GDR 100 2023

Walder Wyss

Walder Wyss

Professional notice

Associates and senior associates10
Who’s Who Legal: Data nominees6
Percentage of lawyers in Who’s Who Legal: Data35%
Key clientsABB, Microsoft, Swisscard, Zurich Insurance, Migros, Galenica, Emmi and Cembra

Walder Wyss helps clients navigate market trends such as digitisation, data monetisation and shifts to platform-centred business models. Lawyers in the Swiss firm’s M&A, employment, litigation, healthcare, pharma, IT, tax and data protection departments – and more – frequently deal with legal issues that arise in those contexts.

It further advises on all aspects of data protection, including defending companies in regulatory investigations. Clients include Microsoft, ABB, Swisscard, Swisscom, credit card issuer Aduno, credit information company Intrum and Zurich Insurance.


Jürg Schneider in Lausanne is a key name who has a solid presence on the market. David Vasella in Zurich joined from Froriep in 2017; and partners Michael Isler and Hans-Rudolf Trüeb are important figures, acting respectively as current and former members of its management committee.

Work highlights

Vasella acts as the official data protection officer for Swisstransplant, the organisation handling several aspects of the organ donation process – including allocation, cost accounting and coordination of transport logistics. He is also retained by Swiss retailer Migros and pharmaceutical company Galenica to provide compliance advice in relation to the local and European data protection laws.

Isler is guiding Switzerland’s road infrastructure authority on the adoption of blockchain technology for data management in compliance with the local data regulations.

Client feedback

“Being ahead of the curve in knowing about the latest tech developments is a key differentiator in data privacy today, and the Walder Wyss team does this exceptionally well.”

“David Vasella is a leading practitioner in Switzerland. He is an outstanding lawyer, understands all aspects of privacy in Switzerland and has built an exceptional client base.”

Walder Wyss has been established in Zurich in 1972 and has grown continuously at record pace. Today we are one of the largest Swiss full-service firms, with more than 250legal experts, including 71partners and 21senior counsel and counsel.

Growth and a close relationship with our clients are key factors for our success. With six offices in Zurich, Geneva, Basel, Berne, Lausanne and Lugano, we offer our clients a personalised and high-quality one-stop shop for all legal and tax advisory needs across all language regions of Switzerland.

We are a modern and agile firm and see ourselves not as distant learned colleagues but as hands-on, commercially minded and solutions-driven partners to our clients with a quick, open and direct communication style. Our clients include national and international companies, publicly held corporations and family businesses as well as public law institutions and private clients.

We specialize in corporate and commercial law, banking and finance, technology and data, intellectual property, regulated industries and competition, dispute resolution and tax law. In the technology and data fields we have earned a reputation as one of Switzerland’s premier firms. We have been the first firm in Switzerland, and remain one of the few, with a strong practice in all data-heavy areas including privacy, IT, and investigations and white-collar. 

Our data protection team includes 7 partners and 11 additional fee earners across our offices. The team is headed by David Vasella, one of the most respected and experienced Swiss data protection lawyers. We advise clients from all sectors on data protection and privacy, including technology, financial services, health care, insurance, media, retail, food and drink producers, transport, energy, credit information, charities, sport, education, construction and real estate, and industry. We provide advice, help with compliance implementations, conduct investigations, and represent clients before courts and data protection authorities. A particular focus continues to be compliance with the GDPR by international groups headquartered in Switzerland, and by Swiss members of international groups, and we are now helping clients comply with the revised Swiss Data Protection Act that is scheduled to enter into force on September 1, 2023.


Unlock unlimited access to all Global Data Review content