Dr iur Günther Leissler > Schoenherr (Schönherr Rechtsanwälte) > Vienna, Austria > Lawyer Profile

Schoenherr (Schönherr Rechtsanwälte)
Günther Leissler photo

Work Department

Regulatory practice group





Günther Leissler has been with Schoenherr since 2006. He is a member of the technology & digitalisation group and heads the firm’s data protection & data privacy group. His practice focuses on regulatory issues, where he specialises in privacy, telecommunications and life sciences. He frequently advises Schoenherr’s clients on corporate data protection matters such as the implementation of global database projects, and he represents them in the required regulatory approval and registration proceedings. He also gives frequent advice on the implementation of web-based telecommunication services and on cross-border projects such as the implementation of whistleblowing systems or intra-group databases. Günther regularly reviews draft legislation in the areas of privacy and telecommunications law on behalf of the Austrian Bar Association and he is involved in legislative procedures with respect to health data and genetic data regulation in Austria.


German, English


University of Vienna, Vienna/Austria (Dr.iur. 2006)
University of Vienna, Vienna/Austria (LL.M. 2002)
University of Vienna, Vienna/Austria (Mag.iur. 1997)

Lawyer Rankings

Austria > Administrative law and public sector

Schoenherr (Schönherr Rechtsanwälte) fields a team of environmental experts and also exhibits proficiency across product compliance, gaming, pharma and public transport-related mandates. Noted by clients for offering a ‘full service on all aspects of public law’, the firm is especially recommended for its experience with environmental impact assessments, permission procedures, public procurement, and regulatory issues in the tech sector. Christian Schmelz heads the planning & environment team and is described as ‘the leading expert in his field’, while Bernd Rajal leads the firm’s public law group and Günther Leissler heads up the data protection & privacy group. Johannes Stalzer leads on public procurement matters, while Benjamin Schlatter‘s focus areas are environment, energy and tech.

Austria > Data privacy and data protection

(Leading individuals)

Günther LeisslerSchoenherr (Schönherr Rechtsanwälte)

At Schoenherr (Schönherr Rechtsanwälte), the data protection practice straddles both Austrian and EU data protection law, with extensive experience assisting clients on GDPR compliance and data security issues tied to international transactions. Under the leadership of the ‘fantastic’ Günther Leissler, the practice group has achieved notable successes before Austria’s data protection authority and the courts in matters concerning the processing of user data, cookies and data analysis, among other issues. Veronika Wolfbauer left the firm in February 2024.

Austria > TMT

Schoenherr (Schönherr Rechtsanwälte) acts for both established players and startups in the TMT space, whom it assists on matters tied to data protection, domain disputes and the protection of trade secrets, among other things. The practice is also present at the cutting edge of technological developments, providing services in regard to blockchain and digital assets, including cryptocurrencies and NFTs. Practice head Thomas Kulnigg is noted for his expertise in technology transactions, and also handles venture capital investments into tech start-ups. Günther Leissler heads the firm’s data protection team, advising on GDPR compliance in addition to multi-jurisdictional database projects. Veronika Wolfbauer is also well versed in these areas, and is the team member to note for matters concerning AI.