Roger Rudolph

Thomas Müller is a partner with the Banking & Finance practice in Zurich and advises banks, asset managers, fund managers, insurance companies and FinTech companies in complex regulatory matters and represents market participants before the Swiss regulatory authorities and as recognised representative before the SIX Swiss Exchange. He has been advising and managed a large number of e-money and payment services, cryptocurrency and blockchain projects. In finance, he focuses on corpora...

Counsel Simone Brauchbar Birkhäuser advises and represents clients in connection with contentious and non-contentious issues relating to trademarks, designs, copyrights, patents, data protection, unfair competition and advertisement. She has substantial experience in the drafting and enforcement of contracts for the transfer of intellectual property rights, especially license agreements. She further regularly deals with all due diligence relevant IP/IT and data protection aspects of corp...

Dominique Gemperli's main practice areas are banking & financing, capital markets and restructuring. She has more than 10 years of experience in advising Swiss and international financial institutions, industrial enterprises and other companies in project financing, asset financing, corporate lending, real estate financing and acquisition financing. She further assists clients in regulatory matters and general contract and corporate law. Dominique graduated from the University of Zurich i...

Micha Bühler is a top attorney recognized by Best Lawyers in the practice area(s) of International Arbitration and Litigation. Micha, who practices law in Zürich, Switzerland, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Micha is held by other top lawyers in the same geographic and legal practice area.

Managing Partner & Certified Tax Expert David Hürlimann’s practice focuses on tax law, in particular taxation of groups, merger & acquisition, corporate restructuring, international tax and tax accounting. Other areas of his tax practice include banking, executive compensation and tax planning for high net worth individuals.David Hürlimann graduated from the Universities Zurich and Geneva in 1998. After serving as a law clerk at the District Court of Zurich for two yea...

Partner Dr Patrick Sommer is Co-Head of the CMS Competition & EU Group. In this position, he jointly leads an international team of more than 170 competition lawyers. Patrick Sommer focuses on competition law, corporate law and M&A. Patrick Sommer has graduated from the University of St.Gallen in 1987 and was admitted to the bar in 1989. He has written his doctoral thesis on the relationship of Switzerland to the European Union and completed postgraduate studies at the Collège ...

Kinga M. Weiss is a partner and co-chair of the Private Clients team of Walder Wyss. She primarily devotes her time to domestic and foreign private clients, banks and family offices. Her areas of expertise are centered around both private clients and entrepreneurs in matters of inheritance law, including marital property law, relating to estate planning, business succession and execution of wills. Cross-border cases account for the bulk of her field of action. Besides, she also supports clien...

Partner Certified Specialist SBA Inheritance Law Tobias Somary heads the private client team of the firm. He specialises in the area of estate and succession planning, prenuptial agreements, estate administration, inheritance disputes, foundations & trusts, charities, art, private banking laws, and in- and outbound relocation. After having worked with a large Zurich law firm (Baer & Karrer) in 1998 and 1999, Tobias Somary joined CMS in 2000. In 2004 he completed post-graduate studies ...

Peter Straub is counsel in the Litigation & Arbitration Team. He is specialised in complex international commercial disputes and represents parties in both state court litigations and before arbitral panels. His main areas are disputes stemming from telecommunications, pharmaceutical products, construction, joint ventures, commodities trading, high end consumer goods, shareholders' positions, post M&A, etc. Peter Straub is sitting as an arbitrator in international arbitrations (ICC, S...

Hans-Jakob Diem is a corporate Partner at Lenz & Staehelin. He heads the firm's Corporate and M&A practice group and is the co-head of the Capital Markets practice group in Zurich. He has extensive experience in representing clients in a variety of corporate transactions, concentrating on mergers and acquisitions, capital market transactions, bank financings and corporate governance matters. Hans-Jakob Diem is regarded as a leading corporate practitioner in Switzerland and is regularl...