
Plesner’s large team of IP litigators is renowned for handling some of Denmark’s most high-profile IP cases. The firm has a strong trademark base, a leading trademark prosecution practice, and a prominent position in product copying matters. It advises major pharmaceutical originators and leading tech companies on copyright matters while excelling in IP-related M&A and non-contentious IP work. The team is also a leader in marketing, consumer, and e-commerce law. The practice is led by Kasper Frahm, who advises blue-chip clients on trademark law and administrative cases. Sture Rygaard has an impressive track record in patent and trademark litigation. Mikkel Vittrup focuses on IP and life sciences, particularly patent enforcement. Peter-Ulrik Plesner represents prominent national and international companies in patent, trademark, and marketing disputes.
Testimonials
Collated independently by Legal 500 research team.
‘Top tier IP team, leading in terms of both size, skill, and accumulated experience. Remains the go-to firm in any IP dispute.’
‘Mikkel Vittrup has very strong analytical skills and is an expert strategist.'
‘Plesner is the leading IP firm in Denmark. They represent most of the originators in the life sciences field. Their commitment to client service is unsurpassed. They are friendly and responsive.’
‘Sture Rygaard and Mikkel Vittrup are both standout individuals.'
‘Mikkel Vittrup has broad experience and deep strategic knowledge. Easily worked with and is focused on the matter at hand.'
‘Highly reputable team of patent practitioners, most well known for representing innovator companies in high profile disputes. Their reputation is richly deserved in the Danish patents sphere and they are also great collaborators and easy to work with.’
‘Super efficient team, very approachable, proactive, and give high-quality advice.’
‘Kasper Frahm provides strategic excellence, solid advice, flexible and practical solutions and a highly motivating collaboration.'
Key clients
- The A.P. Moller - Maersk Group
- Adidas
- British American Tobacco
- Ralph Lauren
- Burberry
- LEGO
- Novonesis
- Danske Bank
- Lundbeck
- Andel
- Deutsche Telekom
- Nintendo
- Hempel
- IO Interactive
- Zebra
- Joe & the Juice
- Procter & Gamble
- Sonion
- Pernod Ricard
- Aeven
- Monster Energy
- Too Good To Go
Work highlights
- Successfully represented Zebra A/S in infringement proceedings at the Danish Maritime and Commercial High Court.
- Successfully represented The Absolut Company AB in a main action against Spritfabrikken Danmark ApS and Premium Production ApS.
- Assists Adidas AG with oppositions in Denmark against Acer Incorporated's conversion of the EU trademarks "PREDATOR" word mark and figurative mark in Denmark which, among other things, included goods in class 25 for footwear except football boots.
Lawyers

Practice head
The lawyer(s) leading their teams.
Kasper Frahm