Location: 1-5-1 Otemachi, Chiyoda, Tokyo, JAPAN
+81-3-6840-1536(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 has been selected as one of the top 10 firms (Tier 2) in the category of Trademark Prosecution by Asia IP

Apr 15, 2024 Our firm has been selected as one of the top 10 firms (Tier 2) in the category of Trademark Prosecution by Asia IP   We are pleased…

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

Mar 15, 2024 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…

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Our Firm Recognized as an Excellent Enterprise of Health and Productivity Management 2024 in the Category of Small and Medium-sized Corporations

Mar 12, 2024 Our Firm Recognized as an Excellent Enterprise of Health and Productivity Management 2024 in the Category of Small and Medium-sized Corporations    Asamura IP has been certified…

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Ryota Hara, a patent attorney at our firm, has been awarded the Lawyer Monthly Legal Award 2023 in the category Trademark Lawyer of the Year

Jan 9,2024 Ryota Hara, a patent attorney at our firm, has been awarded the Lawyer Monthly Legal Award 2023 in the category Trademark Lawyer of the Year   Ryota Hara,…

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The year end and new year holidays

Dec 27,2023 The year end and new year holidays   Our office and Japan Patent Office (JPO) are closed from December 29, 2023 to January 3, 2024 due to the…

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The Trademark Lawyer Magazine Annual 2024 features an article written by Asamura IP’s Kazutaka Otsuka

Dec 25, 2023 The Trademark Lawyer Magazine Annual 2024 features an article written by Asamura IP’s Kazutaka Otsuka   Kazutaka Otsuka, the Head of Asamura IP’s Trademark and Design Department,…

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Closed Dates – 2024 – JPO and ASAMURA IP P.C.

Jan 1,2024 Closed Dates – 2024–   JPO and ASAMURA IP P.C.     Closed dates of the Japan Patent Office (JPO) and ASAMURA IP P.C. in 2024 are as follows.…

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Asamura IP has been included once again as a Ranked Firm 2023 based on MIP Rankings

Oct 12, 2023 Asamura IP has been included once again as a Ranked Firm 2023 based on MIP Rankings   We are delighted to announce that once again Managing Intellectual…

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The Patent Lawyer Magazine: Our Firm is Once Again a Recipient of a Prestigious Award

Sep 29, 2023 The Patent Lawyer Magazine: Our Firm is Once Again a Recipient of a Prestigious Award   We are pleased to announce that our firm has been recognized…

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Japan: Summary of the IP Lump-sum Law to be enforced on April 1, 2024

Mar 26, 2024 Japan: Summary of the IP Lump-sum Law to be enforced on April 1, 2024   The following is a summary of the law to partially amend the…

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Japan: Trademark Consent System

Mar 1, 2024 Japan: Trademark Consent System   The Act for Partial Revision of the Unfair Competition Prevention Act was passed and promulgated as Act No. 51, June 14, 2023.…

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Japan: IP Lump-Sum Act Now in Effect

Jan 22, 2024 Japan: IP Lump-Sum Act Now in Effect   This is an overview of The Act for Partial Revision of the Unfair Competition Prevention Act (IP Lump-sum Act)…

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Japan: International Application Fees Revised

Dec 6, 2023 Japan: International Application Fees Revised   Due to the continuing depreciation of the yen, the fees for filing international applications with the Japan Patent Office (JPO) will…

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Japan: Act for Partial Revision of the Unfair Competition Prevention Act (IP Lump-sum Act) promulgated and the Effective Date Decided

Nov 27, 2023 Japan: Act for Partial Revision of the Unfair Competition Prevention Act (IP Lump-sum Act) promulgated and the Effective Date Decided   The Act for Partial Revision of…

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Japan: International Application Fees Revised

Aug 2, 2023 Japan: International Application Fees Revised   Due to the continuing depreciation of the yen, the fees for filing international applications with the Japan Patent Office (JPO) will…

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Japan: Act for Partial Revision of the Unfair Competition Prevention Act (IP Lump-sum Act) promulgated

Jul 13, 2023 Japan: Act for Partial Revision of the Unfair Competition Prevention Act (IP Lump-sum Act) promulgated   The Act for Partial Revision of the Unfair Competition Prevention Act…

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Japan: Relaxation of requirements for restoration of rights due to the expiration of a procedural period

Jun 30, 2023 Japan: Relaxation of requirements for restoration of rights due to the expiration of a procedural period   This section summarizes the relaxation of requirements for restoration of…

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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…

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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.

