Firm Profile

Header Image for Walder Wyss Ltd.
Walder Wyss Ltd.


Seefeldstrasse 123
P.O. Box
Zürich 8034
41 58 658 58 58

Firm Details


Walder Wyss is one of the most successful and fastest growing Swiss commercial law firms. We specialize in corporate and commercial law, banking and finance, intellectual property and competition law, dispute resolution and tax law. Our clients include national and international companies, publicly held corporations and family businesses as well as public law institutions and private clients.

Around 220 legal experts make us the second largest law firm in Switzerland. The firm as a whole has seen impressive growth over the past year. Walder Wyss is the only law firm with 6 offices in Switzerland. Several partners and a lot of associates are predominantly dedicated to employment work. This differentiates Walder Wyss from other big law firms in Switzerland.

Walder Wyss was established in Zurich in 1972 and has since grown continuously. With offices in Zurich, Geneva, Basel, Berne, Lausanne and Lugano, we provide our clients with seamless one-stop-shop, personalised and high quality services in all language regions of Switzerland.

Our strong national and international network of correspondents and partners from a broad range of disciplines are selected according to the highest standards of professional competence.



Johannes A. Bürgi
Dr. iur., LL.M., Attorney at Law, Partner
Luc Defferrard
lic. iur., Attorney at Law, Partner
Michael Isler
Dr. iur., Attorney at Law, Partner
Reto Vonzun
Dr. iur., LL.M., Attorney at Law, Partner
Florian Gunz Niedermann
lic. iur., LL.M., Attorney at Law, Partner



Women: 2

Men: 54

Of Counsel

Women: 2

Men: 15


Women: 50

Men: 55

Other Lawyers

Women: 6

Men: 12

Management / Department Heads

Men: 6


Women: 6

Non-Legal Employees

Women: 93

Men: 21

Top Listed National Awards

  • Top Listed in Switzerland in Real Estate Law with 6 lawyers

Top Listed City Awards

  • Top Listed in Zürich in Information Technology Law with 4 lawyers
  • Top Listed in Zürich in Real Estate Law with 5 lawyers


  • Bayer (global life science company)
  • Credit Suisse (major Swiss bank)
  • Migros (largest Swiss retail company)
  • Pifzer (world's largest research-based pharmaceutical company)
  • UBS (major Swiss bank)

Firm Practice Areas

  • Antitrust/Competition Law
  • Arbitration and Mediation
  • Capital Markets Law
  • Construction Law
  • Corporate Law
  • Energy Law
  • Entertainment Law
  • Family Law
  • Financial Institutions
  • Information Technology Law
  • Insolvency and Reorganization Law
  • Insurance Law
  • Intellectual Property Law
  • Investment Funds
  • Litigation
  • Media Law
  • Mergers and Acquisitions Law
  • Outsourcing Law
  • Private Equity Law
  • Public Law
  • Real Estate Law
  • Regulatory Practice
  • Sports Law
  • Structured Finance Law
  • Tax Law
  • Telecommunications Law
  • Trade Law
  • Transportation Law
  • Venture Capital Law

Office Locations



Basel, Switzerland

Aeschenvorstadt 48

P.O. Box 633

Basel 4010


41 58 658 10 00

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Berne, Switzerland

Christoffelgasse 6

P.O. Box

Berne 3001


41 58 658 20 00

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Geneva, Switzerland

Rue d'Italie 10

P.O. Box

Geneva 1211


41 58 658 30 00

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Lausanne, Switzerland

Avenue du Théâtre 1

P.O. Box

Lausanne 1002


41 58 658 80 00

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Lugano, Switzerland

Via F. Pelli 12

P.O. Box 5162

Lugano 6901


41 58 658 40 00

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Zürich, Switzerland

Seefeldstrasse 123

P.O. Box

Zürich 8034


41 58 658 58 58

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