
Lenz & Staehelin is valued by clients for its position as ‘one of Switzerland’s strongest arbitration practices, backed up by the resources of a top-tier full-service firm’. The group regularly acts both for and against state-owned entities in international arbitrations. Harold Frey and Xavier Favre-Bulle leverage their ’exceptional advocacy skills and bright minds’ to oversee the work in Zurich and Geneva respectively; the latter also leads the firm’s sports law offering, and is thus well placed to handle arbitrations in that space. Counsel Martin Aebi‘s ever-increasing practice spans joint-development, construction, M&A and banking matters.
Legal 500 Editorial commentary
Testimonials
Collated independently by Legal 500 research team.
- ‘L&S is the most prominent Swiss firm when it comes to international arbitration. Their team has unique expertise and capabilities in the market, and can handle arbitrations across several different jurisdictions.’
- 'Harold Frey is a shrewd lead counsel, with unparalleled strategic and advocacy skills.'
- 'The team is very capable of handling the largest and most complex international arbitrations; dynamic, quick, strategic and a pleasure to work with.'
- 'Harold Frey is truly on the highest level; a true strategist, quick to think on his feet, excellent oral skills and a true leader.'
Key clients
- Clorox Spain
- International Olympic Committee
- State of Palestine
- thyssenkrupp Industrial Solutions
- thyssenkrupp Marine Systems
- World Anti-Doping Agency
Lawyers
Hall of Fame
The lawyers at the very top of the profession, widely known and respected by peers and clients for their longstanding involvement in market-leading work.

Leading partners
The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.
Leading associates
Leading associates with regular involvement in their team's key work, and recognition from peers or clients as being ones to watch.
Practice head
Xavier Favre-Bulle; Harold Frey
Other key lawyers
Martin Burkhardt; Thierry Calame; Daniel Tunik; Martin Aebi


