Daan de Lange

Partner

Daan de Lange is a partner at Brinkhof and a seasoned European patent litigator and UPC representative. He specialises in international patent disputes, with a particular focus on UPC proceedings, where he represents clients in life sciences and FRAND disputes. Daan has earned a stellar UPC track record representing clients in all major UPC venues.

Complex, demanding and international disputes

Daan is a true litigator who is at his best in complex, demanding and highly technical proceedings. His practice covers both life sciences and technology disputes, including pharmaceutical and biotech patent litigation, medical technology cases and FRAND matters in the telecommunications sector.

IAM Patent 1000 describes Daan as “a brilliant and thorough lawyer who has earned his place” in the rankings. Managing IP / IP Stars notes that he delivers “high quality work” and has the talent to “win practically impossible lawsuits”. Legal 500 ranks Daan as a Leading Partner. Daan is also one of only 16 UPC representatives included in JUVE Patent’s prestigious list of recommended UPC litigators. In 2026, he was named Netherlands Patent Practitioner of the Year at the Managing IP EMEA Awards.

"Daan de Lange defends telecommunications companies in infringement cases, as well as acting for generic pharmaceutical companies in multi-jurisdictional patent nullity cases and on the launch of new products. He also increasingly represents clients in UPC litigation."

Chambers & Partners - Global Guide 2026

"Daan de Lange helped us develop some really strong arguments. "

Chambers & Partners - Global Guide 2026

"He can look at things from lots of angles and is an experienced litigator. "

Chambers & Partners - Global Guide 2026

"He can look at things from lots of angles and is an experienced litigator."

Chambers & Partners - Europe Guide 2026

"Daan de Lange helped us develop some really strong arguments."

Chambers & Partners - Europe Guide 2026

Experience & ancillary activities

Daan is editor of the Dutch intellectual property journal BIE and regularly publishes on international patent litigation. He teaches at the professional education program for patent attorneys and at the EPO Judges Training Centre. Daan is a frequent speaker at IP conferences and an active member of EPLAW and AIPPI.

Some of the cases Daan de Lange has handled:

representing Johnson & Johnson in UPC proceedings against a subsidiary of BMS before the LD Brussels;
representing DAF in UPC proceedings against Scania before the Baltic Regional Division;
representing Agfa in UPC proceedings against before the LD Hamburg and the Court of Appeal;
and OPPO as lead counsel in proceedings before the UPC in Mannheim and The Hague;
representing Amgen in patent litigation concerning its PCSK9 inhibitor Repatha® in Munich, Düsseldorf and the Court of Appeal.