Oscar Lamme

Oscar is a partner in the IP practice in the Netherlands. He has almost two decades of experience in international patent and other technology-related disputes. Oscar acts as a strategic adviser to clients, helping them navigate complex legal, commercial and technical challenges. With a background in industrial engineering, he is well placed to represent a wide range of multinational clients active in telecoms, electronics, biotechnology and the pharmaceutical industry.

His cases are mostly cross-border, and he often works at the intersection of different areas of law, such as patent law and competition law.

Oscar began his career in 2007 at a leading law firm in the Netherlands, where he developed a strong track record in patent litigation and advisory work for both national and international clients. In 2020, he joined Simmons & Simmons as a partner, where he continues to advise and represent clients in high-profile patent cases.

EPLAW, AIPPI

Oscar regularly publishes on patent law and frequently speaks at national and international congresses. He’s also a lecturer at Radboud University for the Professional Training Programme for Dutch Patent Attorneys, teaching the UPC component of the Patent Law module.

Advises and represents primarily multinational corporations, but also regularly acts for high-tech start-ups and other companies across the innovation spectrum.

Oscar lives in Amsterdam and in summer enjoys spending time boating on the Amsterdam canals with friends and family. He was always the neighbour kid people would call when a computer stopped working, and that practical interest in technology has never really left him. When generative AI tools such as ChatGPT became available, he was among the early adopters and has since been a driving force behind the adoption of AI within the firm. He values straightforwardness, clarity and a bit of dry humour in both professional and personal life.

Acted in the first main UPC proceedings before the Local Division The Hague, obtaining a multi-jurisdictional injunction and securing the first UPC decision on the doctrine of equivalence. Involved in the first preliminary injunction proceedings before the UPC Local Division The Hague in a dispute between Abbott and Sibionics over Glucose Monitoring Devices. Represented Apple in UPC Court of Appeal proceedings concerning the possibility of obtaining an EEO confidentiality regime. Acted for MSD in high-profile litigation against Ono regarding the blockbuster immunotherapy antibody drug Keytruda. Represented uniQure in the first patent dispute in the Netherlands concerning gene therapy. Acted for Xiaomi in its pan-European dispute with Philips over 4G technology.

Almost two decades of experience as a lawyer in international patent and other technology-related disputes.

University of Groningen

Master, Law & IT

2005 - 2006

University of Groningen

Bachelor, Law & IT

2003 - 2006

University of Twente

Bachelor and Master (Doctoraal), Industrial Engineering and Management

1998 - 2004

One to Watch in Dutch patent litigation

JUVE Patent rankings

2021

Who's Who Legal

IP 2025

2025

Silver band

IAM Patent 1000

2025

Next Generation Partner

Legal500

2025

Managing IP - Impact Case of the Year

UPC 2024

2024

Patent litigation, patent advisory, life sciences, technology, cross-border disputes, licensing

Netherlands, Unified Patent Court