Firm Profile > Wenger & Vieli LTD > Zurich, Switzerland

Wenger & Vieli LTD

Fintech Tier 1

The team at Wenger & Vieli LTD is 'very polished and professional', with 'great know-how and many years of experience' in its ranks. Practice head and 'leading personalityMartin Hess has made 'strong contributions to the legal as well as regulatory community' with real 'DLT expertise'. Highlights included advising Lykke on the set-up of an online assets marketplace; assisting Seba CH with all fintech-related work and advice on regulating its digital framework; and structuring the collective investment schemes and venture capital financing for start-up CV VC AG. Tax specialist Barbara Brauchli Rohrer is another key contact and associate My Chau Bachelard handles ICO launches and token pre-sales.


I do not have a large breadth of experience with law firms generally; however, I have been very positively impressed by the lawyers we work with at Wenger & Vieli (W&V). As a firm, W&V includes all the requisite competencies under one “company roof”, making it very easy to access reliable expertise in new areas as it becomes necessary. For example, we wanted to embark on a new equity raise but did not have the necessary Swiss expertise in house. With one phone call, I got a recommendation to work with someone in their corporate law department and could establish a meeting within just a couple of days. So helpful! While remaining very polished and professional, the team is always positive, friendly and down to earth.

Our main contact at W&V is Martin Hess. His passion for the FINMA application he curated on our behalf is noteworthy. When combined with his DLT expertise and personal network, he and Stephanie Lienhard are unbeatable assets for our company. We expanded our contact to include the corporate law competency. In that area, we’ve very much enjoyed the pragmatism and immediacy of Beat Speck’s support.

Experience with Wenger & Vieli was positive, and most importantly we achieved the set goal (approval from a financial authority).

Urs Landolf was truly interested to understand our (unusual) business situation and needs.

Great know-how and many years of experience.

Martin Hess: leading personality in this area.

Deep understanding of new technologies allow for equally deep legal analysis, down to the very fundamental issues. Responsive and “no BS” legal advice relevant to commercial realities.

Martin Hess has shown consistency over many years. He digs into both the tech and the law. Strong contributions to the legal as well as regulatory community. My Chau Bachelard is clearly up and coming, equally motivated as consistently responsive.

Key clients



Swiss Digital Exchange

Fenice Holding SA (Monetum)

Cardano Foundation


Époque plus AG

Artemesium Masters AG

SEBA Crypto AG

Blockchain Valley Ventures

WiseCoin AG

Exfluency GmbH

SwissMount GmbH

MCO Technology

Servicebit Network AG

Healthcare and life sciences Tier 2

International pharmaceutical and medical devices companies, as well as mid-sized entities and start-ups instruct Wenger & Vieli LTD on transactions, life sciences law queries and pricing and reimbursement matters. Department head Frank Scherrer knows the latter area particularly well, in addition to having expertise in marketing authorisations, data protection and competition law. Beat Speck in Zug is the firm's key contact in M&A and private equity transactions in the field. Associates Marcel Boller and Andrea Schütz are also key members of the team.

Banking and finance: Zurich Tier 3

The banking and finance team at Wenger & Vieli LTD works closely with the firm's tax and corporate and M&A department to provides its clients with comprehensive advice. It is adept at handling regulatory matters, syndicated loans, debt capital issues and disputes. Bignia Vieli has a broad practice covering bank supervisory law, estate planning and commercial matters. She jointly leads the group with recently promoted partner Nicolas Bracher, who is particularly experienced in contentious matters. Martin Hess is a key name in the fintech space, while Peter Altorfer advises on bank supervisory policies. Andreas Hünerwadel is a key contact in transactions. Georg Zondler is also noted.


Wenger & Vieli’s services are always impeccable. The lawyers are very accessible, super fast with their answers, and they quickly understand the problems of their clients because of their business-oriented mindset.’

The team always provides excellent advice. It understands its client’s business and its key drivers. Most important is the group’s excellent feeling for risks and what can be achieved reasonably.’

Andreas Hünderwadel has a strong reputation in the Swiss market. He is very knowledgeable, experienced and can explain complex issues simply.

