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 SUGIMURA Logo 1 Japan

Common Gate West Tower 36th Floor
Kasumigaseki 3-2-1, Chiyoda-ku
Tokyo 100-0013

Tel: +81-3-3581-2241
Fax: +81-3-3580-0506

SUGIMURA International Patent & Trademark Attorneys is a leading intellectual property law firm in Japan which was founded in 1923. 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.

International Presence

SUGIMURA represents both Japanese and international clients pursuing patent, design, and trademark protection 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 Japanese 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 Palo Alto 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 Palo Alto and Tokyo offices work together seamlessly to deliver tailored solutions and around-the-clock service.

Key Contact(s)
  • Kenji Sugimura President2 Name: Kenji Sugimura
    Position: President
    Tel: +81.3.3581.2241
    Mr. Sugimura is the firm's President. As an experienced Japanese patent attorney and litigator specializing in mechanics and architectural engineering, he is actively involved in IP organizations, such as AIPPI, APAA, FICPI, INTA, and JPAA.
  • Tatsuya Sawada2 Name: Tatsuya Sawada
    Position: Partner (Palo Alto)
    Tel: +1-650-494-4946
    Mr. Sawada is the Executive Director of International Filing at our firm and the head of our Palo Alto branch office. His practice encompasses patent prosecution and litigation in the mechanical, electrical, optical, and food engineering fields.
  • Takayoshi Kawai Name: Takayoshi Kawai
    Position: Senior Manager
    Tel: +81.3.3581.2241
    Mr. Kawai is the Senior Manager of the International Department. His responsibilities include quality control and education of the translations and our translators, development of training materials and giving lectures to our clients about the importance of patent translation quality.