
Homburger acts for private companies, public administrations and sovereign states across a variety of transactional and contentious issues in the public sector. The firm boasts deep know-how in regulated sectors such as energy, financially regulated markets and transport and is frequently involved in compliance matters and investigations. The team has impressive experience in acting in international arbitrations and proceedings involving foreign public authorities and sovereign states such as the People’s Republic of China. Marcel Dietrich co-leads the team with Mariella Orelli and has extensive experience in regulated sectors, typically in the field of competition law. Orelli leads the arbitration branch of the team and regularly acts as counsel in proceedings between foreign states and state-owned companies.
Key clients
- The People’s Republic of China (PRC)
- UBS
- Volkswagen
- Astara
- AMAG (independent Swiss importer of VW Group cars)
- Sonic Healthcare
- Alpiq
- Swiss Federal Council (Viola Amherd)
- A company of the Palestinian Investment Fund
Work highlights
- Represented PRC against AsiaPhos in an appeal before the Swiss Federal Supreme Court against an arbitral award in connection with investments in China.
- Represented a third-party bidder in public law matters in connection with Quickmail’s intended acquisition by Swiss Post.
- Advising Volkswagen on public law matters in relation to emission pools in Europe and Switzerland.
Lawyers

Practice head
The lawyer(s) leading their teams.
Marcel Dietrich, Mariella Orelli