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About us

Supporting your intellectual property protection through our experience and technical knowledge.

Senior Partner

Yasuhiro Nakajima


Nakajima & Associates IP Firm originated from Nakajima International Patent firm, a private firm.
For nearly 40 years since the establishment of Nakajima International Patent Firm at 1985, Nakajima Intellectual Property firm has been supported the intellectual property business of domestic and foreign companies.
1985 was an era when intel announced the general-purpose 32-bit CPU 80386, and microsoft announced the version 1.0 of Windows. Even e-mail, let alone the Internet, is a distant dream. It was a long time ago, when I treated a 5-inch paper disc with great value, and was amazed at Japanese input on a PC9801.
Since the dawn of time, our office has worked on inventions in various fields by hammering the basic principles of microcomputers, circuits, and machines into our minds. As the times progressed, various derivative technologies were born, but I think the importance of the basic principle has increased compared to before.
To win a patent infringement lawsuit, it is essential to identify the composition of the allegedly infringing product.
However, such suspected infringement products are black boxes and the contents cannot be seen. The only clue to cornering a suspected infringing product whose contents cannot be seen is the basic principle of the product. In other words, it is important to formulate a logic that says, “If you want to do this kind of operation, it should be configured like this,” and write claims that match it. Nakajima & Associates IP Firm would like to consult with a patent attorney who knows the importance of such basic principles.

Administrative Philosophy

We have the utmost respect for intellectual property,
fruit of the wisdom of humankind,
we strive to contribute to the development of industry and culture
by acquiring rights to the satisfaction of our clients.

Guiding Principles

1. We shall constantly strive to hone our skills as specialists in technology and law.
2. Our entire office staff shall work together as a team to ensure client satisfaction.
3. We shall strive to benefit the world around us through our daily endeavors.

Office summary

Name Nakajima & Associates IP Firm
Establishment January 1985
Representative Yasuhiro Nakajima(director, patent attorney)
Address Yodogawa 5-bankan 6F, 3-2-1 Toyosaki, Kita-ku, Osaka, 531-0072 Japan
Telephone Japanese +81-6-6373-3246 / English +81-6-6373-4106
FAX +81-6+6373-3105
  • Technical Group
  • Accounting Group
  • Domestic Clerical Group
  • International Clerical Group
  • 1 Attorneys
  • 2 Technical Patent Specialists
  • 4 Administrators


From Osaka-Umeda Station on the Hankyu line: Take the Chayamachi exit, head east as far as Shin-Midosuji Blvd., then head north. Approx. 9 minutes on foot.
From Nakatsu Station on the Midosuji subway line: Take exit 4, turn left and head east along the road between Hearton Hotel Kitaumeda and Kawaijuku Osaka School. Approx. 3 minutes on foot.