aringer herbst winklbauer rechtsanwälte

Aringer herbst winklbauer rechtsanwälte is a full service commercial law firm. The advisory activities range from IT law, mergers & acquisitions, corporate law, real estate law,  to capital market and private trusts. From our base in Vienna, we advise national and international companies as well as private clients and represent them in court, before authorities and arbitration proceedings.

Our expertise in IT law covers all aspects of information technology, in particular outsourcing, software-licensing, software development and maintenance services. In recent matters, a strong focus lies on cloud services and data protection matters.


"Grillparzerstraße 5
A-1010 Wien
Telefon: +43 (1) 890 90 17-0
Telefax: +43 (1) 890 90 17-99

Stephan Winklbauer

Stephan Winklbauer is an expert in IT-law and real estate law. Regarding the latter he primarily counsels real estate developers and building contractors, however he also advises private investors. Stephan Winklbauer’s specialities are the acquisition and sale of real estates, their planning and construction as well as their renting and leasing. Concerning IT-law he counsels clients about software, outsourcing, and project contract law in relation to IT. For more than 20 years, Stephan Winklbauer supports international and national companies with the contractual structuring of their IT-projects.

In addition, Stephan Winklbauer's publication activities include numerous articles in IT and data protection journals.  


  • Bar Association Vienna
  • DGRI — German Association of Law and Informatics
  • ITechLaw — International Technology Law Association
  • Member of the Bundesvorstandes der Arbeitsgemeinschaft für Datenverarbeitung (ADV)
  • Member of Disciplinary Board of the Bar Association Vienna

German, English, Italian

What is the INPLP?

INPLP is a not-for-profit international network of qualified professionals providing expert counsel on legal and compliance issues relating to data privacy and associated matters. INPLP provides targeted and concise guidance, multi-jurisdictional views and practical information to address the ever-increasing and intensifying field of data protection challenges. INPLP fulfils its mission by sharing know-how, conducting joint research into data processing practices and engaging proactively in international cooperation in both the private and public sectors.