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

Recent Update Events

Ryota Hara, a patent attorney at our firm, has been awarded the Finance Monthly Legal Award 2021 in the category Trademark Lawyer of the Year (Sep 15, 2021)

Sep 15,2021 Ryota Hara, a patent attorney at our firm, has been awarded the Finance Monthly Legal Award 2021 in the category Trademark Lawyer of the Year Ryota Hara, a…

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Asamura Patent Office has been certified by the Tokyo Metropolitan Government’s Bureau of Industrial and Labor Affairs as a company that practices “Telework Tokyo Rules” (Aug 31, 2021)

Aug 31,2021 Asamura Patent Office has been certified by the Tokyo Metropolitan Government’s Bureau of Industrial and Labor Affairs as a company that practices “Telework Tokyo Rules” After an examination,…

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Two Patent Attorneys of our Firm have been selected as Top 50 IP Experts by Asia IP (Aug 27, 2021)

Aug 27,2021 Two Patent Attorneys of our Firm have been selected as Top 50 IP Experts by Asia IP We are proud to announce that Yoshiteru Mizumoto, Director of the…

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Our firm has been selected as one of the top 10 firms (Tier 2) in the category of Patent Prosecution in Japan by Asia IP (Aug 27, 2021)

Aug 27,2021 Our firm has been selected as one of the top 10 firms (Tier 2) in the category of Patent Prosecution in Japan by Asia IP   We are…

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Our firm once again has successfully ranked in the top 10 recommended IP law firms in Japan in 2021 (July 21, 2021)

Jul 21,2021 Our firm once again has successfully ranked in the top 10 recommended IP law firms in Japan in 2021 We are pleased to announce that our firm has…

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Asamura Patent Office has been included once again as a Highly Ranked Firm based on MIP Rankings (July 21, 2021)

Jul 21,2021 Asamura Patent Office has been included once again as a Highly Ranked Firm based on MIP Rankings   We are delighted to announce that Managing Intellectual Property (MIP)…

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Asamura Patent Office was awarded “The TOP 10 Trademark Law Firm Rankings 2021 for JAPAN” in The Trademark Lawyer Magazine (July 19, 2021)

Jul 19,2021 Asamura Patent Office was awarded “The TOP 10 Trademark Law Firm Rankings 2021 for JAPAN” in The Trademark Lawyer Magazine   Asamura Patent Office received “The TOP 10…

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Operational Changes in Response to the 4th Emergency Announcement: Guidance by Asamura Patent Office/Asamura Law Offices (July 12, 2021)

July 12, 2021 Operational Changes in Response to the 4th Emergency Announcement: Guidance by Asamura Patent Office/Asamura Law Offices In response to a spike in Covid-19 cases, Japanese government issued…

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Our firm has been selected as one of the top five firms (Tier 1) in the category of Trademark Prosecution in Japan by Asia IP (July 8, 2021)

Jul 8,2021 Our firm has been selected as one of the top five firms (Tier 1) in the category of Trademark Prosecution in Japan by Asia IP Our firm has…

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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