Claude Thomann

Claude Thomann

Dr. iur., LL.M., Attorney at Law, of Counsel

Effingerstrasse 1
CH-3001 Berne

Tel +41 58 200 35 00

Fax +41 58 200 35 11


Barbara Ryser

+41 58 200 35 28

Claude Thomann is a senior professional with vast experience both in legal and entrepreneurial matters. Together with Franz Kellerhals he is one of the founders of the firm.
A member of the board of directors of listed companies and medium-sized businesses  and many years of his own entrepreneurial experience, have allowed Claude Thomann to acquire unique wisdom in commercial legal affairs. His favoured areas of practice include contracts as well as commercial and corporate law, litigation and arbitration. In particular, Claude Thomann advises clients on issues of employment law and collective labour law issues, an area in which he is a certified specialist.

Practice areas
  • Contract law with a particular focus on labour law (certified specialist in labour law)
  • Commercial law
  • Corporate law 
  • Litigation and arbitration
Practice groups
  • Litigation and insolvency
  • Employment law
  • 1980: Dr. iur., University of Bern
  • 1980: Université de Strasbourg
  • 1979: LL.M., University of Chicago Law School 
  • 1978: Bar Exam, Bern
Experience / Career
  • since 1980: Partner of Kellerhals Bern (Managing Partner 1990-1998)

  • German
  • English
  • French
  • Member of the Bernese Bar Association (Board Member 1985-1995)
  • Member of Union International des Avocats (UIA)
Further activities
  • Law lecturer at the Institute for Marketing and Business Management of the University of Berne (1998-2007)
  • Member of the Berne (BAV) and Swiss (SAV) Bar Associations, of the Economics Commission and Parliamentary Economic Group of the Berne Cantonal Parliament
  • Board member and manager of various employers’ associations
Publications and presentations
  • Claude Thomann, Der Schutz der Minderheit in der amerikanischen Kleinaktiengesellschaft aus schweizerischer Sicht, Diss. Bern 1980

  • Claude Thomann, Les institutions représentatives du personnel dans l'entreprise et leur pouvoir en matière économique, in: Le pouvoir économique des représentants du personnel dans l'entreprise, Bruxelles 1993

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