on both the legal and tax aspects national and international restructurings of groups of companies, on both the legal and tax aspects financing and banking law on behalf of managers or banking institutions, in the context of the preparation and negotiation of banking documentation (structured financing – mezzanine debt – asset financing and others). She was elected by her peers as one of the ...

Alexis CHABERT is co-head of the LYON office’s Business litigation Department. A specialist in legal proceedings applied to commercial litigation, he has developed solid experience in conflicts between partners, liability of company directors, unfair competition, compliant delivery, defective equipment, etc. He has also developed particular expertise in criminal business law to assist company directors who are victims of crime (fraud, breach of trust, forgery and use of forgeries, etc.)...

Ghislain de Pazzis is a lawyer recognized by Best Lawyers in the practice area of Tax Law. Ghislain practices law in Lyon, France Best Lawyers has recognized Ghislain de Pazzis since 2026. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Ghislain de Pazzis is held by other lawyers.

Jean-François DEFUDES is partner and co-head of the “Corporate taxation” department. His professional career has enabled him to acquire solid expertise in the following areas : Corporate and group taxation (restructuring, corporation tax, tax consolidation, VAT, local taxes, etc.) Mergers and acquisitions and restructuring operations (M&A) Taxation of executives (remuneration, capital gains, dividends, IFI) Tax audit and litigation International taxation Tax demateriali...

Laurent BUTSTRAËN is co-head of the Non-Profit Organizations Department. He has developed recognized expertise in : legal and tax aspects of the incorporation and operation of associations and non-profit organizations (legal audits, tax, incorporation of structures relating to the implementation of complex projects, etc.) contractual undertakings (drafting of contracts, transactions, etc.) due diligence legal and tax audits, design and implementation of the reorganization and restructuri...

Emmanuel KAEPPELIN is co-head of the "Merges & Acquisitions - Corporate law" Department. Alongside standard services in corporate law (repeat advisory work and company management), he has developed more specific expertise in the following areas : company transfers and acquisition audits (acquisitions on behalf of French or international groups) equity financing and company restructuring (LBOs, MBOs, fundraising, mergers, demergers, partial asset transfers, agreements between partners, etc...

Delphine Monnier is a lawyer recognized by Best Lawyers in the practice area of Labor and Employment Law. Delphine practices law in Villeurbanne, France Best Lawyers has recognized Delphine Monnier since 2025. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Delphine Monnier is held by other lawyers.

Dominique Chapellon-Liedhart is a lawyer recognized by Best Lawyers in the practice area of Labor and Employment Law. Dominique practices law in Lyon, France Best Lawyers has recognized Dominique Chapellon-Liedhart since 2026. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Dominique Chapellon-Liedhart is held by other lawyers.