Patent Law

IP Law
Plesner has Denmark's strongest team of patent law attorneys. Our patent law experience, our availability, our business insight and our ability to understand and challenge technology enable us to provide the best patent law advice in Denmark.

Every year, we advise on and handle a significant number of patent cases. For example, Plesner represents a large number of original manufacturers in the pharmaceutical area, including nine out of ten of the largest pharmaceutical companies in the world.

Our services cover all aspects of patent law, particularly:

  • Cases concerning patent infringement and the validity of patents, utility models and SPCs
  • Cases concerning the ownership of inventions, including the rights of employees, researchers and co-inventors
  • Cases concerning the preservation of evidence
  • Preparation and negotiation of agreements, including R&D agreements and licence agreements
  • IP transactions
  • IP risk management
  • Strategic optimisation of global enforcement options
  • The EU Unified Patent Court

Many of our cases extend across borders, and we therefore collaborate with leading foreign patent legal advisors on a regular basis. These collaborations give us access to an international network that enables us to act smoothly, even outside Denmark.

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Ratings
Within Intellectual property, Plesner is a first tier firm.

"Top tier IP team, leading in terms of both size, skill, and accumulated experience. Remains the go-to firm in any IP dispute"

"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"

"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"
2025
The Legal 500
Plesner is listed in "Band 1" as regards Intellectual Property by Chambers Global and Chambers Europe.

"There is a high level of technical understanding in the whole team, and excellent litigation skills"

"The Plesner team is excellent"

"Plesner provides stellar support from partner level to paralegals"

"The lawyers have vast experience and expertise, and a rare ability to hit the spot with their assessments"

"The team are fast, business-minded and provide usable legal assistance"
2025
Chambers Global
Denmark Patent Disputes Firm of the Year.

Denmark Copyright & Design Firm of the Year.
2024 + 2025
Managing IP Awards
Within Intellectual property, Plesner is a first tier firm.

"Plesner’s IP team has exceptional technical understanding and in combination with their strong patent litigation foundation, they are unique in Denmark"
2024
The Legal 500
Plesner is listed in "Band 1" as regards Intellectual Property.

"The lawyers are very responsive and provide succinct advice"

"The law firm has strong expertise in IP matters. The lawyers are pragmatic and client-focused, with strong commercial acumen"

"Plesner has a very experienced team with an excellent reputation. It is impressive in its handling of patent litigation matters in the life sciences sector"
2024
Chambers Global
Within Intellectual property, Plesner is a first tier firm.

"Plesner are the leading patent firm in Denmark. They offer a golden service to all their clients. They are a very integrated team. They help each other, are open to discussion and listen carefully, outstanding in cross-border cooperation"

"Plesner is undoubtedly the top team in Denmark for IP, and in particular life sciences patents disputes. They are at the top of their game with excellent work, and dishing out excellent advice. Hugely collaborative and a pleasure to work with"

"The IP team at Plesner really works as a team. The team’s involvement of external parties such as patent advisers and the management of the court cases is very professional and efficient"
2023
The Legal 500
Plesner is listed in "Band 1" as regards Intellectual Property.

"Plesner is the most well-placed law firm for pharmaceutical patent litigation in Denmark. It has a very good understanding of the pharmaceutical industry"

"The team provides top-rated client service and commercial awareness"

"The depth of the team's legal knowledge is impressive"

"The lawyers are very responsive and swift in making sure that they confirm our requests"

"Plesner is one of the best law firms dealing with complex IP matters"
2023
Chambers Global
Denmark Patent Disputes Firm of the Year.

Denmark Trademark Firm of the Year - Law Firms.

Denmark Copyright & Design Firm of the Year.

Europe Patent Litigation Team of the Year.
2023
Managing IP Awards
As the only law firm in Denmark, Plesner is ranked in Tier 1 as regards Copyright & Related Rights, Patent Contentious, Trade Mark Contentious and Trade Mark Prosecution - Law Firms.
2022
IP Stars
Within patent litigation and transactions Plesner is a Gold Firm.

The IP market is unanimous in its praise for Plesner, a full-service outfit that practises at the very summit of the Danish patent litigation scene:

“What impresses me the most is the depth and breadth of its expertise as well as the size of the team, which is just full of immensely talented litigators”

“Plesner’s lawyers are exceptionally strong, highly skilled and without a doubt an excellent bunch”
2022
iam 1000

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