Hirota & Associates to Japanese page TopicsRecruitingLinksSite Map
Practice AreasPatent AttorneysForeign Patent FirmsAbout UsAccess MapContact Us
HIROTA & Associates

  • Organized a joint seminar with D YOUNG & CO.
  • We have moved to a new office.
  • On January 27, 2012, the IP High Court issued a grand panel decision in an infringement suit in which Mr. Masanori Hirota of Hirota & Associates was engaged as a patent attorney for the defendant.  The grand panel decision was for the defendant and the issue in this case was whether a product-by-process claim is interpreted by the process limitation theory or by the product identity theory.



We handle a wide range of technical areas including biotechnology, pharmaceuticals, foods, chemistry, machines, computer(software), information processing, control system and AI(artificial intelligence).

PCT Applications

For international applications under the PCT, we provide a full range of services covering filing, deadline management, translation, and services necessary for the national stage application in each designated country.

Foreign Applications

For foreign applications under the Paris convention, we provide a full range of services from filing to patent registration and annuity management by cooperating with foreign patent firms.

Expert Opinions, Searches

We have many patent attorneys who have experience as both examiners and appeal examiners at the JPO, and they provide reliable services including searches and expert opinions.


We provide services for litigations to protect intellectual properties and for the execution of rights. We can also handle infringements by cooperating with attorneys specialized in intellectual property matters.


By cooperating with trademark experts, we will meet your expectations from consulting, filing to trademark registration.


By cooperating with design experts, we will meet your expectations from consulting, filing to design registration.


Our experienced staff provides services covering a wide variety of areas such as assistance for intellectual property activities, strategy for intellectual properties, licensing agreements, and litigations.