Walder Wyss AG

4.5 (50 reviews )

Zürich,

PRACTICE AREAS:: 34 THE BEST LAWYERS IN SWITZERLAND™ AWARDS:: 66

67 Attorneys

41 58 658 58 58 Visit Website Directions

About Walder Wyss AG

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.We are a dynamic law firm with flat management structures. The team of more than 280 legal experts – all of whom with a high level of professional qualifications, international experience and excellent knowledge in many languages – is augmented by approximately 100 employees working in support functions.Growth and a close relationship to our clients are the factors that determine our success. 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 a 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.

Our Attorneys (67)

Robert Von Rosen

Robert Von Rosen

(33)

N/A

Corporate Law Mergers and Acquisitions Law

Maurice Courvoisier

Maurice Courvoisier

(38)

N/A

Litigation International Arbitration

Ayesha Curmally

Ayesha Curmally

(7)

N/A

Alexander Gutmans

Alexander Gutmans

(35)

N/A

Corporate Law Mergers and Acquisitions Law

Reto Vonzun

Reto Vonzun

(36)

N/A

Corporate Law Mergers and Acquisitions Law

Philippe Nordmann

Philippe Nordmann

(35)

N/A

Corporate Law Labor and Employment Law

Marco Strahm

Marco Strahm

(34)

N/A

Corporate Law Private Equity Law

Adriano Antonietti

Adriano Antonietti

(8)

N/A

Banking and Finance Law Mergers and Acquisitions Law

Hubertus Hillerström

Hubertus Hillerström

(31)

N/A

Banking and Finance Law Venture Capital Law

Fouad G. Sayegh

Fouad G. Sayegh

(40)

N/A

Tax Law

Diana Akikol

Diana Akikol

(30)

N/A

Arbitration and Mediation International Arbitration

Nicolas Iynedjian

Nicolas Iynedjian

(38)

N/A

Real Estate Law

Olivier Nicod

Olivier Nicod

(32)

N/A

Corporate Law Mergers and Acquisitions Law

Jürg Schneider

Jürg Schneider

(38)

N/A

Information Technology Law Outsourcing Law

Alexandre Both

Alexandre Both

(31)

N/A

Mergers and Acquisitions Law Private Equity Law

Luc Pittet

Luc Pittet

(38)

N/A

Real Estate Law

Stefano Codoni

Stefano Codoni

(31)

N/A

Intellectual Property Law Technology Law

Theodor Härtsch

Theodor Härtsch

(38)

N/A

Banking and Finance Law Capital Markets Law

Johannes A. Bürgi

Johannes A. Bürgi

(8)

N/A

Banking and Finance Law Capital Markets Law

Ramona Wyss

Ramona Wyss

(32)

N/A

Public Law

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Office Locations

Zürich, CH Headquarters

Seefeldstrasse 123, Zürich 8008

41 58 658 58 58

Get Directions

Basel, CH

Aeschenvorstadt 48, P.O. Box 633, Basel 4010

41 58 658 10 00

Get Directions

Berne, CH

Christoffelgasse 6, Berne 3001

41 58 658 20 00

Get Directions

Geneva, CH

14 Rue du Rhône, Geneva 1204

41 58 658 30 00

Get Directions

Lausanne, CH

Avenue du Théâtre 1, Lausanne 1005

41 58 658 80 00

Get Directions

Lugano, CH

Via F. Pelli 12, Lugano 6901

41 58 658 40 00

Get Directions

Leadership Team

Florian Gunz Niedermann

lic. iur., LL.M., Attorney at Law, Partner

View Profile

Irène Suter-Sieber

Dr. iur., Attorney at Law, Certified Specialist SBA Employment Law, Partner

View Profile

Michael Isler

Dr. iur., Attorney at Law, Partner

View Profile

Katja Schott-Morgenroth

lic. iur. HSG, Attorney at Law, Notary, Partner

View Profile

Pierre-Alain Guillaume

lic. iur., LL.M., Attorney at Law, Partner

View Profile

Awards & Recognition

Featured Awards

PRACTICE AREAS: 34

THE BEST LAWYERS IN SWITZERLAND™ AWARDS: 66

All Awards

Top Listed in Switzerland with 68 lawyers
Top Listed in Switzerland in Corporate Law with 16 lawyers
Top Listed in Switzerland in Information Technology Law with 5 lawyers
Top Listed in Switzerland in Litigation with 11 lawyers
Top Listed in Switzerland in Mergers and Acquisitions Law with 15 lawyers
Top Listed in Switzerland in Public Law with 5 lawyers
Top Listed in Switzerland in Real Estate Law with 8 lawyers
Top Listed in Switzerland in Technology Law with 6 lawyers
Top Listed in Zürich with 42 lawyers
Top Listed in Basel in Corporate Law with 5 lawyers
Top Listed in Zürich in Information Technology Law with 4 lawyers
Top Listed in Zürich in Public Law with 4 lawyers
Top Listed in Zürich in Real Estate Law with 6 lawyers
Top Listed in Zürich in Technology Law with 4 lawyers

Notable Clients

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)

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Reviews

4.5 / 5

50 Reviews

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R

Ralph Thiel-Reichert

Feb 02, 2026

Highly recommend Walder Wyss AG for anyone needing expert Corporate Law help in undefined

If you're looking for someone who actually cares and will fight for you, go to Walder Wyss AG. They helped me out big time with my Corporate Law issue and kept me informed at every step of the process...

J

Juan Hand

Feb 02, 2026

Excellent legal representation provided by Walder Wyss AG for my Corporate Law case

Walder Wyss AG is fantastic and very professional. Don't hesitate to hire them if you're in undefined and need help. They really know their stuff and will go the extra mile to make sure you're taken c...

E

Estelle Nicolas

Feb 02, 2026

Many thanks to Walder Wyss AG for the hard work and dedication to my legal matter

Walder Wyss AG is fantastic and very professional. Don't hesitate to hire them if you're in undefined and need help. They really know their stuff and will go the extra mile to make sure you're taken c...

D

Dominick Flatley

Feb 02, 2026

Many thanks to Walder Wyss AG for the hard work and dedication to my legal matter

If you need a Corporate Law lawyer, Walder Wyss AG is the one to call. Great job and very responsive team. They kept me in the loop and always had time to explain the details of my case. I felt like I...

M

Merle Hyatt

Feb 02, 2026

Highly recommend Walder Wyss AG for anyone needing expert Corporate Law help in undefined

Honestly, I can't thank Walder Wyss AG enough for everything they've done for me. They really know their stuff when it comes to Corporate Law and it shows in the results. 10/10 would recommend to anyo...

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