YUASA and HARA is a leading Japanese law firm. We have established a strong international reputation on the basis of our comprehensive services. Specifically, we provide various business legal services, IP protection (prosecution and enforcement) and other transactional services. In addition, our firm offers efficient accounting and auditing services. Our strong and close cooperative partnership system has allowed us to successfully unite the professions of attorneys at law, patent attorneys and certified public accountants within one firm.

Our firm was established by Toyotaro Yuasa in Osaka in 1902. After retiring from the judiciary in the 1920s, Judge Yuasa began and developed a successful private practice with his son, Kyozo Yuasa, in international business transactions and intellectual property, which continued to thrive after the office moved from Osaka to Tokyo in 1947.

Our firm underwent several name and office location changes up to the mid-1960s, and it was finally named YUASA and HARA after Masuji Hara joined in 1967. Judge Hara was renowned for his contribution to the development of an industrial property division at the Tokyo District and High Courts. His extensive experience and expertise in this area considerably enhanced our firm’s practice and reputation. During this era, the accounting and auditing division was added as a third area in the firm, in order to assist clients with auditing and taxation matters.

After the retirement of Kyozo Yuasa and Masuji Hara, the next era of YUASA and HARA started in 1998 with the arrival of Toshiaki Makino, the former prestigious presiding judge of the IP Division of Tokyo High Court. In 2014 Toshiaki Iimura, who was chief judge of the IP High Court, joined the firm.

Organisation and expertise

YUASA and HARA is organised into four divisions: law, patents, trademarks and designs, and accounting and auditing. With its strong tradition of multi-professional disciplines, technical expertise and international vision, our firm has been at the forefront of cutting-edge areas such as anti-monopoly and competition; business method patents; computer software protection; corporate transactions and international investments for venture businesses; cross-border transactions; cyberspace transactions; domain name disputes; M&A; international litigation and alternative dispute resolution; international brand protection of trademarks and designs; IT and information and communications technology matters; and patent protection in biotechnology, mechatronics, computer science and other advanced technologies.

The trademark and design division is led by trademark attorneys Kazuhiro Nakata and Hiromichi Aoki. Partner attorneys Toshiaki Iimura, Osamu Suzuki and Kozo Yabe of the law division also assist various international brands and industries with trademark litigation and licensing transactions.

International networks and associations

Since the early days of YUASA and HARA, the provision of international services for both Japanese and foreign clients have been at the core of all our legal and IP expertise. To sustain and enhance this capacity, we maintain various international networks for our clients. Our firm’s members are active in international associations for law and IP professionals such as the Asian Patent Attorneys Association, INTA, the Japan Trademark Association and the AIPPI. These activities enable our firm to provide expeditious, seamless and reliable legal and IP assistance to our clients, wherever they come from and go to, through our international networks and associations.

Contact details

Shin-Otemachi Building
2-1 Otemachi 2-Chome
Tokyo 100-0004

Professional contacts

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