For many years our office is ranked as one of the leading Austrian firms for Intellectual Property and for the Law against Unfair Competition:
juve
This Viennese IP boutique, led by two partners, maintains a strong presence across nearly all areas of IP litigation. However, advisory work predominates in unfair competition law, IT and data protection. The firm’s reputation in patent litigation extends well beyond Austria, built on years of experience.
Chambers
Wiltschek Plasser is a noteworthy IP boutique with a strong focus on clients from the life sciences sector as well as those active in the advertising, technology and manufacturing fields. The team is particularly focused on contentious and non-contentious trade mark, copyright and patent law, with further expertise in unfair competition.
Lothar Wiltschek is widely appreciated for his longstanding expertise in the Austrian IP market. Clients benefit from his strength in handling complex patent, trade mark and copyright proceedings.
“Lothar Wiltschek is a great man and a grand seigneur.”
“Lothar Wiltschek is really intelligent.”
David Plasser is held in high esteem for his prowess in handling patent and copyright litigation, as well as enforcement proceedings. He offers further expertise in licensing agreements, unfair competition matters and trade mark issues.
“David Plasser is brilliant. He is very sensible, great to work with and very hardworking.”
Legal500
Wiltschek Plasser Rechtsanwälte takes on the spectrum of contentious IP matters, handling trade mark, copyright infringement and unfair competition proceedings, while also advising clients on the management and protection of their intellectual property. Lothar Wiltschek is frequently mandated in patent infringement and unfair competition disputes, with further expertise in handling claims brought by employees relating to their inventions. David Plasser combines his understanding of both hard and soft IP law with expertise in pharmaceutical and data protection law, allowing him to advise on complex issues concerning pharmaceutical products and medical devices.
WTR 1000
Brands are in safe hands with IP boutique Wiltschek Plasser and the group focuses on cultivating long-lasting client relationships and delivering results that neatly align with their overall commercial objectives. David Plasser and Lothar Wiltschek are versatile lawyers and master tacticians who are always impressive in their advocacy. Together they bring a wealth of experience protecting and enforcing trademarks in Austria.
Iam Patent 1000
Hands-on, cost-effective and bespoke solutions are the hallmark of Wiltschek Plasser. While the firm excels across various industries, it has carved a niche in the life sciences sector. At the helm are founding partners Lothar Wiltschek and David Plasser. IP veteran Wiltschek combines deep IP knowledge with commercial acumen. He is a prominent figure in the local market, leveraging his involvement in the global patent scene to stay up to date on the latest legal and policy developments. This expertise translates into compelling arguments in both the courtroom and negotiation room. Utilising a multifaceted approach, Plasser has a knack for distilling intricate issues into straightforward solutions. He couples this with his robust litigation skills to ensure clients receive top-tier representation.
Handelsblatt for Austria
In 2025, Lothar Wiltschek was named Lawyer of the Year in the field of intellectual property law by Handelsblatt for Austria (Best Lawyers: Austria’s best lawyers of 2025).