Location: Shinagawa, Tokyo, Jpan
+81-3-5715-8651(rep.)

We are proud of our 130 year history in IP and
          will continue to strive for excellence in our work

Recent Update Events

Our Firm Recognized as an Excellent Enterprise of Health and Productivity Management 2023 in the Category of Small and Medium-sized Corporations

Mar 9, 2023 Our Firm Recognized as an Excellent Enterprise of Health and Productivity Management 2023 in the Category of Small and Medium-sized Corporations    Asamura Patent Office has been…

Read more

Global Law Experts: Our Firm is Once Again a Recipient of a Prestigious Award

Mar 6, 2023 Global Law Experts: Our Firm is Once Again a Recipient of a Prestigious Award   We are pleased to announce that our firm has been selected for…

Read more

Our Firm Awarded Trademark Law Firm of the Year 2023 in Japan by the Global Law Experts

Feb 13, 2023 Our Firm Awarded Trademark Law Firm of the Year 2023 in Japan by the Global Law Experts   We are pleased to announce that our firm has…

Read more

Patent Attorney Kazutaka Otsuka Co-Publishes “Legal Practice of Trademarks: Analysis of Important Precedents and Promotion of Brand Strategy”

Jan 23, 2023 Patent Attorney Kazutaka Otsuka Co-Publishes “Legal Practice of Trademarks: Analysis of Important Precedents and Promotion of Brand Strategy”   Our firm’s Patent Attorney and Director of Trademark…

Read more

Closed Dates – 2023 – Japan Patent Office (JPO) and ASAMURA IP P.C.

Jan 1,2023 Closed Dates – 2023–   Japan Patent Office (JPO) and ASAMURA IP P.C.     Closed dates of the JPO and ASAMURA IP P.C. in 2023 are as follows.…

Read more

The year end and new year holidays

Dec 26,2020 The year end and new year holidays   Our office and Japan Patent Office (JPO) will be closed from December 29, 2022 to January 3, 2023 due to…

Read more

The Trademark Lawyer Magazine: Our Firm Awarded the Top 10 Trademark Law Firm in Japan 2022

Dec 13, 2022 The Trademark Lawyer Magazine: Our Firm Awarded the Top 10 Trademark Law Firm in Japan 2022   We are pleased to announce that our firm has been…

Read more

The Patent Lawyer Magazine: Our Firm Awarded the Top 10 Patent Law Firm in Japan 2022

Dec 13, 2022 The Patent Lawyer Magazine: Our Firm Awarded the Top 10 Patent Law Firm in Japan 2022   We are pleased to announce that our firm has been…

Read more

Our firm has been selected as one of the top 10 firms (Tier 3) in the category of Patent Prosecution by Asia IP

Dec 9, 2022 Our firm has been selected as one of the top 10 firms (Tier 3) in the category of Patent Prosecution by Asia IP   We are pleased…

Read more

Germany Deposits Ratification of the Agreement on the European Court of Unity (UPCA) , UPCA to (be issued June 1, 2023)

Mar 6, 2023 Germany Deposits Ratification of the Agreement on the European Court of Unity (UPCA) UPCA to (be issued June 1, 2023)           Germany deposited…

Read more

Japan: Operation of suspension of examination for divisional applications in which the original application is pending trial (effective April 1, 2023)

Mar 3, 2023 Japan: Operation of suspension of examination for divisional applications in which the original application is pending trial (effective April 1, 2023)   Regarding divisional applications for which…

Read more

EPO fee revision (from April 1, 2023)

Feb 28, 2023 EPO fee revision (from April 1, 2023)   The European Patent Office (EPO) has announced that it will revise its official fees effective April 1, 2023. Please…

Read more

The Cabinet Approves the Cabinet Order for Establishing the Effective Date for Partial Revision of the Patent Law and other related laws

Jan 26, 2023 The Cabinet Approves the Cabinet Order for Establishing the Effective Date for Partial Revision of the Patent Law and other related laws   Enacted in the 204th…

