Our Firm

SUGIMURA was establised as “SUGIMURA International Patent & Trademark Attorneys” in 1923. Ever since the SUGIMURA has earned a reputation for high quality and is repeatedly ranked among the top Japanese patent and trademark firms. It has offices in Japan and the United States, providing convenient IP services to both domestic and international clients. As of March 1, 2017, Koji Sugimura, attorney at law, joined SUGIMURA’s management, and with this addition the firm has gained capability for handling legal works including law suits, evolving into an intellectual property law firm, “SUGIMURA & Partners”.


International Presence

SUGIMURA represents both Japanese and international clients pursuing patent, design, and trademark protection, as well as intellectual property related dispute resolution in Japan. Our clientele, ranges from single inventors and start-ups to well established academic institutions and multinational corporations from all sectors of the global economy, including automotive, aviation, transportation, food and beverages, consumer goods, fashion, sports and recreation, colleges and universities, chemical, software and hardware, electronics, e-commerce, biotechnology, pharmaceutical, medical, energy, agriculture, entertainment and media, construction, semiconductors, optics, telecommunications and manufacturing.


Customized Solutions

SUGIMURA delivers results-oriented solutions and offers customized services tailored to our clients’ needs. We ensure close collaboration among our practice groups in order to provide clients with comprehensive multidisciplinary patent and trademark protection across industry sectors. Our attorneys combine legal insight, technical expertise, and business acumen to deliver practical solutions and strategies for intellectual property protection in Japan.


Reputation for Quality

SUGIMURA has earned an international reputation for quality in Japanese IP prosecution and is repeatedly ranked among top Japanese patent and trademark law firms. Our patent and trademark attorneys possess expertise in virtually every technology sector. They are not only skilled in the nuances of intellectual property laws and regulations; they are also technical experts in virtually every industry. Our attorneys have years of experience working in-house at major corporations as researchers, engineers, and IP professionals. We also have attorneys who have served for decades at the Japan Patent Office (JPO). This combination of expertise allows us to understand the perspectives of corporations and patentees as well as the JPO, enabling us to deliver practical and effective solutions to further our client’s business objectives.


Around-the-clock Service

In order to better serve our foreign clients, SUGIMURA established a regional office in Palo Alto, California, the center of the famous Silicone Valley. The Silicone Valley office offers clients the personalized care of a boutique firm while drawing on both the resources of our Tokyo office and the strength of our global network. At our regional office, we are able to meet with clients regularly to develop intellectual property strategies to meet the client’s business objectives in Japan, discuss intricate technical and legal issues, and offer tutorials on Japanese patent practice. Our Tokyo and Silicone Valley offices work together seamlessly to deliver tailored solutions and around-the-clock service.


Community Involvement

SUGIMURA attorneys are active in their community, presenting on topics regarding Japanese IP practice at in-house client presentations, patent seminars, and law school classes. Our firm also publishes articles on Japanese IP practice in magazines distributed around the world.