Our distinguished patent attorneys and technical specialists with a wide range of technical backgrounds and legal expertise protect your innovations and provide the most effective strategies for your intellectual property in Japan.

Practice Areas

Prompt and accurate translation of documents including patent specifications and Office Actions by our highly-qualified technical staff
Comprehensive analyses and proposals for responding to Office Actions with a goal to obtaining the broadest protection for our clients
Appeals against Decisions of Rejection
We formulate and propose strategies to overcome Decisions of Rejection after rigorously verifying the examination status of counterpart applications.
Post-Grant Oppositions (ex parte procedure)
We handle Post-Grant Oppositions by forming a team consisting of multiple patent attorneys having the appropriate technical background.
Trials for Invalidation (inter partes procedure)
When a third party’s patent rights are exerted on our client, we can conduct an invalidation search to formulate strong grounds for invalidating the patent.
In contrast, if our client’s patent is the subject of an invalidation trial, we make every effort possible to maintain the patent by means of appropriate counterarguments.
Legal Opinions
Our patent attorneys and technical experts specializing in the technical area of concern provide legal opinions on invalidity, infringement, freedom to operate, etc. in cooperation with our search division.
Our experienced attorneys-at-law and technologically knowledgeable patent attorneys handle litigation cases to obtain satisfactory outcomes for our clients.


Proficient in a wide range of technical fields
・ Electrical Engineering, Electronics, and Software
・ Mechanical and Civil Engineering
・ Physics and Materials Science
・ Chemistry, Biotechnology, and Pharmaceuticals
Technical staff having a wide range of technical backgrounds
In-depth knowledge and experience in foreign IP laws and practice
Language proficiency (English, French, German, Chinese, and Korean)
All correspondence reviewed by native English speakers having technical and/or legal backgrounds
Tailor-made services for our clients concerning administrative procedures
Strict and reliable management of all due dates by an administrative team consisting of approximately 50 members who are experienced in handling overseas cases

Search Professionals
Practice Area