Yuasa and Haraisone of the oldest and largest law firms in Japan. Ithas experienced teams for contentious and non-contentious intellectual property matters. The firm has patent attorneys in a wide range of technical fields such as chemicals, electricals and software.
Toshiaki Iimura, a former chief judge of the Japan’s Intellectual Property High Court, heads the firm’s legal division. Minako Matsuyama, Junichi Matsuo, Toru Miyamae and Osamu Hoshino are co-heads of the patent division. The trade mark and design division is led by Kazuhiro Nakata.
2023
"Their lawyers with PhDs in science propose appropriate strategies based on legal knowledge and a deep understanding of science (especially chemistry). Time management is appropriate."
"They give us very practical advice in a timely manner, based on their scientific knowledge."
2022 client testimonials
"They provide sound advice."
The IP team successfully represented a chemical company in the appeal at the IP High Court to overturn a decision by Japan’s Patent Office.The IP High Court rendered a judgmentin the client’s favour, revoking the Patent Office’s decision.