Bignia Vieli is a well-known bank supervisory lawyer, who really understands the key regulatory issues of a bank.

Nicolas Bracher is one of the rising stars at Wenger & Vieli. He combines his unique banking litigation expertise with a deep understanding of regulatory concepts.’

Peter Altorfer is highly regarded in the local legal community for his experience, understanding of the legal risks in banking and finance. He has an excellent network and is seen as a lawyer’s lawyer.

Martin Hess is one of the leading specialist in securities and payment services law.’

Key clients

Lykke Corp

Interhoerbiger Finance Ltd. (Treasury)

Danske Bank

Maerki Baumann & Co. AG

Falcon Bank

Partners Group

DBS Development Bank of Singapore, Singapore and Mumbai Branch

SIX Group

Utrust Switzerland Ltd.

Trans Adriatic Pipeline AG


Capital markets Tier 3

Wenger & Vieli LTD advises on venture capital and private equity transactions. Wolfgang Zürcher, who is based in Zug, handles private placements, IPOs and public takeovers. Beat Speck leads the transaction practice.

Commercial, corporate and M&A Tier 3

Wenger & Vieli LTD is an established adviser in the energy and manufacturing industries as well as in the private equity and venture capital space. Zug-based Beat Speck heads up the group and has considerable experience in private equity and venture capital matters. The firm has a broad corporate and M&A practice, and is a popular choice for mid-market transactions in Switzerland. Other noteworthy team members are Wolfgang Zürcher in Zug, who is also well versed in the capital markets area; tax expert Barbara Brauchli Rohrer and Christoph Schmid.


The team provides good quality commercial advice on acquisitions and investments, in particular Beat Speck. It has high knowledge and fast solutions.’

Key clients


Trans Adriatic Pipeline AG

AG für die Neue Zürcher Zeitung

Cross Equity Partners AG

Daimler AG

Jones Lang LaSalle GmbH

Hybris AG

Partners Group Holding AG


Emeram Capital Partner

Helvetia Insurances

Earlybird Ventures

Competition Tier 3

The competition practice at Wenger & Vieli LTD has a good coverage of the market, with expertise in reviewing, drafting and negotiating contracts, merger control filings, cartel investigations and compliance programmes. Practice head Urs Weber-Stecher is also active in international arbitration proceedings in the field, while Frank Scherrer knows the pharmaceutical sector particularly well. Michael Tschudin made partner at the beginning of 2020 and is another key contact.


Great team in Switzerland present in several major investigations of the Swiss Competition Commission.’

Michael Tschudin is the partner to go to for excellent competition law work. He has an excellent understanding of Swiss and EU competition law and his previous experience provides him an outstanding skill-set to perfectly serve his clients needs.’

Key clients

Oberholzer Bauleistungen AG

Dispute resolution: litigation Tier 3

Wenger & Vieli LTD is active in a variety of disputes, and is a popular choice for banks, insurance companies, and private clients. The team also has a good track record in employment and liability proceedings, where practice head Philipp Lindenmayer is particularly active. Other notable practitioners include Peter Altorfer, who handles disputes relating to bank supervisory law and estate planning matters; banking and media expert Marco Cereghetti; and Michael Huber, whose recent caseload includes a number of inheritance disputes. Nicolas Bracher was promoted to the partnership in early 2019.


Wenger & Vieli offers comprehensive services based on broad experience in litigation in national and international matters.  It has a well-known and established litigation practice.’

Wenger & Vieli always provides excellent advice. The team understands businesses and its key drivers. It is very responsive and always provides good value for money.’

Peter Altorfer is highly regarded in the local legal community for his experience, understanding of the legal risks in banking and finance. He has an excellent network and is seen as a lawyer’s lawyer.

Philipp Lindenmayer is a young, ambitious and talented litigator.

Nicolas Bracher impresses with his profound litigation experience and his sharp analytical and tactical mind.’

