About Us

Our firm has provided quality intellectual property service for our domestic clients and overseas clients around the world since 1981.
We prosecute cases domestically and internationally, from Japan to overseas and vice versa, across a broad range of technical product fields.
We promise our clients the highest level of commitment and excellence, and have worked to establish efficient and prompt systems for responding to client requirements, while also allowing for personal and flexible responses.The rapid growth of our firm from a staff of three persons at its foundation to our present staff of nearly 200 is a testament to the confidence our clients have in our work.
We look forward to assisting you in protecting your intellectual property rights in Japan, and would be delighted to welcome you at our offices should you have occasion to visit.


The "TAIYO" in TAIYO, NAKAJIMA & KATO means "sun", a traditional symbol of radiance, energy and prosperity in Japanese culture.  The name of the firm in Japanese is Taiyo Kokusai Tokkyo Jimusyo, which literally translates as the Sun International Patent Firm.  We use the name Taiyo, Nakajima & Kato for convenience in our surnames of founding members for names of law firms.