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Testimonials
Collated independently by Legal 500 research team.
‘The diverse international patent team includes both highly experienced attorneys at law from different jurisdictions and technically skilled patent attorneys from different fields of technology. This team is fully equipped to handle highly demanding and complex UPC cases in combination with litigation in the UK.'
'Oscar Lamme has ligated complex international SEP cases before the Dutch court. He is technically qualified and thus can easily grasp complex subject matter both in pharma cases as well as telecom cases.'
'Oscar has the ability to efficiently manage complex patent cases by delegating different topics to the people in this team who are best suited for the task, thereby making it a true team effort. ’
‘Thomas Gniadek is very diligent and provides good client service.’
‘A star patent litigation team with a good mix of legal and technical skills and in-house patent attorneys to support the litigators. Talent in the spotlight.’
‘Bas Berghuis van Woortman is a senior star litigator with an incredible track record; Oscar Lamme is one of the few litigators in the Netherlands with both a legal and technical background and the face of Dutch UPC; Sebastien Versaevel is intelligent, nice and great to work with; and Daisy Termeulen is an upcoming talent.’
‘Simmons & Simmons' Netherlands team are very experienced and professional, always providing us with suggestions and advice of high-quality.’
‘The partners and associates of Simmons & Simmons have excellent IP litigation experience. They put themselves in the client's shoes and think about how to maximise their clients' benefits.’
Key clients
- Bayer HealthCare
- Samsung Bioepis
- Netherlands Cancer Institute
- Serenity Pharmaceuticals
- UCB
- uniQure
- Zimmer Biomet
- Pharmathen
- Med-El
- HP
Work highlights
- Obtained two injunctions for Bayer over blockbuster drug Xarelto against Sandoz and Teva.
- Initiated the first UPC proceedings in the Netherlands for Green Tech scale-up Plant-e.
- Defended Pharmathen in cross-border dispute over Novartis’ blockbuster drug Sandostatin LAR.
Lawyers
Leading partners
The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.

Next generation partners
Junior partners with significant recognition from clients and peers in the market and key roles on multiple matters.
Practice head
Bas Berghuis van Woortman
Other key lawyers
Oscar Lamme; Thomas Gniadek; Johan Renes; Machteld Hiemstra