Our Firm

About Us

Founded in 1902, YUASA and HARA is one of the oldest law firms in Japan. Our firm is also a pioneer in multidisciplinary practice, consisting of a legal division, a patent division, a trademark & design division and an accounting division. We have many professionals specializing in a variety of areas, including 13 lawyers, 53 patent attorneys, 3 certified public accountants, and 2 tax accountant (as of  April 1, 2025).

While each division functions independently as a legal firm, patent firm and accounting firm, our members also closely cooperate with each other to provide complete and multiple intellectual property services to our clients both in Japan and overseas.

Contact information of our firm is as follows:

Tel/Fax	TEL: 81-3-3270-6641 FAX: 81-3-3246-0233
Email address of each of our divisions	Law Division: law@yuasa-hara.co.jp Patent Division: patent@yuasa-hara.co.jp Trademark & Design Division: trademark@yuasa-hara.co.jp Accounting Division: accounting@yuasa-hara.co.jp

For further information about our members and their expertise, please refer to “People” and “Practices.”

Global Network

Since the early days of YUASA and HARA, when Dr. Kyozo Yuasa, a Barrister-at-Law and the founder of YUASA and HARA Tokyo office, started handling of international cases in 1920s, the provision of expeditious international services for our clients both in Japan and overseas has been the core value of our firm’s practice.

To sustain and enhance this capacity, we have always valued international cooperation with overseas law and patent firms and have established a strong global network.

We have built up alliances with overseas reliable law firms, especially in connection with corporate legal and IP cases, through TerraLex, covering more than 16,000 lawyers from over 100 countries, and Europe-based Unilaw.

In addition to these private alliances, there are always a number of members of our firm actively engaged in international associations relating to law and IP such as AIPLA, AIPPI, ALAI, APAA, FICPI, INTA, IPBA and LES, thus building close relationships with foreign lawyers and patent attorneys.