Expert for Competition and Trademark Law, Data Protection Law, Building Law and Labour Law

Our clients particularly benefit from Mag. Dr. Mario Höller-Prantner’s knowledge in the areas of national and international competition and trademark law. His work experience abroad and the specialisation on the capabilities of registering three-dimensional signs as trademarks in the course of his dissertation as well as his specialist book on trademark law form a solid basis for practicably sustained solutions. This know-how allows him to enforce clients’ interests also within the copyright law which is standardised all over Europe.

For many years, Mag. Dr. Höller-Prantner has been counselling enterprises all over Austria concerning data protection law, which also includes medium, small and individual companies. His practical approach, combining entrepreneurial thinking with data protection, is an enormous advantage for them.

His expertise in building law is especially appreciated by building companies, ranging from medium-sized to Europe-wide operating enterprises. In this technically affine field, his long-term experiences regarding dispute resolutions in and out of court, really pay off. In close cooperation with his clients, technically complex issues can be clearly presentet to the court.

Together with his clients he creates sustainable as well as customized solutions for corporate law, labour law and general civil law. Additionally, he supports the clients with contract drafting and representing them in court.

Also clients from the art and culture section particularly appreciate his expertise, where a high level of sensitivity has to be typically met in this field.

Dr. Mario Höller-Prantner, born in 1981, studied law with doctorate degree at the Johannes Kepler University in Linz from 2000 bis 2005. In 2004 he completed a part of his studies at the University of Nijmegen in the Netherlands.

From 2004 to 2006, he worked as a research assistant at the civil rights institute of Johannes Kepler University Linz.

In 2006 he continued is legal career as a trainee lawyer at Prof. Haslinger & Partner.

After passing his bar exam “very successfully” in 2009, Dr. Höller-Prantner began his activities as a lawyer and partner in 2011.

Key Activities

  • Competition law
  • Trademark law
  • Copyright law
  • Media law
  • Internet legislation
  • Building law
  • Property- and real-estate law
  • Data protection law
  • Corporate law
  • Labour and social law
  • Tort and warranty law
  • Matrimonial and family law
  • Law of succession
  • Civil and contract law
  • Administrative law
  • Criminal law


  • Member of the Austrian Association for the protection of industrial property and copyright law, the international association for the protection of industrial property and the International League of Competition Law
  • Professional lay judge at the labour and social court
  • Lecturer for the Austrian academy of notaries on trademark law, design rights and copyright law and industrial property rights
  • Lecturer on competition law, labour law, general civil law and data protection law at the WIFI

Published Works

Markenrecht Kompakt, 2. Auflage
(Dr. Walter Müller, Mag. Dr. Höller-Prantner, Linde Verlag 2021)

Das markenfähige Zeichen im Österreichischen Markenschutzgesetz an Hand des dreidimensionalen Zeichens
(Mag. Dr. Höller-Prantner, Dissertation an der JKU 2008)

Verwechslungsgefahr bei Aufnahme einer Marke in ein fremdes Zeichen
(Glosse zu 4 Ob 165/06b: ÖBl 2007/29)

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