For many years our office is ranked as one of the leading Austrian firms for Intellectual Property and for the Law against Unfair Competition:


“Die IP-Boutique gehört mit ihrer ungebrochenen Prozesspräsenz zu den führenden Kanzleien im Marken-, Wettbewerbs- und Patentrecht.”


Noteworthy IP boutique with a strong focus on clients from the life sciences sector, as well as those active in the advertising, media and technology fields. Advises on unfair competition and data protection matters in the trade mark and patent sphere. Further experience in protection of design and personality rights.

One interviewee says: “They have excellent partners.”

David Plasser‘s broad IP practice includes matters concerning trade marks, patents, and the protection of designs and data protection. One interviewee recalls: “It was a very big case and he did a marvellous job.”

Lothar Wiltschek is a highly reputed practitioner boasting many years of experience in the market. He is focused on patent and copyright issues as well as employee invention and trade mark matters. Interviewee regard him as a “brilliant lawyer.”


Wiltschek Plasser is a relatively small IP law firm that is admired in the market for IP litigation. Founder Lothar Wiltschek is one of the leading IP litigators in Austria. Wiltschek is supported by David Plasser. Both practitioners are all-round IP litigators.

WTR 100:

Specialising in both IP and European law, Wiltschek is a discerning choice for commercially consequential disputes. Its lean size is key to its success: a streamlined structure and minimal overheads ensure that costs stay low while guaranteeing ample partner attention for each case. The team understands that each industry has different characteristics and requirements and adapts its approach to suit individual needs in the technology, telecommunications and life sciences sectors. Lothar Wiltschek and David Plasser are the main draws. Wiltschek has been navigating contentious terrain for over four decades, where his “extraordinary knowledge and experience give companies an edge over the competition”. Litigation is likewise the metier of Plasser, who has hammered out favourable results in copyright, trademark, patent, data protection and unfair competition disputes.

The Legal 500:

Wiltschek Plasser Rechtsanwälte handles IP and unfair competition matters. Most cases are handled directly by the two leading partners, Lothar Wiltschek and David Plasser. The former has a focus on patents, employee inventions and trade marks, whereas the latter is a key name in the protection of designs, personality rights and copyrights.


An IP boutique with a special emphasis on patents, Wiltschek Plasser is an agile, cost-effective outfit that dispatches mandates efficiently, but always with quality as the first priority. Though active across diverse industries and technical disciplines, the team is distinguished by its pharmaceutical nous: Lothar Wiltschek and David Plasser know the industry extremely well and strategically advise and litigate on behalf of some of its key players. “David is smart and fair and doesn’t fight over things that don’t matter – he plays hard, but plays by the rules.” Wiltschek is simply “one of the greatest minds in Austrian intellectual property.”