Professionals
Patent and Trademark Attorneys
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.
HIROSHI HATTORI Partner
PROFILE
Hiroshi Hattori is a Japanese patent and trademark attorney, and a partner at IPStart. He joined the firm to contribute to and further its shared vision. His practice spans all areas of intellectual property, with a particular focus on preparing and prosecuting both domestic and international patent applications. Hiroshi is widely respected by clients and fellow attorneys alike for his exceptional drafting skills and the consistently high quality of his legal work. His technical expertise includes chemistry, biotechnology, and software. He is an active member of the Copyright Committee of the Japan Patent Attorneys Association (JPAA), where he focuses on research and policy discussions related to copyright law.
