Leaders Directory

WIPR Leaders is a one-stop guide to the leading IP practitioners in the world. The handbook lists over 2,500 lawyers across patent, trademark, and copyright practices. Following an extensive nomination period, our research team vetted the nominated lawyers for suitability by exploring their work. This meant looking at practice history, industry expertise and notable cases, as well as any additional activities, such as writing and teaching responsibilities, which have allowed the lawyers to shape and influence other and future IP practitioners.

Find a Leader

Bart Schweitzer

  • Senior IP Consultant
  • Novagraaf Nederland
  • United States

Luke Portnow

  • Trademark Attorney
  • Novagraaf Nederland
  • Netherlands

Marielle Zwart-Hoffer

  • Senior IP Consultant
  • Novagraaf Nederland
  • United Kingdom

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