Read more

Unified Patent Court Agreement (UPCA)

Dec 27, 2022 Unified Patent Court Agreement (UPCA)       The Unified Patent Court Agreement (UPCA) system is a combination of the European Unitary Patent (UP) and the Unified…

Read more

Japan: International Application Fees Revised

Dec 20, 2022 Japan: International Application Fees Revised   The fees for filing international applications with the Japan Patent Office (JPO) have been revised once again and will be partially…

Read more

Japan: Copyright Decision on Octopus Slide

Nov 18, 2022 Japan: Copyright Decision on Octopus Slide   Asamura IP P.C.  Chinese Attorney Zheng Xinjia Copyright Decision on Octopus Slide      On July 19, 2022, the Supreme…

Read more

Japan: USPTO – JPO Collaborative Search Pilot Program Expansion and Simplified Procedure

Nov 14, 2022 Japan: USPTO – JPO Collaborative Search Pilot Program Expansion and Simplified Procedure   USPTO – JPO Collaborative Search Pilot Program Expansion and Simplified Procedure The Collaborative Search…

Read more

Japan: prepayment will be only by cash (bank transfer, etc.) from June 1, 2023

Oct 17, 2022 Japan: prepayment will be only by cash (bank transfer, etc.) from June 1, 2023     According to this Cabinet Order approved on October 14,2022, patent fees,…

Read more

Client First

ASAMURA IP P.C. hereby declares, as through the many generations (established 1891), we have always, to pursue the progress of IP systems in the world. To ensure our client’s satisfaction at all times.
All members of the ASAMURA IP P.C. family, swear to oblige by these beliefs and to do their very best to accomplish such beliefs.

Asamura Declaration

ASAMURA IP P.C. will contribute to the progress of the Intellectual Property systems in the world.

ASAMURA IP P.C. provides services based on knowledge and experience cultivated from over a hundred years, as a patent firm having the longest history and tradition in Japan.

ASAMURA IP P.C. will accurately grasp our client’s needs, and will always endeavor to offer our clients the satisfaction they seek.

See the proof of ASAMURA IP P.C. is trusted!

Trading countries are

Clients all over the world are  

established in

Our Value and What Makes Us different

For over a century, we have been providing our clients with excellent service based on knowledge and expertise. We have contributed to the evolution of intellectual property systems all over the world, and helped companies protect their inventions.

Details

A few things we’re great at.. 

Who We Are

We have been experts in intellectual property since 1891. Today, we use our history,heritage and experience to help companies around the world get the results they want.

Details

Visitors

Visitors to Asamura IP P.C. are listed here.

Vistors

Awards

We are proud to receive various IP awards every year.

Details

Our History

-First Patent Office In Japan-
The world was a very different place when ASAMURA IP P.C. was founded in 1891. When Mr.Saburo Asamura opened his office, telephones were only beginning to become widely commercially available. In the century that followed, the company has seen the technology transform the way people live their lives.
Thanks to the trust of our customers, we celebrated our 130th anniversary in 2021.

Details

Our Services

We provide global expertise, grounded in history and heritage.

Details

Our Corporate and Social Responsibilities

We do not just do great work for our clients, we also try to work for our community and the environment.

Details

Managing Board Members

Masahiro Asamura

Senior Managing Partner

Patent Attorney
Attorney at Law

Details

Ken Kanai

Managing Partner

Patent Attorney

Details

Kiyoshi Asamura

Senior Advisor

Patent Attorney

Details

Yoshiteru Mizumoto

Patent Attorney
Director
Mechanical & Electric Dept.

Details

Yoichi Inoue

Patent Attorney
Director
Chemical Dept.

Details

Kazutaka Otsuka

Patent Attorney
Director
Trademark & Design Dept.

Details

Yasuaki Yamaguchi

Patent Attorney
Director
IP Administration Dept.

Details



Patent Attorneys and Ph.D.