Leading firms: German-speaking Switzerland Tier 3

Wenger & Vieli LTD advises on corporate and M&A mandates, competition, healthcare and life sciences, and capital markets and fintech matters. Martin HessUrs Weber-StecherPascal HonoldChristoph Schmid and Georg Zondler are active practitioners. Managing partner Michael Mráz, Beat Speck and Barbara Brauchli Rohrer are other key names.


The team provides good quality commercial advice on acquisitions and investments.’

Key clients

Lykke Corp

Interhoerbiger Finance Ltd. (Treasury)

DBS Development Bank of Singapore, Singapore and Mumbai Branch

SIX Group

Oberholzer Bauleistungen AG

Trans Adriatic Pipeline AG

Cross Equity Partners AG

Daimler AG

Hybris AG

Blockchain Valley Ventures


Helvetia Wealth in Liquidation

Luminator Technology Group (LTG), Texas, USA

Tax Tier 3

Wenger & Vieli LTD has a comprehensive tax practice, providing tax support to the firm's other departments on transactions, as well as handling reorganisations and restructurings, VAT support and appeals. The client portfolio includes various national and international companies as well as private clients. Bruno Bächli leads the team; he has special expertise in tax disclosure programmes for onshore and offshore clients and succession planning. Barbara Brauchli Rohrer is another name to note.

Dispute resolution: arbitration Tier 4

The team at Wenger & Vieli LTD represents national and international clients in institutional as well as ad hoc proceedings. Practice head Urs Weber-Stecher has extensive experience in acting as counsel as well as arbitrator and is able to advise on distribution and licence agreements, corporate law and M&A. Daniel Girsberger specialises in private international law.


Wenger Vielli has a strong arbitration practice thanks to Urs Weber-Stecher and Daniel Girsberger and to strong connections in the business community.

This firm unites lawyers with both excellent legal knowledge and experience as well as a hands-on, pragmatic and client-oriented approach.’

Insolvency and corporate recovery Tier 4

Wenger & Vieli LTD is active in representing creditors of insolvent companies as well as debtors in insolvency proceedings. In cases of restructurings, the team works closely with the firm's M&A practice, and it has experience in cross-border mandates. Georg Zondler is well versed in debt enforcement and bankruptcy law, while Pascal Honold combines corporate and restructuring expertise; they jointly lead the team.

The firm: Wenger & Vieli Ltd. is a nationally and internationally active law firm with offices in Zurich and Zug. For more than forty years, we have been advising and representing national and international companies as well as private clients residing in or outside Switzerland primarily in all areas of business and tax law. Providing advice on a personal level and having small teams attend to our clients allows us to respond quickly and individually to our clients’ particular needs. We advise and represent our clients in a productive, goal-oriented and efficient manner.

Wenger & Vieli Ltd. employs around 60 experts who, in addition to their professional expertise, bring along the necessary team spirit and knowledge of human nature to ensure optimum cooperation with clients. Thanks to our size, the composition of our team of experts and state-of-the-art technical infrastructure, we are able to take on national and international engagements that are both labor-intensive and sophisticated. We advise our clients in German, English, French, Italian, Spanish, Czech and Russian.

The personal style will continue to shape our law firm in the future. Regardless of scope, we complete each engagement entrusted to us with the same commitment, where quality always comes first. We truly enjoy our profession and are open and transparent towards our clients.

Having maintained contacts over many years, Wenger & Vieli Ltd. has a network of relationships with law firms around the world. We are a member of Meritas, one of the largest international associations of law firms with members in all major cities of the world. In the area of tax law, Wenger & Vieli Ltd. cooperates with WTS Global, a worldwide network of selected consulting firms, present in more than 100 countries. Whenever necessary, our networks provide immediate access to local authorities and courts.

