"Our expert staff specialized in both IP laws
and specific technologies provide quality professional services to our clients." Practice Areas Services


Reliable Services Based Upon Our Half-Century History
We are proud that, since its establishment in 1967, our firm has made sincere efforts to respond to our clients窶 requests with our quality services, and we are determined to continue to such efforts. We believe that good communications with our clients are the key to success.
Experts Specialized in IP Laws with Technological Expertise
One of our service principles is to bring more values to our clients窶 intellectual properties based upon legal and technical expertise as well as practical experience cultivated from our half century history as a patent law firm in Japan. All of our attorneys are specialized in intellectual property laws and are also knowledgeable in some specific technological fields.
Former Patent Office Examiners
In order to provide our clients with the best conceivable advice on their prosecution strategies, it is important to be aware of JPO examiners窶 thinking patterns. Some of the attorneys on our staff are former examiners at JPO and, with their knowledge and experiences, we can inform our clients of a suitable strategy to overcome an Office Action in an effective manner.




4th Floor, Sanno Park Tower 11-1, Nagatacho 2-Chome, Chiyoda-Ku Tokyo 100-6104, Japan
  • 3 minutes from Tameike-sanno Station (Tokyo Metro Ginza / Namboku Line)
  • 5 minutes from Kokkai-gijidomae (the Diet) Station (Tokyo Metro Chiyoda / Marunouchi Line)