Kan Otani

Managing Attorney at Roppongidori Patent & Trademark Attorney

As founder and managing attorney of Roppongidori Patent & Trademark Attorney, Kan Otani works mainly with start-ups and venture capital-backed companies, as well as innovative listed companies.

Mr Otani specialises in patent prosecution for start-ups and focuses on the enforceability of patents, drawing on his extensive experience in patent litigation and disputes. He has worked with clients from Japan, Korea, the United States and France in litigation and disputes in a wide range of technical fields, including electronics, communication, software and optics.

Mr Otani also has experience in patent due diligence for billion-dollar M&A and licensing activities for standard-essential patents. He has dealt with all IP matters relating to the establishment and growth of start-ups.

Mr Otani regularly meets with new start-up companies and is well acquainted with the way that start-ups and venture capital companies operate. He endeavours to understand every client’s business fully and utilises his scientific background to grasp the technology at issue in every case. Mr Otani advises in trademark strategy as well as patent strategy, based on his understanding of each client’s business.

After studying applied physics at Keio University in Tokyo, Mr Otani studied at Harvard University and received his MSc in applied physics in 2005. His experimental research topic involved nanoscale materials science and condensed matter physics.

Mr Otani joined a patent prosecution firm in 2006 and then moved to a large general law firm where he expanded his practice to enforcement. He joined an IP boutique firm in 2012 and then founded Roppongidori Patent & Trademark Attorney in 2017.

Professional associations

  • AIPPI Japan
  • JPAA
  • JTA

Firm details

Roppongidori Patent & Trademark Attorney
Roppongi Hills North Tower 17F 6-2-31
Tokyo 106 0032

Contact details