Spring direct naar de hoofdnavigatie of de inhoud
‘Creative thinking is the key to all innovation.’
Leo Jessen

Leo Jessen

  • Engineering
  • European and Dutch Patent Attorney, European Patent Litigator
  • Partner

Leo Jessen started his career as a patent attorney in 1992 with V.O. He studied Industrial Design Engineering and after passing his attorneys exams Leo studied law.

Leo’s clients are mainly in the field of mechanical engineering. His specialisms are consumer products, medical appliances and ergonomics.

Continue reading

Together with his clients Leo defines their IP strategy and where appropriate files, prosecutes and defends their IP rights worldwide. This also includes challenging third party rights, licensing and FTO studies.  Leo has a wide experience in patent cases before the court in The Hague and before the EPO.

Leo is actively involved in the training of new patent attorneys in Dutch, European and international patent practice. Furthermore he is an active member (chair) of the IP enforcement and Litigation group of FICPI, the International Federation of Intellectual Property Attorneys.

Working experience

  • Patent Attorney, V.O. (1992-present)
  • Freelance consultant in Ergonomics and product design (1989-1992)
  • Ergonomics Department, Volvo Cars (1989)

Education

  • MSc in Industrial Design Engineering, Delft University of Technology (1989)

Directories

  • “Leo Jessen is the go-to mastermind of cases on consumer products, ergonomics and medical appliances. He has also been entrusted with roles of seniority, acting as chair of the IP enforcement and litigation group of the International Federation of Intellectual Property Attorneys” (IAM Patent 1000, 2024)
  • Recommended individual (JUVE Patent 2020, 2021, 2022, 2023)
  • “Jessen combines his exceptional technical knowledge with a fine-grained understanding of patent law to devise strategies and enhance the commercial potential of patent portfolios” (IAM Patent 1000, 2023)
  • “Leo Jessen is the man to call for no-stone-unturned freedom-to-operate analyses and futureproofed protection strategies. A hugely experienced patent attorney, he plays a valuable mentoring role and is respected in the wider market as an excellent educator” (IAM Patent 1000, 2021)
  • Recognized as IP Star (2015, 2014, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024) by Managing Intellectual Property
  • Recommended Individual (IAM Patent 1000, 2020, 2021, 2022, 2023, 2024)
  • “Always performs excellently in the courtroom” (JUVE Patent 2020)
  • “Gifted in both prosecution and litigation”, Leo Jessen is “extremely good at building a case” (IAM Patent 1000, 2019)
  • “Peers praise Leo Jessen as a really excellent, strong attorney who’s been around for many years. Jessen prosecutes applications for a wide segment of devotees, who depend on his aptitude in filing, oppositions and appeals to keep their stress levels low throughout the patent lifecycle” (IAM Patent 1000, 2018)
  • “Heineken is one of the big names that engage Leo Jessen for his drafting and prosecution talents” (IAM Patent 1000, 2017)
  • “A key reference for companies in the consumer products sector, Leo Jessen has recently been advising Heineken on the expansion of its patent portfolio” (IAM Patent 1000, 2016)
  • “Leo Jessen is one of a rare breed, having spent his entire career at a single firm. With V.O. since 1992, the quick-witted strategist advises mechanical engineering clients on how to procure, defend and monetise IP rights” (IAM Patent 1000, 2015)
  • “Leo Jessen can address the myriad of concerns which arise in the mechanical engineering space” (IAM Patent 1000, 2014)
  • “Excellent communicator Leo Jessen and Bernard Ledeboer are the top mechanical engineering specialists there” (IAM Patent 1000, 2013)
  • “Leo Jessen is renowned for his creative approach, especially in relation to mechanical patents. Mechanical engineering is his field and he has profound knowledge of consumer products, ergonomics and medical appliances” (IAM Patent 1000, 2012)

Professional & Community Activities

  • FICPI: Secretary of the Netherlands section and member of CET Group 7, IP Enforcement and Alternate Dispute Resolution
  • AIPPI
  • AIPLA

Languages

  • English
  • Dutch
  • German
  • French

Also see these experts

Lutz Keydel

Lutz Keydel

  • European and German Patent and Trademark Attorney, European Patent Litigator
  • Associate
Herman Witmans

Herman Witmans

  • European and Dutch Patent Attorney, European Patent Litigator
  • Partner
More experts

News

Stricter EU rules against greenwashing

Terms like ‘climate-neutral’, ‘CO2-neutral’ and ‘sustainable’refer to product or company-related environmental statements that convey a “green” message directly or indirectly through words, graphics, images, symbols or a green colour scheme. To prevent consumers from being influenced by misleading ‘green’ claims in advertisements, a number of EU directives have been drawn up.Continue reading

High score in 2024 rankings IAM Patent 1000

We are proud to once again have an excellent rating in the 2024 rankings of the IAM Patent 1000: The World’s Leading Patent Practitioners. This guide, compiled by the British trade journal Intellectual Asset Management (IAM), ranks the top patent practitioners in key jurisdictions around the world. The 2024 rankings were recently announced.Continue reading

Capricorn invests in companies with impact

Capricorn Partners invests in innovative, growing companies whose technology has a positive impact on people and the planet. It does so as an independent manager of venture and growth capital and listed equity funds.Continue reading