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

Recent Update Events

Japan’s Patent Law Revised: Major Draft Amendments (March 11, 2021)

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, the…

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Changes to fee rates for patent, trademark and renewal registration from April 1, 2022 (Oct 1, 2021)

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, which…

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Patent, trademark and renewal registration fees will be revised on April 1, 2022 (follow-up report) (Dec 22, 2021)

Dec 22, 2021 Patent, trademark and renewal registration fees will be revised on April 1, 2022 (follow-up report)   A Cabinet decision has been made to issue a Cabinet Order…

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Closed Dates – 2022 – JPO and Asamura Patent Office (January 1, 2022)

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)

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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Patent, trademark and renewal registration fees will be revised on April 1, 2022 (follow-up report) (Dec 22, 2021)

Dec 22, 2021 Patent, trademark and renewal registration fees will be revised on April 1, 2022 (follow-up report)   A Cabinet decision has been made to issue a Cabinet Order…

Read more

Multiple dependent claims depending on other multiple dependent claims will no longer be allowed in Japan (Dec 17, 2021

Dec 17, 2021 Multiple dependent claims depending on other multiple dependent claims will no longer be allowed in Japan    On December 15, 2021, the Patent System Subcommittee of the…

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Asamura Patent Office is featured in local news media (Dec 1, 2021)

Dec 1, 2021 Asamura Patent Office is featured in local news media   Asamura Patent Office celebrates its 130th anniversary, founded on the recommendation of Mr. Korekiyo Takahashi, and the…

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130 years since the foundation of Asamura Patent Office, Japan’s longest established patent firm (Oct 25, 2021)

Oct 25, 2021 130 years since the foundation of Asamura Patent Office, Japan’s longest established patent firm   On October 25, 2021, our firm celebrates its 130th anniversary, and we…

Read more

Japan’s Patent Law Revised: Major Draft Amendments (March 11, 2021)

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, the…

Read more

Changes to fee rates for patent, trademark and renewal registration from April 1, 2022 (Oct 1, 2021)

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, which…

Read more

Patent, trademark and renewal registration fees will be revised on April 1, 2022 (follow-up report) (Dec 22, 2021)

Dec 22, 2021 Patent, trademark and renewal registration fees will be revised on April 1, 2022 (follow-up report)   A Cabinet decision has been made to issue a Cabinet Order…

Read more

Closed Dates – 2022 – JPO and Asamura Patent Office (January 1, 2022)

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.  …

Read more

The year end and new year holidays (Dec 24, 2021)

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…

Read more

Patent, trademark and renewal registration fees will be revised on April 1, 2022 (follow-up report) (Dec 22, 2021)

Dec 22, 2021 Patent, trademark and renewal registration fees will be revised on April 1, 2022 (follow-up report)   A Cabinet decision has been made to issue a Cabinet Order…

Read more

Multiple dependent claims depending on other multiple dependent claims will no longer be allowed in Japan (Dec 17, 2021

Dec 17, 2021 Multiple dependent claims depending on other multiple dependent claims will no longer be allowed in Japan    On December 15, 2021, the Patent System Subcommittee of the…

Read more

Asamura Patent Office is featured in local news media (Dec 1, 2021)

Dec 1, 2021 Asamura Patent Office is featured in local news media   Asamura Patent Office celebrates its 130th anniversary, founded on the recommendation of Mr. Korekiyo Takahashi, and the…

Read more

130 years since the foundation of Asamura Patent Office, Japan’s longest established patent firm (Oct 25, 2021)

Oct 25, 2021 130 years since the foundation of Asamura Patent Office, Japan’s longest established patent firm   On October 25, 2021, our firm celebrates its 130th anniversary, and we…

Read more

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.

Takayuki Hatanaka

Patent Attorney
Senior Partner,
Mechanical & Electrical Dept.
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Katsunori Shirae

Patent Attorney
Senior Partner,
Mechanical & Electrical Dept.
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Akihiro Iwami

Patent Attorney
Senior Partner,
Mechanical & Electrical Dept.
Details

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
Senior Partner,
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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Mitsuo Okano

Patent Attorney
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 close to the Tokyo (Haneda) International Airport, and nice view of enjoying airplanes taking-off and landing.

Tennoz Central Tower                                
By Tokyo Monorail

  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.
  When using the Tokyo Monorail, please take only a Rapid or Local monorail, as the Haneda Express does not stop at   Tennozu Isle Station.
By Rinkai Line
  Get off at “Tennozu Isle Station”, take Exit B, and walk for 7 minutes along the Skywalk pedestrian bridge.
  Please go here for the route from the Rinkai Line Tennozu Isle Station to Asamura Patent Office.
By Toei Bus from Shinagawa Station
 If using the Toei Bus service from Shinagawa Station, please take one of the following buses:
  “品98” (Shina 98)
   Please go here for the route from JR Shinagawa Station to Asamura Patent Office.
  “品96甲・乙” (Shina 96, Kou/Otsu)
   Please go here for the route from JR Shinagawa Station to Asamura Patent Office.
By taxi
 Please find here the brief map for showing your taxi driver.
   5-10 minutes from JR Shinagawa Station.
  15-25 minutes from JR Tokyo Station.
  15-30 minutes from Haneda Airport.
Walking 15 minutes from JR Shinagawa Station.

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