Harold Grüninger

Partner Marjolaine Jakob is the head of our insolvency and restructuring team of CMS Zurich. Her practice focuses on national and international insolvency law and related litigation. She advises clients in connection with insolvency proceedings and represents their interests in related proceedings before the competent courts and authorities. Marjolaine Jakob has broad experience in advising companies in restructuring proceedings. Further, she is a proven specialist in international insolvency...

Fabienne Limacher is a top attorney recognized by Best Lawyers in the practice area(s) of Tax Law. Fabienne, who practices law in Zürich, Switzerland, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Fabienne is held by other top lawyers in the same geographic and legal practice area.

Florian Gunz Niedermann is a top attorney recognized by Best Lawyers in the practice area(s) of Mergers and Acquisitions Law. Florian, who practices law in Zürich, Switzerland, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Florian is held by other top lawyers in the same geographic and legal practice area.

Thomas P. Müller is a partner with Walder Wyss. He advises Swiss and international corporate and public sector clients in all aspects of real estate and infrastructure law (project development, realisation, commercial leases, real estate transactions, financing), in the health care sector as well as in respect to the cooperation of the private and the public sectors (Public Private Partnership, public procurement, privatisations). Thomas P. Müller is a lecturer in the Master program...

David Vasella is a partner on the Information Technology, Intellectual Property and Competition team. He is the co-head of the Regulated Markets, Competition, Technology & IP team, together with Hans Rudolf Trüeb. He advises and represents Swiss and international companies in all industries and at all stages of growth on questions concerning data and technology law. He specialises in data use, negotiating data-related contracts, data security issues, cloud projects and IT contracts a...

Luc Defferrard, partner with Walder Wyss since 2001, has been active in the finance and legal industry for many years. He mainly advises clients in domestic and cross-border mergers & acquisitions, financing, restructuring as well as in real estate and capital market. Luc Defferrard particularly focuses on private equity and venture capital transactions. He is regularly recommended by Chambers, Legal500 and IFLR1000. Chambers Europe describes him as "always available" and "very strong neg...

Urs Schenker is very experienced in the areas of restructuring, financing, capital markets, M&As and company law. He has been involved in numerous national and international M&A transactions and public takeovers as well as financing, restructuring and other corporate finance transactions. He has published a number of books and specialist articles in his fields of expertise and is a regular lecturer at conferences in Switzerland and abroad. Urs Schenker completed his law studies in Zur...

Daniel Staffelbach is a partner in the Corporate & Commercial Team of Walder Wyss. He counsels Swiss and international clients in all sectors of health care & life sciences and in the insurance industry. His main areas of practice include company and contract law, public law and employment law. He advises his clients and also represents them in litigation. Born in 1966, Daniel Staffelbach studied law at the University of Berne (attorney 1993). He worked at the Administrative Law Panel...

Jan Ole Luuk is counsel in the Tax Team. He is an indirect tax specialist with a focus on Swiss and EU value added tax (VAT) and related customs and excise matters. He speaks and publishes regularly in the field of indirect taxation. Born in 1971, Jan Ole Luuk was educated at the Free University Berlin (First State Law Exam 1996) and the University of London (LL.M. 1997). He continued his legal education at the Court of Appeal Berlin (Second State Law Exam 2000). He graduated as a Certified T...

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...