Department Name Email Telephone
Banks and financial services providers
Competition law
Construction and real estate law
Corporate and commercial law
Data law
Energy law
Financial market infrastructure law
Information technology law
Inheritance law and estate planning
Intellectual property law
Labour and employment law
Litigation and arbitration
Media law
Mergers and aquisitions
Notarial services
Pharmaceutical and health law
Restructuring and insolvency
Tax law
Venture capital and private equity
White-collar crime
Photo Name Position Profile
Mr Mike Abegg  photo Mr Mike Abegg
Dr iur Peter Altorfer  photo Dr iur Peter Altorfer
Ms Nina Attinger  photo Ms Nina Attinger
Mr Bruno Bächli  photo Mr Bruno Bächli
Ms Ursina Böni  photo Ms Ursina Böni
Mr Dominik Bürgy   photo Mr Dominik Bürgy 
Ms My Chau Bachelard  photo Ms My Chau Bachelard
Dr iur Michael Baier  photo Dr iur Michael Baier
Mr Martin Berweger  photo Mr Martin Berweger
Dr iur Marcel Boller  photo Dr iur Marcel Boller
Dr iur Nicolas Bracher  photo Dr iur Nicolas Bracher
Ms Barbara Brauchli Rohrer  photo Ms Barbara Brauchli Rohrer
Dr iur Marco Cereghetti  photo Dr iur Marco Cereghetti
Ms Meltem Cetinkaya  photo Ms Meltem Cetinkaya
Prof Dr iur Lorenz Droese  photo Prof Dr iur Lorenz Droese
Mr Marc Gerber  photo Mr Marc Gerber
Prof Dr iur Daniel Girsberger  photo Prof Dr iur Daniel Girsberger
Ms Regula Grunder  photo Ms Regula Grunder
Dr iur Andreas Hünerwadel  photo Dr iur Andreas Hünerwadel
Dr iur Roman Heiz  photo Dr iur Roman Heiz
Dr iur Martin Hess  photo Dr iur Martin Hess
Mr Pascal Honold  photo Mr Pascal Honold
Mr Sebastian Huber  photo Mr Sebastian Huber
Dr iur Michael Huber  photo Dr iur Michael Huber
Mr Marius Jenny  photo Mr Marius Jenny
Ms Michèle Joho  photo Ms Michèle Joho
Ms Claudia Keller  photo Ms Claudia Keller
Dr iur Urs Landolf  photo Dr iur Urs Landolf
Ms Stephanie Lienhard  photo Ms Stephanie Lienhard
Mr Philipp Lindenmayer  photo Mr Philipp Lindenmayer
Mr Stefan Müller  photo Mr Stefan Müller
Dr iur Michael Mráz  photo Dr iur Michael Mráz
Mr Patrick Näf  photo Mr Patrick Näf
Dr iur Daniel P Oehri  photo Dr iur Daniel P Oehri
Mr Flavio Peter  photo Mr Flavio Peter
Ms Lilith Ritzmann  photo Ms Lilith Ritzmann
Dr iur Andrea Schütz  photo Dr iur Andrea Schütz
Dr iur Frank Scherrer  photo Dr iur Frank Scherrer
Dr iur Christoph Schmid  photo Dr iur Christoph Schmid
Ms Valentina Schwarz  photo Ms Valentina Schwarz
Mr Markus Seglias  photo Mr Markus Seglias
Dr iur Beat Speck  photo Dr iur Beat Speck
Ms Deborah Sutter  photo Ms Deborah Sutter
Ms Sabine Taxer  photo Ms Sabine Taxer
Mr Bastian Thurneysen  photo Mr Bastian Thurneysen
Dr iur Michael Tschudin  photo Dr iur Michael Tschudin
Ms Bignia Vieli  photo Ms Bignia Vieli
Ms Alessa Waibel  photo Ms Alessa Waibel
Mr Marc Walter  photo Mr Marc Walter
Dr iur Beat Walti  photo Dr iur Beat Walti
Mr Daniel S. Weber  photo Mr Daniel S. Weber
Dr iur Urs Weber-Stecher  photo Dr iur Urs Weber-Stecher
Mr Florian Wegmann  photo Mr Florian Wegmann
Dr iur Christian Wenger  photo Dr iur Christian Wenger
Dr iur Wolfgang Zürcher  photo Dr iur Wolfgang Zürcher
Ms Nadine Zanetti  photo Ms Nadine Zanetti
Mr Georg Zondler  photo Mr Georg Zondler
Number of lawyers : 60
WTS Global
Other office : Zug
Contact : Dr Andreas Hünerwadel, LL.M. (managing partner)