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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.

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Visitors

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

Vistors

Awards

We are proud to receive various IP awards every year.

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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.

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Our Services

We provide global expertise, grounded in history and heritage.

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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.

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Managing Board Members

Masahiro Asamura

Senior Managing Partner

Patent Attorney
Attorney at Law

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Ken Kanai

Managing Partner

Patent Attorney

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Kiyoshi Asamura

Senior Advisor

Patent Attorney

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Yoshiteru Mizumoto

Patent Attorney
Director
Mechanical & Electric Dept.

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Yoichi Inoue

Patent Attorney
Director
Chemical Dept.

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Kazutaka Otsuka

Patent Attorney
Director
Trademark & Design Dept.

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Yasuaki Yamaguchi

Patent Attorney
Director
IP Administration Dept.

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Patent Attorneys and Ph.D.

Akihiro Iwami

Patent Attorney
Senior Partner,
Mechanical & Electrical Dept.
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Hiroyuki Hashimoto

Patent Attorney
Senior Partner,
Mechanical & Electrical Dept.
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Yuko Tanaka

Patent Attorney
Mechanical & Electrical Dept.

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Akira Kitagawa

Patent Attorney
Senior Partner,
Mechanical & Electrical Dept.
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Kazuyuki Obinata

Patent Attorney
Advisor,
Mechanical & Electrical Dept.
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Katsunori Shirae

Patent Attorney
Advisor,
Mechanical & Electrical Dept.
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Mikio Kameoka

Patent Attorney
Senior Partner,
Chemical Dept.
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Yuichiro Asano

Patent Attorney
Senior Partner, Ph.D.
Chemical Dept.
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Mari Yuge

Patent Attorney
Senior Partner,
Chemical Dept.
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Hisashi Kanamori

Patent Attorney
Senior Partner,
Chemical Dept.

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Makoto Tatsuzuki

Patent Attorney
Senior Partner,
Chemical Dept.
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Hironobu Mizuno

Patent Attorney
Senior Partner,

Chemical Dept.

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Ryoji Mochizuki

Patent Attorney
Senior Partner,
Trademark & Design Dept.
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Takuhiro Shinoda

Patent Attorney
Senior Partner
Trademark & Design Dept.
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Yuri Ito

Patent Attorney
Trademark & Design Dept.
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Hirotou Matsumiya

Patent Attorney
Senior Partner,
Trademark & Design Dept.

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Hirotaka Nakayama

Patent Attorney
Trademark & Design Dept.
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Shuji Kikuma

Patent Attorney
Trademark & Design Dept.
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Hiroko Hirayama

Patent Attorney
Counsel,
Trademark & Design Dept.
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International Business Coordinator

Yulia Maruyama

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Jun Zhao

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Xinjia Zheng
Attorney

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Partner Lawyers
(Asamura Law Offices)


Masahiro Asamura

Attorney at Law
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Naoki Matukawa 

Attorney at Law
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Kenji Wada

Attorney at Law
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Haruo Goto

Attorney at Law
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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 Hamamatsucho station / Haneda airport)

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

(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 details  from the Rinkai Line Tennozu Isle Station to ASAMURA IP P.C..(PDF)

(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

Route details from Tennoz Isle station (Monorail/Rinkai Line) are available here.

Phone:        +81-3-5715-8651(rep.) 

:Email:     Inquiry Form