About Us


President Tomohiro Sakamoto

About Us

Since 2006, Sakamoto and Partners is a Japanese patent law firm that has been providing high quality and prompt services to our clients. (Sakamoto and Partners is a full-service intellectual property law firm with extensive experience across a wide range of technologies and businesses. Since 2006, we have been providing high-quality services to our clients in Japan and worldwide.)

As part of our legal services, we strive to foresee complications and propose solutions related to an intellectual property issues before these issues can become a problem. Additionally, we endeavor to propose alternatives for solving problems related to our client’s intellectual property rights. (Many of our attorneys have years of major law firm or industry experience, and others are former patent examiners with a keen insight on JPO requirements. Our talented team of seasoned professionals enables us to strategically guide our clients through the entire process while resolving any issues that may arise to secure the broadest protection for their intellectual property.)

President Tomohiro Sakamoto

Strengths of Our Firm

Unique 1

Unique 1 Strong support from our highly experienced IP specialists

Sakamoto and Partners employs several former Examiners and Appeal Examiners from the Japan Patent Office. Our staff brings a plethora of experience in examining Japanese patent applications and are highly knowledgeable with regard to the Japanese Patent Office examination procedures.

In addition, our law firm is able to not only aide in the acquisition of intellectual property rights, but also helps litigate in the event that our client’s patent, design, or trademark rights are infringed. We also strive to ensure that our clients are granted intellectual property rights to the fullest extent possible.

Unique 2

Unique 2 Our multilingual Chinese attorneys are available to assist you

Another strength of our firm is that Sakamoto and Partners employs Chinese, Korean, and United States patent attorneys who can respond to your inquiries in Chinese, Korean, and English.

Language barriers can create issues when prosecuting patent, design, and trademark applications in Japan; however, our law firm is able to efficiently and effectively help clients streamline the application process and minimize delays related to miscommunication. Many of our Chinese, Korean, and Japanese patent attorneys and IP paralegals are also fluent in English. We are also able to use our in house international staff to improve the quality of translations between Japanese and English, Chinese, and Korean.

Unique 3

Unique 3 Professional IP research and investigation team

Furthermore, Sakamoto and Partners has a highly specialized search team for patents, designs, and trademarks at our firm. Most patent firms in Japan do not employ specialized search teams to aid their clients like we do. Our law firm’s experienced and skilled search staff can conduct patent, design, and trademark searches with higher accuracy in a variety of technical fields. Sakamoto and Partners also specializes in patent invalidation searches, and as part of the invalidation searches, we monitor, oppose, and invalidate third-party proceedings, as necessary.

We hope you will use our services when dealing with your third-party observation, opposition, and invalidation proceedings, even if you do not have any prior art publications. Sakamoto and Partners is able to conduct invalidation searches in order to collect prior art publications needed to aide in filing third-party observations, oppositions, and invalidation proceedings with the Japan Patent Office.

Unique 4

Unique 4 Fastest and highest quality service

Finally, our Japanese patent lawyers have a vast amount of experience in filing patent applications at the Japan Patent Office for foreign clients. Our staff will carefully assist and explain Japanese patent, design, and trademark law as well as propose the best strategies for obtaining intellectual property rights even if you are not familiar with Japanese intellectual property law.

Our law firm is always on your side, providing meticulous representation, protection and enforcement of your intellectual property rights. Moreover, China, India and ASEAN countries have recently been experiencing rapid growth in their economies, and as Japan is close to these countries, our firm is able to swiftly aid our clients in these countries as the time difference is minimal.

We hope you will consider asking Sakamoto and Partners to become your new intellectual property hub in these developing Asian areas.

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