Olivier Thévoz

Founding Partner – Attorney-at-Law
Admitted to the Bar in the Canton of Vaud
Foreign Legal Consultant in Texas
Master of Law in Private Estate and
Tax Law, Litigation, summa cum laude (Lausanne, 2011)
Swiss Certified Accountant (Expert Fiduciaire Diplômé, 2006)

Areas of expertise

International tax law
Swiss tax law

Professional experience

Olivier Thévoz began his career at the age of 15 with a commercial apprenticeship at the accounting and tax consultancy service provider (société fiduciaire) Fibexa SA. Shortly after completing his apprenticeship, he embarked on his first entrepreneurial venture as a partner and manager at the company GGC Groupe Gestion Conseil SA. He kept studying in parallel and passed his Swiss federal certificate as a fiduciary agent (agent fiduciaire avec brevet) with flying colours at the age of 23. He then came to manage the Morges branch of the accounting and tax consultancy service provider Fidexaudit SA and obtained his Swiss federal diploma as a certified fiduciary expert (diplôme fédéral d’expert fiduciaire) in 2006. Keen to supplement his accounting skills with legal knowledge, he took up studying at the University of Lausanne whilst continuing to perform professionally. In 2008, he joined a law firm specialising in tax law as an audit assignment manager, obtained his Bachelor’s degree in Law – magna cum laude – in 2009, followed by his Master’s degree – summa cum laude – in 2011 and was awarded the Ecublens Prize for Outstanding Achievement (Prix d’Excellence de la Commune d’Ecublens). He subsequently prepared the Bar exam (stage d’avocat) at the law firm of Mr. Robert Fox in Lausanne whilst retaining his own clientele on a freelance basis. After his admission to the Bar in 2013, he joined the law firm Heim Paschoud Thévoz Weniger as a partner with a view to developing its commercial, financial and tax division. In 2015, he founded THEVOZ Attorneys in Lausanne and in Geneva. In 2017, he was certified as a “Foreign Legal Consultant” in Texas. Thus, he set up the law firm Thevoz, LLC in the United States specialized in international law.

For a number of years, Olivier Thévoz has been appointed as Director of several financial companies and acts as expert during the examinations for the certifications of Swiss federal fiduciary agent (brevet fédéral d’agent fiduciaire) and Swiss federal fiduciary expert (diplôme fédéral d’expert fiduciaire). He has also given courses at AKAD Banking and Finance and the Swiss Chamber of Certified Accounts and Tax Experts (Chambre fiduciaire).

Danilo Delgado

Manager – Attorney-at-law
Admitted to the bar in the Canton of Vaud
Swiss certified tax expert (2016)
Master’s degree in law, summa cum laude (Genève, 2003)

Area of expertise

Swiss and international tax law

Professional experience

Danilo Delgado developed a special interest in tax law during his studies in Geneva and Bern Universities. After the attorney traineeship (Stage d’avocat) in the law firm Velo Villa & Associés in Geneva, he obtained his license to practice law (brevet d’avocat) in 2007 and joined the fiduciary company Fidinter SA where he developed his tax knowledge and skills before joining another fiduciary company specialized in tax matters, Fiscaplan SA.

During these years, he developed his competences in the taxation of individuals and related procedures. In 2012 he came back to the Bar in the law firm Lenz & Staehelin in Geneva.

During these 3 years, he had an opportunity to practice in several new areas, particularly taxation of moral persons and their restructuring, international taxation, indirect taxes (withholding tax and stamp duty) and real estate tax system. He is also drafted contracts related to taxation issues, such as share purchase agreements or other restructuring operations. Danilo Delgado joined our law firm as Manager in February 2016.

Sylvain M. Bogensberger

Partner – Attorney-at-law
Admitted to the Bar in Canton of Geneva
SBA Certified Inheritance law Specialist (2016)
Bachelor of Laws (Lic. Jur.) Geneva (1996)

Area of expertise

Inheritance Law
Matrimonial Law
Commercial and Sports Law
Immigration law

Professional experience

Sylvain Bogensberger joined THEVOZ Attorneys on 1 January 2019. He is our firm’s newest partner and heads our inheritance law practice.

Mr. Bogensberger focuses his practice on estate planning and inheritance law. He is a Swiss Bar Association (SBS) Certified Inheritance Law Specialist and holds Certificate of Advance Studies (CAS) in Inheritance Law from the University of Lausanne, Switzerland

He represents Swiss and foreign clients, in complex inheritance cases with domestic and foreign aspects. Mr. Bogensberger has extensive experience in negotiating as well as litigating in front of the Swiss courts. He has counseled clients on succession planning, inheritance taxes, estate and trust administration, and fiduciary litigation (executors, banks, notaries, etc.). He also possesses vast experience in executor and probate matters as well as in trust Law.

Mr. Bogensberger’s practice also covers tax law (litigation and negotiation with the authorities) and family law matters. Furthermore, he frequently advises clients in commercial law and sports law, where he often acts as an ad-hoc clerk before the Court of Arbitration for Sport (CAS).

Séverine Roubaty

Attorney-at-law
Admitted to the bar of canton of Vaud (Switzerland)
Master’s degree in law, Magna cum Laude (Lausanne, 2012)

Area of expertise

Immigration law
Labour law

Professional experience

Séverine Roubaty studied law at the University of Lausanne and Zurich. In 2012, she earned a Master’s degree in Law from the Law School of the University of Lausanne. During her studies, she worked as a law clerk for the Labour and criminal courts in Lausanne. After graduating, Séverine worked as a law clerk for the public prosecution before joining as an associate the Parliament of canton Valais. At this position, she assisted the deputies, in particular by drafting new legislations. Subsequently, she passed her Bar examination in December 2017 after having interned at Sébastien Fanti in Sion. She also worked as an associate at the criminal sentence enforcement state department. In September 2018, Séverine Roubaty has  joined our law firm as an associate in the Immigration law and Labour law department.

Madhanga R. Wickramasinghe

Attorney-at-law
Admitted to the bar of New York
LL.M. in taxation (Boston University School of Law, 2018)
J.D. (New England|Boston, 2017)

Area of expertise

U.S. and international tax law

Professional experience

Madhanga Wickramasinghe is a US tax attorney. He used to work in a tax clinic and as a law clreck at the Massachusetts Appelate Tax Board.

To obtain more information about Madhanga Wickramasinghe, click here (visit our U.S. website).