Message from the Managing Partner

Based in Nagoya, we aim to provide our clients with comprehensive, continuous services in all areas of intellectual property.

To this end, we operate our firm as a partnership and strive to offer a broad range of intellectual property services across as many technical fields as possible, from turning newly developed technologies into effective patent rights to enforcing those rights.

Our members have experience in development strategy and intellectual property strategy within companies, and we draw on that experience to provide our clients with attentive, in-depth service.

Tadashi Tomizawa
Managing Partner and Patent Attorney

Office Overview

Name Cosmos International Patent & Trademark Office
弁理士法人 コスモス国際特許商標事務所
Representative Partner Tadashi Tomizawa, Managing Partner
Established April 1991
Address 2F Nagoya Center Building Annex, 2-2-22 Nishiki, Naka-ku, Nagoya, Aichi 460-0003, Japan
Phone / Fax TEL +81-52-218-7161 / FAX +81-52-218-7166
Nanjing Office (China) Cosmos International Patent & Trademark Office, Nanjing Representative Office
Room 3006-5, 3/F, Cuiping Kechuang Building, No. 7 Yingcui Road, Jiangning District, Nanjing, Jiangsu, China
Main Fields Electrical engineering, mechanical engineering, semiconductors, production engineering, etc.
Staff
Patent attorneys
17
Passed the Chinese Patent Attorney Qualification Examination
1
Specification drafting assistants
6
Foreign procedures
7
Domestic procedures
4
CAD
2
General affairs
1
Total
40

As of October 2026

Patent Attorneys

  • Managing Partner, Patent Attorney

    Tadashi Tomizawa

    富澤 正

    • Mechanical
    • Control systems
    • Designs
    • Trademarks
  • Chairman, Patent Attorney

    Takashi Tomizawa

    富澤 孝

    • Production engineering
    • Mechatronics
    • Trademarks
    • Litigation
  • Vice Chairman, Patent Attorney

    Akihiro Okado

    岡戸 昭佳

    • Semiconductors
    • Control systems
  • Vice Chairman, Patent Attorney

    Makoto Okuda

    奥田 誠

    • Semiconductors
    • Electronic circuits
    • Mechatronics
    • Business methods
    • Sensors
    • Secondary batteries
  • Deputy Managing Partner, Patent Attorney

    Shigeki Nomura

    野村 茂樹

    • Mechatronics
    • Control systems
  • Deputy Managing Partner, Patent Attorney

    Yasuyuki Kato

    加藤 康幸

    • Software
    • Control systems
  • Deputy Managing Partner, Patent Attorney

    Takaya Muramatsu

    村松 孝哉

    • Electrical
    • Control systems
    • Mechatronics
  • Partner; passed the Chinese Patent Attorney Qualification Examination

    Lulu Sang

    桑璐璐

    • Production engineering
    • Mechanical
    • Trademarks
  • Patent Attorney

    Akiyo Murase

    村瀬 晃代

    • Business methods
    • Mechanical
  • Patent Attorney

    Soichiro Inoue

    井上 相一郎

    • Mechanical
    • Control systems
  • Patent Attorney

    Naru Ogaki

    大垣 成

    • Mechanical
    • Control systems
  • Patent Attorney

    Masatoshi Kamiya

    神谷 雅敏

    • Production engineering
    • Mechanical parts
    • Vehicle bodies
    • Vehicle interiors
  • Patent Attorney

    Keiichi Takemura

    竹村 恵一

    • Production engineering
    • Mechanical parts
  • Patent Attorney

    Emi Persson

    ペルソン 絵美

    • Mechanical
    • Designs
    • Trademarks
  • Patent Attorney

    Munetaka Yasuda

    安田 宗丘

    • Mechanical
    • Control systems
    • Trademarks
    • Designs
  • Patent Attorney

    Hiroshi Yamada

    山田 浩史

    • Biotechnology
    • Mechanical
    • Control systems
  • Patent Attorney

    Tsuyoshi Niwa

    丹羽 毅

    • Biotechnology
    • Semiconductors
    • Secondary batteries

Access

Address
2F Nagoya Center Building Annex, 2-2-22 Nishiki, Naka-ku, Nagoya, Aichi 460-0003, Japan
By Public Transportation
5-minute walk from Exit 6 of Marunouchi Station (Nagoya Municipal Subway Sakura-dori Line and Tsurumai Line)
By Car
Exit the Nagoya Expressway at Marunouchi Interchange.
(We do not have our own parking. Please use a nearby parking lot.)
Exterior of the Nagoya Center Building Annex