I.F. Partners is a Tokyo-based intellectual property (IP) law firm. The firm was founded by 3 patent attorneys in 1987 and grew to be the present size of nearly 30 members including 13 patent attorneys and 1 attorney-at-law who specializes in Japanese IP law. We serve companies in Japan and around the world, to help them successfully obtain and protect IP rights in Japan. We offer support in a comprehensive range of IP services including conducting prior art searches; drafting, filing and prosecuting applications of IP rights in and for Japan; IP enforcement work such as patent invalidation trials and patent infringement litigations. Our technical expertise covers wide range of technologies including chemistry, electrics, electronics and mechanics. We travel to Europe to meet with our clients, because we value face-to-face communication which enables us to better tailor our services to specific needs of clients.

  • Established 1987
  • Privately held company
  • 11-50 Mitarbeiter

Country Focus

  • Japan
    Location Type
    Eigener Firmensitz im Land


  • Intellectual Property Rights
    We obtain and protect IP rights for clients in Japan and around the world.
    Professional association