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LL.M. (Columbia)
Partner // Attorney-at-Law
nathalie.voser@rothorn.legal
t +41 44 212 11 22
m +41 79 222 28 41
Nathalie Voser is a founding partner of rothorn legal. She has acted as counsel and arbitrator in a vast number of arbitrations under many major institutional rules. She has also advised and represented clients in arbitration-related state court matters (such as setting-aside proceedings before the Swiss Supreme Court) and in complex multi-jurisdictional disputes before Swiss and foreign state courts.
Nathalie Voser is well known for her expertise in engineering and construction, (renewable) energy related projects, oil and gas, pharmaceutical and automotive industries. She has considerable experience in research and development, distribution and license agreements, joint ventures as well as mergers and acquisitions. She is regularly appointed as arbitrator in both commercial and investment treaty arbitrations.
Who’s Who Legal Arbitration 2023 says that Nathalie is “A hugely impressive arbitrator” and “An obvious choice for complex and technical disputes”, that “Nathalie is strategic, efficient and thorough” and she is identified as “a leading individual” in the market. Who’s Who Legal Switzerland 2022 states that Nathalie is “very experienced as counsel and arbitrator”, that she is highly recommended for her “strong academic background” and “extensive skill and experience in construction disputes”. According to Who’s Who Legal Arbitration 2022, Nathalie is identified as “highly experienced” and an “extremely knowledgeable practitioner with extensive construction arbitration experience”. WWL ranked her as Thought Leader Global Elite for “Arbitration 2023” and “Construction 2023” as well as Thought Leader “Commercial Litigation 2022”.
Nathalie Voser is actively involved in the work of arbitral institutions. Nathalie was recently appointed to the Advisory Board of the Japanese Commercial Arbitration Association (JCAA). She currently serves as Vice-Chair of the ICC Commission on Arbitration and ADR, and is a member of the ICC Arbitration Commission for the Swiss ICC National Committee. In the past, she acted as Vice President of the London Court of International Arbitration (LCIA), as President of the European User’s Council of the LCIA, as Board Member of the Swiss Arbitration Association, as Board Member of the Vienna International Arbitration Chamber (VIAC), and Board Member of the Swedish Arbitration Institute (SCC).
Nathalie has played a major role in various arbitration-related projects such as the 2004 IBA Conflict of Interest Guidelines, the 2012 ICC Arbitration Rules revision, and the 2017 SCC Rules revision. Until early 2022, she co-headed the Taskforce of the IBA Arbitration Committee entrusted with the revision of the 2020 IBA Rules on the Taking of Evidence.
Finally, Nathalie is author of several arbitration-related articles and of a leading arbitration textbook, the 5th edition of which was published in February 2024.
Nathalie Voser graduated summa cum laude from the University of Basel and was admitted to the bar in Switzerland in 1990. She became a juris doctor with summa cum laude in 1992 and obtained an LL.M. with honors from Columbia University (New York) in 1994. In 2005, she received the venia docendi for private law, conflict of laws and comparative law, and in 2014, she was awarded the title of Professor in private law, arbitration law, private international law and comparative law by the University of Basel, where she regularly teaches courses in commercial arbitration and other areas of Swiss private law.