Katsunori Shirae

Patent Attorney
Senior Partner,
Mechanical & Electrical Dept.
Details

Akihiro Iwami

Patent Attorney
Senior Partner,
Mechanical & Electrical Dept.
Details

Hiroyuki Hashimoto

Patent Attorney
Senior Partner,
Mechanical & Electrical Dept.
Details

Yuko Tanaka

Patent Attorney
Mechanical & Electrical Dept.

Details

Akira Kitagawa

Patent Attorney
Partner,
Mechanical & Electrical Dept.
Details

Kazuyuki Obinata

Patent Attorney
Advisor,
Mechanical & Electrical Dept.
Details

Mikio Kameoka

Patent Attorney
Senior Partner,
Chemical Dept.
Details

Yuichiro Asano

Patent Attorney
Senior Partner, Ph.D.
Chemical Dept.
Details

Mari Yuge

Patent Attorney
Senior Partner,
Chemical Dept.
Details

Hisashi Kanamori

Patent Attorney
Senior Partner,
Chemical Dept.

Details

Makoto Tatsuzuki

Patent Attorney
Partner,
Chemical Dept.
Details

Hironobu Mizuno

Patent Attorney
Chemical Dept.

Details

Hiroko Hirayama

Patent Attorney
Senior Partner,
Trademark & Design Dept.
Details

Ryoji Mochizuki

Patent Attorney
Senior Partner,
Trademark & Design Dept.
Details

Takuhiro Shinoda

Patent Attorney
Senior Partner
Trademark & Design Dept.
Details

Yuri Ito

Patent Attorney
Trademark & Design Dept.
Details

Hirotou Matsumiya

Patent Attorney
Partner,
Trademark & Design Dept.

Details

Hirotaka Nakayama

Patent Attorney
Trademark & Design Dept.
Details

Shuji Kikuma

Patent Attorney
Trademark & Design Dept.
Details



International Business Coordinator

Yulia Maruyama

Details

Jun Zhao

Details

Xinjia Zheng
Attorney

Details


Partner Lawyers
(Asamura Law Offices)


Masahiro Asamura

Attorney at Law
Details

Naoki Matukawa 

Attorney at Law
Details

Kenji Wada

Attorney at Law
Details

Haruo Goto

Attorney at Law
Details

Access

  Our office is located at 22nd Floor,  at Tennoz Central Tower building, 5 minutes walk from “Tennoz Isle” station(Tokyo monorail or Rinkai LIne).
  You can enjoy nice view of  airplanes taking-off and landing at Tokyo(Haneda) International Airport.

(1) Taxi (from Tokyo Station/Haneda airport/Shinagawa Station)

JR Tokyo Station                15-25 min ( show this map to your taxi)
Haneda Airport                 15-30 min (show this map to your taxi)
JR Shinagawa Station        5-10 min  

(2) Tokyo Monorail (from Hamamatsu station / Haneda airport)


Get off at “Tennozu Isle Station” *) , exit the Central Gate, and walk for 3 minutes along the Skywalk pedestrian bridge.
  Please go here for the route from the Tokyo Monorail Tennozu Isle Station to ASAMURA IP P.C..
  *)   please take  a Rapid or Local train.  “Haneda Express” train  does not stop at   Tennozu Isle Station.

(3) Rinkai Line ( from JR Shinjyuku station/JR Shibuya station etc.)

Get off at “Tennozu Isle Station”, take Exit B, and walk  along the Skywalk pedestrian bridge.
  Please go here for the route from the Rinkai Line Tennozu Isle Station to ASAMURA IP P.C..

(4) Others

public bus or shuttle bus(free) are available from JR Shinagawa Station.
Please feel free to ask our staff. 

ASAMURA IP P.C.

Address:    Tennoz Central Tower 22F (reception), 2-2-24
                     Higashi-Shinagawa, Shinagawa-ku,
                   Tokyo 140-0002, Japan

Phone:        +81-3-5715-8651(rep.) 

:Email:     Inquiry Form