Dr. Sylvia Freygner, LL.M.

Dr. Sylvia Freygner has been a licensed attorney in Liechtenstein, Austria and Switzerland since 2007 and is an expert in European competition and international tax law. For more than ten years, Dr. Freygner has specialized in trademark law, vertical distribution channels, as well as concession and licensing models. Further, Dr. Freygner focuses on tax arrangements regarding assets, companies and international licensing systems. She also lectures in the Masters Program in International Tax Law at the University of Vaduz.

As a certified expert in fiscal criminal law, Dr. Freygner provides clients with professional and empathetic support in sophisticated and challenging fiscal criminal cases.

For the last five years, Dr. Freygner has led an independent research institute in Vienna that addresses topics related to European competition, liberalization, and privatization of state services.

In establishing the first Public Social Responsibility Institute for government services in Europe, Dr. Freygner initiated a new school of thought in the field of European business, competition, and procurement law. The resulting Public Social Responsibility Charta and the Public Social Responsibility Code provides the impetus for a European dialogue with all stakeholders. Furthermore, Dr. Freygner supports the Committee of the Centre of Excellence for the Public Economy, Infrastructure and Public Service e. V. at the University of Leipzig.

In 2017, she completed the Course on Strategic Leadership held by the Austrian Ministry of the Interior.

Firm Overview:

In 2007, Dr. Sylvia Freygner founded FREYGNER ADVOCATUR in the heart of Vienna. She continues to work as an independent attorney and personally intervenes on behalf of her clients’ concerns. The primary focuses of her law firm are international and cross-border tax law, especially intellectual property and European competition law as well as international company law. In the field of fiscal criminal law, FREYGNER ADVOCATUR has established a name for itself in leading and internationally recognized cases.

FREYGNER ADVOCATUR is very well-versed in fiscal matters in Liechtenstein, Switzerland, and Austria, particularly in connection with intellectual property and licensing vehicles such as IP Boxes, that offer very attractive models for tax structuring. With our comprehensive know-how we assure best possible solutions to meet your and your clients’ individual requirements.

Our passion is to consult and assist in the above-mentioned fields of business and we allow ourselves to take pride in the fact that FREYGNER ADVOCATUR is the only law firm offering a combination of IP and tax services in Liechtenstein, Switzerland, and Austria.

Our locations in Feldkirch, Stans, Vaduz, Zürich and Vienna reflect the international orientation of our law firm represented by Dr. Sylvia Freygner and her seven staff in collaboration with a wide-ranging network of experts.

Due to our international expertise it is our passion to support a worldwide clientele with experience and a distinctive strategic understanding.

Areas of Practice:

  • Corporate Tax Law
  • Antitrust Law
  • International Tax Law
  • IP Services
  • Intellectual Property Law
  • Intellectual Property Rights Law
  • Trademark Law
  • Patent Law
  • Private Client Law
  • Tax Advisory
  • Tax Law
  • International Tax Law
  • Trust and Estate Law
  • Competition Law
  • Franchise Law
  • Mediation
  • Blockchain
  • Accounting


FREYGNER Advocaturbuero AG

Mitteldorf 1
PO Box 759
9490 Vaduz
Principality of Liechtenstein
T + 423 377 99 60
F + 423 377 99 65
M +423 792 99 60
[email protected]

Limmatquai 1
8001 Zurich
CH – 8001 Zurich
M +41 79 245 09 76
[email protected]

Dorfplatz 12
PO Box 1021
6371 Stans
T + 41 41 622 00 96
F + 41 71 622 00 96
M +41 79 245 09 76
[email protected]
Dr. Sylvia Freygner

Nibelungengasse 13
1010 Vienna
T +43 1 512 33 93
F +43 1 512 33 93 50
[email protected]

Neustadt 45
6800 Feldkirch
T + 43 664 255 6404
[email protected]


Hannes Arnold

Hannes Arnold is a Senior Partner at Gasser Partner Rechtsanwälte.

Gasser Partner is an independent full service law firm in Liechtenstein. Being one of the leading law firms reaching from the beautiful and small country of Liechtenstein to international clients, the firm advises and represents national and international clients in all legal fields, in particular corporate and commercial law, banking law and dispute resolution cases and white collar crime. The expertise is built upon long-standing experience with fiduciary transactions (foundations, establishments, trusts, securing of assets) and legal representation of international clients in all legal fields. With offices and representations in Vaduz, Zurich and Vienna, the law firm has a big footprint in the region and excellent global links and regularly collaborates with other international law firms.


