Thomas Sundien

Partner, Team Manager

European Patent Attorney

European Design Attorney


+45 24 25 52 99


Acting technical judge for IP matters at the Copenhagen Commercial & Maritime Court and at Denmark’s Eastern Appeal Court. Thomas started his IP career in 1988 and is especially skilled in European and US patent prosecution matters, as well as in design registration cases. He has gained much experience in prosecuting cases before the EPO opposition and appeal boards and is also regularly involved in patent infringement litigation and in patent licensing matters.

Thomas has special technical knowledge within the fields of oil drilling technology, packaging, conveying systems, medical devices, agricultural implements, shipbuilding, household equipment and building materials. During his career Thomas has represented numerous prestigious international clients, such as MAN, FMC Inc., Scandinavian Airlines A/S, Convatec/Unomedical A/S, Maersk/A.P. Møller A/S, Eva Solo A/S, Rockwool International A/S, Icopal A/S, Jorgen Kruuse A/S, Superfos Packaging A/S, Fritz Hansen A/S, Louis Poulsen Lighting A/S and Hardi International A/S.

In 2012-2016 the IAM Magazine has rated him for the “extraordinarily high standard of his mechanical patent drafting”, for “his varied experience and meticulous drafting skills that make him a popular choice for mechanical engineering assignments” and for being “a wellspring of insight and analysis on EP and US patent litigation”. One client says “..his extensive experience makes him able to contribute to an IPR strategy ensuring the best possible protection of our core technologies” (source: MIP IP Stars). Thomas is ranked by Managing IP as an IP Star for 2019 and as a recommended individual by IAM Patent 1000 for 2019. Thomas holds a M.Sc. in Structural Engineering (1988) and a B.Comm. (1992).

Areas Of Expertise

Patent Drafting
Patent Prosecution
Oppositions and Appeals
Patent Litigation Support
Freedom to Operate
Landscape Analysis
Prior Art Search
Patent Monitoring
Patent Strategy

Design Prosecution
Cancellation Actions
Conflict Handling and Enforcement
Monitoring and Watch

Competence Areas
Construction & Building materials
Industrial Design
Arts & Crafts