BORIS LACHAT
PARTNER
Personal data
Date of birth: 20.10.1981
Working languages: French
Email address: b.lachat@sl2cm.ch
Formation
Bachelor's degree in economic and social history with a minor in political science, University of Geneva
Advanced Studies Diploma (DEA) in Economic and Social History, University of Geneva
Bachelor of Laws, University of Geneva
Master of Laws, University of Geneva
Bar exam license
Career path
University of Geneva (2007-2008), assistant
Court of Justice, Geneva (2008-2009), trainee lawyer
Lenz and Staehelin Law Firm (2009-2011), trainee lawyer
Chirazi & Corminboeuf Harari Study (2011-2012), collaborator
Labour Court (2012-2013), Legal Clerk
Rental Board (2013-2015), Assessor Judge
CDLR-Avocats Law Firm, Geneva (2013-2022), Partner
Criminal court (since 2015), substitute judge
Lachat, Marconi, Müller Study (2023-2025), partner
Etude SIEGRIST, LAZZAROTTO, LACHAT, CLERIGO & MULLER (since 2026), associate
Other professional activities
Criminal court (since 2015), substitute judge
Teaching/Publications
2025 Lease agreement, in Collection of commercial contracts, models in French and English with commentary according to Swiss law, Geneva
2020 The absent tenant and the return of the premises, in the 21st Seminar on Tenancy Law, Neuchâtel
2019 Civil Procedure in Lease and Rent Matters, Lausanne, with David Lachat
