TOMOYUKI SERIZAWA Managing Partner

TOMOYUKI SERIZAWA　Managing Partner

PROFILE

Tomoyuki Serizawa is a Japanese patent and trademark attorney, qualified to represent clients in Intellectual Property (IP) matters before the courts. He is the founder and managing partner of IPStart. His practice covers all aspects of intellectual property law, with a particular focus on preparing and prosecuting patent applications before the Japan Patent Office (JPO), and handling foreign filings on behalf of Japanese clients. Tomoyuki has extensive experience in counseling in general intellectual property matters, developing strategic patent portfolios, due-diligence reviews of patent portfolios, and preparing patent infringement and validity opinions.

Prior Experience

Shin-Ei Patent Firm P.C. (2014-2022)
NGB Corporation, Patent Department (2006-2014)

Education

Tokyo Institute of Technology (M.E., Master of Engineering, 2006)
Yokohama National University (B.E., Bachelor of Engineering, 2004)

Memberships

Japanese Patent Attorneys Association (JPAA)
- Committee on Unfair Competition Prevention Law (2022-2024)
  - Vice-Chairman (2023-2024)
- Committee on IP support for SMEs and Startups (2023)
- Committee on Patent Law (2025)
Asian Patent Attorneys Association (APAA)
- Attended annual meetings: Bali (2016), Auckland (2017), New Delhi (2018), Taipei (2019)

Expertise

Patents (Domestic, Inbound and Outbound):
- Web 2.0 Technologies (Cloud Computing, UI/UX, Web applications, Internet of Things, AI, Generative AI)
- Web 3.0 Technologies (DeFi, NFTs, Metaverse, XR, Blockchain, and Cryptographic Digital Assets)
- Business Methods and Computer-Related Inventions
- Medical Technologies
- Mechanical Engineering
- Semiconductor Devices
- Optical Technologies (Lasers, Passive and Active Optical Devices)
- Automotive Technologies (Autonomous Driving, Vehicle Components)
Trademarks and Design Patents (including Madrid Protocol e-Filing and Hague Agreement e-Filing)

Professional Recognition

IAM Strategy 300 – The World’s Leading IP Strategists (2019-2020)
Global Law Experts (GLE) – Recommended Expert (2018)

PUBLICATIONS

Calculating Damages in Japanese Patent Infringement Cases, AIPF Newsletter, October 2019
Read the article
The Global Leader of Innovation – How Japan Aims to Lead Again, Lawyer Monthly, August 2017
Read the article

Languages

Japanese (native)
English

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