• We shall contribute to the growth of the industries and societies by protecting intellectual properties and new businesses.

  • RYUKA shall find ultimate needs of our clients and propose the solution, thereby assisting our clients to succeed.

  • Inventors have the hints for new business.
    A patent firm shall bridge the thought to the realization by protecting patents.

  • To be a valuable existence,
    we pursue our professionalism.

  • RYUKA shall contribute to the societies by fully realizing the potential of the intellectual property rights.

NEWS

  • Awards
  • Patents, Trademarks and Designs
  • Firm Updates

About RYUKA

For more information about our history, mission and branch office.

Message from Managing Partner  Firm Overview  Philosophy and Mission  

Practices

For more information about our practices.

Patent 
Trademark 
Design 

Professionals

We are committed to thoroughly understanding our client business and utilizing our expertise to provide the top-level solutions.

Japanese Patent Attorneys 
U.S. Attorneys  Chinese Attorneys  PhD 

Contact Us

Please feel free to contact us if you have any questions or inquiries.

Questions on Japanese Patents, Designs, or Trademarks 
Other Inquiries 
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Career

We offer Invitation Program for overseas associates.