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Jonas D. Gassmann LL.M.

Attorney at Law / Counsel

Jonas D. Gassmann is an Attorney at Law specialised in intellectual property law and white collar crime. Media law (including telecoms and advertising law), IT and data law are further key areas of his practice.

He has vast litigation experience in the field of trademark, design, patent, copyright and unfair competition law, and supports clients in particular in their fight against counterfeits and enforcement of rights online. His experience in the field of white collar crime is also very broad, including in the context of internal investigations. Jonas D. Gassmann represents both companies and individuals in proceedings before Swiss authorities and courts.

Jonas D. Gassmann also advises and supports clients outside of litigation, such as on branding and advertising strategies or by negotiating and drafting complex agreements in the media and entertainment sector (e.g. TV and SVOD license and distribution agreements and co-operation agreements). He has a profound understanding of the interactions between law, technology, and the economy.

He is an active member of several professional associations such as the International Trademark Association (INTA), the International Association of Privacy Professionals (iapp) and the Private Claimants Network (PCN). Jonas D. Gassmann is a Certified Information Privacy Professional Europe (CIPP/E) and holds an LL.M. degree in Media Law of the Queen Mary University of London. He regularly publishes and is a frequent speaker in his areas of expertise.

"Jonas Gassmann: a smart guy, to the point, and gave very practical advice."

The Legal 500 - 2025

"Jonas Gassmann's continuous pursuit of knowledge ensures that I can confidently entrust Swiss matters to him, knowing they are in expert hands."

The Legal 500 - 2025

"Jonas Gassmann is a trusted advisor on branding strategy, equally adept at negotiating and drafting complex agreements. His strategic mindset and deep expertise in digital matters give clients a distinct edge when navigating the online space."

WTR 1000 - 2026

"A tenacious advocate for his clients thanks to his litigation skills and exceptional courtroom acumen."

WTR 1000 - 2025

"Recommended in White-Collar Crime"

Leaders League: Switzerland - Best Law Firms - 2024

"Jonas Gassmann is very dedicated and helpful."

Legal 500 - 2023

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