University of Innsbruck, Mag.  iur. (2000)
University of Innsbruck, Dr.  iur. (2003)
M.B.L.-HSG, University St. Gallen (2004)


Liechtenstein Bar Association
AIJA Association International des Jeunes Avocats
ELS European Law Society
Member of the Liechtenstein Arbitration Association


German, English

Hannes Arnoldʼs Publications:

Hannes Arnold, Pia Summer, Christina Preiner 2018
Getting the Deal Through – Private Banking & Wealth Management 2018

Dr. iur. Thomas Wilhelm

Thomas Wilhelm founded the law firm in 1992. In addition, he is an executive member of the Board of Directors of Codex Treuhand AG, which he founded in 1988. Prior to this, Thomas Wilhelm worked for an internationally-focused fiduciary group and law firm in Liechtenstein. He was awarded a doctorate in 1981 at the Law Faculty of the University of Innsbruck (AT).


– 1990, Liechtenstein


– International estate planning
– Company law, especially foundation and trust law
– Tax law

Wilhelm & Büchel Rechtsanwälte:

When it comes to legal questions, you are entitled to first-class advice from qualified experts. We advise private individuals as well as companies in Liechtenstein and abroad in all fields of Liechtenstein and European law.

High specialist expertise, commitment and reliability are the foundations of our philosophy and activities, day-in, day-out.

Every case is unique. We strive to identify the optimum solution to your concerns.

Dr Helene Rebholz

Helene Rebholz is a founding partner of König Rebholz Zechberger. Her key areas of practice cover investment law and corporate law.

Before joining the office she was managing partner of one of the oldest law offices in Liechtenstein. She studied law at the University of Innsbruck (Mag.iur. 2000, Dr.iur. 2006). She holds an LL.M. degree in European Law (Schloss Hofen 2002). She is admitted to the Liechtenstein (2004) and Austrian Bar (2005).

Her areas of practice are investment law, corporate law as well as banking and insurance, M&A, civil law and litigation.

She has co-authored a number of publications on litigation and arbitration in Liechtenstein and is the author of several articles on foundations and trusts was well as regulatory law developments.

Helene Rebholz is fluent in English and German and speaks French.

Firm Overview:

König Rebholz Zechberger Attorneys at law were founded as a spin-off of another Liechtenstein law office in January 2015. The desire to work on a more independent and client-focused basis led to the decision of the three founding partners to set up their own office. In contrast to many other law offices, König Rebholz Zechberger are not associated or indirectly connected with a trust-service provider or another financial intermediary.

Many years of practice in Liechtenstein with national and international clients, a well-established network together with the flexibility of a boutique office drive their desire to shape the perfect solution for each and every client.

Together the partners cover all major aspects of Liechtenstein law, with a clear focus on forensic matters (private client litigation) and regulatory law (banking, investment funds, etc.). Being specialists in their fields of material law and their experience in litigation and arbitration form the basis of their everyday work.

Markus H. Wanger

Markus Wanger is admitted in Liechtenstein, Vorarlberg (Austria), Frankfurt (Germany) and Brussels (Belgium). He is Fellow of the Chartered Institute of Arbitrators (FCIArb) and Arbitrator at the Court of Arbitration for Sports, CAS, Lausanne and Member of STEP (TEP).

He was Judge at the High Adminstrative Court, Liechtenstein, is member of the board of examination for lawyers and was lecturer for liechtensteinisches Gesellschafts- und Steuerrecht at the Hochschule für Technik und Wirtschaft, Chur.

He specialises in international Commercial Law, Arbitration, Taxation, Trust and Family Office services as well as Intellectual Property Law.

Markus Wanger is author of various publications and a frequent lecturer at international seminars and symposiums. He is the founder of the publications “Abhandlungen und Kommentare zum liechtensteinischen und internationalen Recht”. Some of his publications can be found under Download.

He is Managing Director of Wanger Trust Company Ltd. and inventor of the 3-D-Strukturalismus. Since 1994 he has been Honorary Consul of the Republic of Hungary in Liechtenstein

Firm Overview:

The Firm was founded in 1987 and is an International European commercial law firm domiciled in Liechtenstein.

Wanger Law has its own offices also abroad and together with the Wanger Group companies, Wanger Law offers legal, commercial and tax advice.

With the international network of more than 15’000 professionals, the client may expect international high-end services. As an international law firm, we act according the highest standards.

International companies as well as institutions are advised worldwide.

Wanger Law is the only Liechtenstein member of the ICC Counterfeiting Intelligence Bureau.

Since years Wanger Law has been awarded as one of the most respectable liechtenstein commerical firms.

Wanger Law is member of various associations such as Globalaw, Interlegal, Kreston and IBLC and was founding member of ICQM (Institute for Compliance and Qualitiy Management). We are recommended by leading law directories.

Markus Wanger is also Managing Director of Wanger Trust Company Ltd., an independent, experienced and highly accepted financial services company. The subsidiary in Chur/Switzerland is specialised in the fields of Trust Services, residents in Switzerland and in Intellectual Property.

The establishing and administration of international companies, foundations and trusts and family office services are conducted together with other professionals whenever needed.