Lucien Masmejan
About Lucien Masmejan
Lucien Masmejan is a lawyer based in Geneva, CH and has been recognized in The Best Lawyers in Switzerland™ since 2019. Lucien Masmejan is recognized in the following practice areas:
- Geneva, Switzerland
- Tax Law
- Trusts and Estates
- Wealth Management Practice
Current Firm: Lenz & Staehelin
Location: Geneva, CH
Nearby Lawyers
Partner Sidonie Morvan has 20-years experience in real estate law with a wealth of expertise in construction law, having expedited developments in both the private (real estate transactions, brokerages, contracts for architects and builders, and leases) and public (planning and construction permits) sectors. Ms Morvan regularly advises developers, architects, real-estate agents, general contractors and property owners on the day-to-day management of their businesses, and can represent them be...
Manuel Bianchi della Porta advises entrepreneurs and companies. He assists them for their projects and when important operations are ahead (acquisitions, transmissions, restructuring, etc.). He helps them assess risks/opportunities and take difficult decisions. He is also on their side when weather turns bad. His relationship with clients is defined by personal commitment and availability. Recognized for his thoroughness, pragmatic approach and sense of priorities, he never loses sight of the...
Rayan Houdrouge advises and represents Swiss and multinational companies as well as international organizations on all employment law matters. He has an extensive experience in executive transfers, compensation packages, work regulations, internal audits and collective procedures such as business transfers and collective dismissals. Rayan Houdrouge is also an accredited social security expert (Swiss federal certificate) and regularly assists clients in matters related to social security and p...
Jérôme Levrat specialises in corporate law, private equity, venture capital, M&A and commercial matters. He regularly advises funds and companies (including in the industrial, distribution, health care and life sciences, finance and energy sectors) in international and national M&A and private equity transactions, and routinely represents investors and start-ups in venture capital investments and financial rounds. Jérôme also has solid experience in regard to...
Hubertus Hillerström is a partner in the Banking & Finance Team. He is specialised in national and international financings and mergers & acquisitions, including structured finance as well as private equity and venture capital transactions. He has accompanied numerous commodities and trade finance operations (oil and gas, metals and soft commodities) and follows closely the legislative changes in this field. Hubertus Hillerström also specialises in real estate transactions a...
Philippe Pulfer is widely recognised as one of Switzerland’s leading private client lawyers and, for nearly 20 years, has been constantly top-ranked by all major professional directories. He is, according to Chamber HNW, ‘the go-to person in Switzerland’ in his area of practice and has been described by Legal 500 as 'one of the most knowledgeable trust and private client practitioners in Switzerland'. He has been included in the Legal Week Private Client Global Elite since t...
Expert in corporate tax law, international tax planning, mergers and acquisitions, as well as strategy and transfer pricing. Also acts as counsel in domestic and international tax criminal proceedings. Seats on the Board of directors of several companies. He has extensive experience in banking tax law, as well as in taxation of investment structures (investment funds and corporate holdings) and commodity trading companies.
Carl Heggli is a top attorney recognized by Best Lawyers in the practice area(s) of Trusts and Estates and Wealth Management Practice. Carl, who practices law in Geneva, Switzerland, has been recognized since 2014. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Carl is held by other top lawyers in the same geographic and legal practice area.
Olivier Sigg is a partner in the Private Clients team as well as an experienced employment lawyer. He heads our Geneva office. He is known, both in Geneva and in London, where he worked for one year, as an expert in complex crossborder matters and is regularly instructed by foreign lawyers, in particular from common law jurisdictions. Olivier Sigg’s private client practice includes various estate-planning techniques. In particular, as a TEP expert, he specialises in trusts, foundations,...
Christophe Buchwalder is a top attorney recognized by Best Lawyers in the practice area(s) of Banking and Finance Law, Corporate Law and Mergers and Acquisitions Law. Christophe, who practices law in Geneva, Switzerland, has been recognized since 2014. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Christophe is held by other top lawyers in the same geographic and legal practice area.
Explore and Learn
How to Sue for Defamation: Costs, Process and What to Expect
by Bryan Driscoll
Learn the legal standards, costs and steps involved when you sue for defamation, including the difference between libel and slander.
2026 Best Lawyers Awards in Canada: Marking 20 Years of Excellence
by Jamilla Tabbara
Honoring Canada’s most respected lawyers and spotlighting the next generation shaping the future of law.
The Family Law Loophole That Lets Sex Offenders Parent Kids
by Bryan Driscoll
Is the state's surrogacy framework putting children at risk?
Best Lawyers 2026: Discover the Honorees in Brazil, Mexico, Portugal, South Africa and Spain
by Jamilla Tabbara
A growing international network of recognized legal professionals.
Unenforceable HOA Rules: What Homeowners Can Do About Illegal HOA Actions
by Bryan Driscoll
Not every HOA rule is legal. Learn how to recognize and fight unenforceable HOA rules that overstep the law.
Holiday Pay Explained: Federal Rules and Employer Policies
by Bryan Driscoll
Understand how paid holidays work, when employers must follow their policies and when legal guidance may be necessary.
Reddit’s Lawsuit Could Change How Much AI Knows About You
by Justin Smulison
Big AI is battling for its future—your data’s at stake.
US Tariff Uncertainty Throws Canada Into Legal Purgatory
by Bryan Driscoll
The message is clear: There is no returning to pre-2025 normalcy.
The 2026 Best Lawyers Awards in Chile, Colombia and Puerto Rico
by Jamilla Tabbara
The region’s most highly regarded lawyers.