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

Recent Update Events

Asamura Patent Office has been Awarded a Silver Certificate for Excellence in Health & Well-Being in 2022

May 19, 2022 Asamura Patent Office has been Awarded a Silver Certificate for Excellence in Health & Well-Being in 2022 At Asamura Patent Office, we have implemented initiatives to promote…

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Asamura Patent Office certified as a Telework Master Company

Mar 24,2022 Asamura Patent Office certified as a Telework Master Company   Asamura Patent Office has been certified by the Tokyo Metropolitan Government as a Telework Master Company. In order…

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Asamura Patent Office has been included once again as a Ranked Firm 2022 based on MIP Rankings

Mar 22,2022 Asamura Patent Office has been included once again as a Ranked Firm 2022 based on MIP Rankings   We are delighted to announce that for the third year…

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Ryota Hara, a patent attorney at our firm, has been awarded the Lawyer Monthly Legal Award 2021 in the category Trademark Lawyer of the Year

Mar 22,2022 Ryota Hara, a patent attorney at our firm, has been awarded the Lawyer Monthly Legal Award 2021 in the category Trademark Lawyer of the Year   Ryota Hara,…

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Asamura Patent Office recognized as an Excellent Enterprise of Health and Productivity Management 2022

Mar 9, 2022 Asamura Patent Office recognized as an Excellent Enterprise of Health and Productivity Management 2022    Asamura Patent Office has been certified as an Excellent Enterprise of Health…

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Our firm has been awarded Trademark Law Firm of the Year in Japan 2022 according to Global Law Experts

Feb 28,2022 Our firm has been awarded Trademark Law Firm of the Year in Japan 2022 according to Global Law Experts   We are pleased to announce that our firm…

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Discussion Meeting with the Patent Office Appeals Division

Feb 25,2022 Discussion Meeting with the Patent Office Appeals Division   A total of 12 people, including Mr. Katsura, Director of the Appeals Division of the Japan Patent Office, four…

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Closed Dates – 2022 – JPO and Asamura Patent Office

Jan 1,2022 Closed Dates – 2022–   JPO and Asamura Patent Office     Closed dates of the Japan Patent Office(JPO) and Asamura Patent Office in 2022 are as follows.  …

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The year end and new year holidays

Dec 24, 2021 The year end and new year holidays   Our office and Japan Patent Office (JPO) will be closed from December 29, 2021 to January 3, 2022 due…

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Taiwan : Mandatory submission of sequence tables under the provisions of WIPO standard ST.26 from August 1, 2022

Jun 29, 2022 Taiwan: Mandatory submission of sequence tables under the provisions of WIPO standard ST.26 from August 1, 2022   Although Taiwan is not a PCT Contracting State, in…

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Japan: International Application Fees Revised

Jun 9, 2022 Japan: International Application Fees Revised   The fees for filing international applications with the Japan Patent Office have been revised and will be partially increased effective July…

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WIPO: Submission of Sequence Listings in accordance with the provisions of WIPO Standard ST.26

Jun 8, 2022 WIPO: Submission of Sequence Listings in accordance with the provisions of WIPO Standard ST.26   On July 1, 2022, the amendments to the PCT Regulations and the…

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Singapore: IPOS introduces new filing system (IPOS Digital Hub) and fees

Arp 26, 2022 Singapore: IPOS introduces new filing system (IPOS Digital Hub) and fees   The Intellectual Property Office of Singapore (IPOS) has introduced a new filing system, the IPOS…

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On April 1, 2022, a number of patent and other legal amendments went into effect

Apr 1, 2022 On April 1, 2022, a number of patent and other legal amendments went into effect           Please see below for a summary 1.…

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Multiple dependent claims depending on other multiple dependent claims will no longer be allowed in Japan

Feb 28, 2022 Multiple dependent claims depending on other multiple dependent claims will no longer be allowed in Japan   Multiple dependent claims depending on other multiple dependent claims will…

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Japan April 1, 2022 Transitional measures for revision of patent, trademark registration, and renewal registration fees

Jan 28, 2022 Japan April 1, 2022 Transitional measures for revision of patent, trademark registration, and renewal registration fees   With the enactment of the Act for Partial Revision of…

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Japan’s Patent Law Revised: Major Draft Amendments

Mar 11, 2021 Japan’s Patent Law Revised: Major Draft Amendments   To cope with the changes caused by Covid-19, such as the demand for digital services and remote working conditions,…

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Changes to fee rates for patent, trademark and renewal registration from April 1, 2022

Oct 1, 2021 Changes to fee rates for patent, trademark and renewal registration from April 1, 2022 in Japan   There will be changes to fee rates from April 1,2022,…

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Client First

Asamura Patent Office, 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 Patent Office, p.c., family, swear to oblige by these beliefs and to do their very best to accomplish such beliefs.

Asamura Declaration

ASAMURA Patent Office, p.c. will contribute to the progress of the Intellectual Property systems in the world.

ASAMURA Patent Office, 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 Patent Office, 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 Patent Office, p.c. is trusted!

Trading countries are

Clients all over the world are  

established in

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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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 Patent Office 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 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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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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Directors

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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Yukihiro Ikeda

Patent Attorney
Director
  Patent Administration Dept.

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Yasuaki Yamaguchi

Patent Attorney
Director
IP Consulting Dept.

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Patent Attorneys and Ph.D.

Katsunori Shirae

Patent Attorney
Senior Partner,
Mechanical & Electrical Dept.
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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
Partner,
Mechanical & Electrical Dept.
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Hiroaki Kakinuma

Ph.D.
Mechanical & Electrical Dept.
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Kazuyuki Obinata

Patent Attorney
Advisor,
Mechanical & Electrical Dept.
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Takayuki Hatanaka

Patent Attorney
Advisor,
Mechanical & Electrical Dept.
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Katsuhiko Shimomura

Patent Attorney
Senior Partner,
Chemical 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
Partner,
Chemical Dept.
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Hironobu Mizuno

Patent Attorney
Chemical Dept.

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Hiroko Hirayama

Patent Attorney
Senior Partner,
Trademark & Design 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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Ryota Hara

Patent Attorney
Partner,
Trademark & Design Dept.

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Yuri Ito

Patent Attorney
Trademark & Design Dept.
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Hirotou Matsumiya

Patent Attorney
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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Mitsuo Okano

Patent Attorney,
Advisor
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.

Tennoz Central Tower                                

(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 Patent Office.
  *)   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 Patent Office.

(4) Others

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

Asamura Patent Office, 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