As intellectual property professionals,
we support your business.

We offer a wide range of high-quality services to meet a variety of intellectual property requirements.

Strategic management of intellectual property

Oshima & Partners is a patent and trademark firm with an emphasis on international intellectual property law (patents, designs, and trademarks). Based in the center of Tokyo, the firm offers legal services to domestic and international clients from a wide range of perspectives based on our wealth of knowledge gained through many years of experience and up-to-date knowledge.

As intellectual property professionals, we maximize the value of our clients' intellectual property by providing a wide range of high-quality services.


ABOUT US 事務所案内

Since its establishment in 1983, Oshima & Partners has represented many of Japan's leading companies in intellectual property matters. At the same time, we have been providing intellectual property services to patent firms and companies worldwide. We will continue to support our clients' business in Japan and internationally from the aspect of intellectual property by utilizing our experiences gained over its long history.


IP Building, 2-20, Kanda-Jimbocho, Chiyoda-ku,Tokyo,101-0051,Japan

We are available for various consultations regarding intellectual property matters.
Please feel free to contact us.