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

Recent Update Events

Resumption of Normal Operations (Jun 21, 2021)

Jun 21, 2021 Resumption of Normal Operations In response to the government’s announcement to lift the state of emergency in Tokyo on June 20, Asamura Patent Office and Asamura Law…

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Asamura Patent Office Declares Two Stars in Security Action (Jun 8, 2021)

Jun 8, 2021 Asamura Patent Office Declares Two Stars in Security Action Asamura Patent Office Declares Two Stars in Security Action         We are pleased to announce that we…

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Asamura Patent Office has been Awarded a Silver Certificate for Excellence in Health & Well-Being in 2021 (May 18, 2021)

May 13, 2021 Asamura Patent Office has been Awarded a Silver Certificate for Excellence in Health & Well-Being in 2021 At Asamura Patent Office, we have implemented initiatives to promote…

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Patent attorney, Kazuyuki Obinata, was awarded The Order of the Sacred Treasure, Gold Rays with Rosette (May 6, 2021)

May 6, 2021 Patent attorney, Kazuyuki Obinata, was awarded The Order of the Sacred Treasure, Gold Rays with Rosette   We are delighted to announce that on April 29, 2021,…

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Asamura Patent Office celebrates its 130th anniversary this year (April 1, 2021)

Apr 1, 2021 Asamura Patent Office celebrates its 130th anniversary this year   This year, Asamura Patent Office celebrates its 130th anniversary. We would like to take this opportunity to…

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Asamura Patent Office recognized as an Excellent Enterprise of Health and Productivity Management 2021 by the Ministry of Economy, Trade and Industry (METI) and the Japan Health Council (March 4, 2021)

Mar 4, 2021 Asamura Patent Office recognized as an Excellent Enterprise of Health and Productivity Management 2021 by the Ministry of Economy, Trade and Industry (METI) and the Japan Health…

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Asamura Patent Office Wins “Trademark Law Firm of the Year in Japan – 2021” (February 18, 2021)

Feb 18,2021 Asamura Patent Office Wins “Trademark Law Firm of the Year in Japan – 2021” This year once again Global Law Experts named Asamura Patent Office the “Trademark Law…

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Asamura Patent Office Receives Once Again a Prestigious IP Award ( November 19, 2020)

Nov 19, 2020 Asamura Patent Office Receives Once Again a Prestigious IP Award We are pleased to announce that Asamura Patent Office has been awarded Trademark Law Firm of the…

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Status of application for design registrations for new subjects of protection under the revised Design Act (October 12, 2020))

Oct 12, 2020 Status of application for design registrations for new subjects of protection under the revised Design Act      

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Explanation of China’s Copyright Law coming into force in June 2021 (May 17, 2021)

May 17, 2021 Explanation of China’s Copyright Law coming into force in June 2021 Asamura Patent Office Chinese Lawyer  Zheng Xinjia The revision of Copyright Law of China The Standing Committee…

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The Diet passed a bill to amend the Patent Law on 14 May 2021 (May 14, 2021)

May 14, 2021 The Diet passed a bill to amend the Patent Law on 14 May 2021 On 2 March 2021, the Cabinet of Japan approved a bill to partially…

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The JPO Appeal System Handbook: Japanese and English Editions are Available (January 22, 2021)

  Jan 22, 2021 The JPO Appeal System Handbook: Japanese and English Editions are Available The Appeals Division of the Japan Patent Office (JPO) has two roles: higher examination and…

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The UK’s Brexit: Impact on Trade Marks and Designs in the European Union (December 25, 2020 )

  Dec 25, 2020 The UK’s Brexit: Impact on Trade Marks and Designs in the European Union   The United Kingdom left the European Union on 31 January 2020. The…

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Guide to 2021 Holiday Schedule in Japan ( December 24, 2020)

Dec 24, 2020 Guide to 2021 Holiday Schedule in Japan The Cabinet Public Relations Office issued an announcement on 21 December 2020 regarding the shifting of public holidays in 2021.…

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Japan Patent Office announced their interim handling procedures regarding “gproduct by process” claims (Asamura NEWS (Volume 16) )

Jul 22, 2015 Japan Patent Office announced their interim handling procedures regarding “product by process” claims ( Asamura NEWS (Volume 16))   With regard to so-called “product by process” claims, the…

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DOE may successfully work to prevent a third party from avoiding the patented process by geometric isomers (Asamura NEWS (Volume 15))

Jun 19, 2015 DOE may successfully work to prevent a third partyfrom avoiding the patented process by geometric isomers.(Asamura NEWS (Volume 15))   EHeisei25(Wa)4040: Tokyo District Court’s DecisionDOE may successfully…

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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, this year we celebrate our 130th anniversary.

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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.
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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
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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Syuji Kikuma

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