Isabelle Kleinveld
Lawyer
Isabelle is a lawyer at Brinkhof who works in the field of intellectual property, with a focus on patent litigation before both the UPC and the Dutch courts.
Experience & ancillary activities
Isabelle is an active member of ChIPs and Young EPLAW. In 2026, she won the Young EPLAW UPC mock trial. While studying for her Bachelor’s in Dutch Law at the University of Amsterdam, Isabelle spent an exchange semester studying US Intellectual Property Law at Loyola University in New Orleans. She subsequently obtained a Master’s in Information Law from the University of Amsterdam and a Master’s in Fashion Law (cum laude) from LUISS in Rome. Isabelle wrote her theses on the protection of medical solutions in a pandemic and the functionality exception in EU design law.
"Isabelle Kleinveld is one of those lawyers who instantly earns your trust. Despite being early in her career, her professionalism, speed, and grasp of complex patent issues are on par with seasoned litigators."
Legal 500 2026Some of the cases Isabelle has handled:
- representing Johnson & Johnson (Janssen) in UPC proceedings relating to CAR-T therapy;
- representing Sandoz in various cases, of which about anticoagulant rivaroxaban and MS-drug dimethyl fumarate (DMF);
- representing Agfa in UPC proceedings against Gucci relating to a method for printing on leather; and
- representing Oppo in a dispute about standard essential patents with Nokia.
