Engineering Insight
A mechanical engineering background and industry experience help us understand the technology behind your client’s invention.

Cita-Cita Patent Attorney Corporation
Engineering insight, clear English reporting, and transparent associate fees for your Japanese IP matters.
Your Japanese associate
We assist overseas IP firms and international companies with Japanese applications, prosecution, maintenance and recordals, keeping the next steps and costs clear.
A mechanical engineering background and industry experience help us understand the technology behind your client’s invention.
We explain issues, available options and required decisions in concise English so you can advise your client efficiently.
We confirm the requested work, fees and required documents before proceeding, with separate estimates for additional work.
Our services
Choose the service that matches your instructions, from a new filing to ongoing portfolio administration.
Direct filings, PCT national phase entry, office action responses and prosecution.
National applications, searches, office actions and registration.
Japanese design applications, searches and prosecution.
Freedom-to-operate searches, validity opinions, consultations and IP strategy.
Japanese utility model applications, technical evaluation reports and related support.
Japanese representation and responses to provisional refusals for international trademarks.
Japanese prosecution and provisional refusal responses for international designs.
Patent and design annuities, national trademark renewals, and changes of name, address or ownership.
Transparent associate fees
For overseas IP professionals. These examples show our professional fees; official fees and other applicable charges are additional.
per application
first class; JPY 15,000 per additional class
per year, per right
per registration, covering all classes
Translation, prosecution and other work outside the stated scope are charged separately. A bank/administration charge of JPY 4,000 applies per incoming remittance; consolidated remittances are welcome. Taxes, currency conversion and payment conditions are explained in Fees & Terms. International registration renewals through WIPO are quoted separately.
English-to-Japanese translation
Choose the option suited to your matter and budget. Both options include a Japanese patent attorney’s check.
per English word
AI-assisted translation with a Japanese patent attorney’s check.
per English word
Human translation with a Japanese patent attorney’s check.

Our professional
CEO / Managing Partner · Japanese Patent Attorney
With a background in mechanical engineering and more than two decades in IP practice, Takaaki Hayashi brings technical understanding and a practical business perspective to Japanese IP matters.
His experience includes mechanical design, corporate R&D and in-house IP. He has been registered as a Japanese patent attorney since 2003 and trained at a Washington, D.C. law firm in 2007.
Technical fields
Our experience includes the following fields. Please send a brief technical outline so we can confirm the fit for your matter.
Working with us
Tell us the application or registration number, requested work, relevant documents and any deadlines. For urgent matters, please state the deadline clearly.
We review the matter and confirm acceptance, required documents, costs and the proposed approach. Please await our express confirmation of acceptance.
We carry out the agreed work once instructions, documents and any required advance payment are in place, then report the outcome and next steps in English.
Let’s discuss your Japanese IP matter
Send a brief outline of the work and any deadlines. We will review your request and provide the next steps and a fee estimate.