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Founder
![Yoshio KAWAGUTI](../img/people/photo01.jpg)
Yoshio KAWAGUTI
(1929-2019)
- Education:
- Osaka University (Bachelor of Laws, 1953)
- Qualification:
- Patent Attorney (admitted 1957)
- Practice Areas:
- Litigation; Trademark and Design
President
![Katsumasa OSAKI](../img/people/photo02.jpg?2001)
Katsumasa OSAKI
REPRESENTATIVE PARTNER
- Education:
- Keio University (Master of Engineering, Applied Chemistry, 1991)
- Qualification:
- Patent Attorney (admitted 1992)
IP Infringement Litigator (admitted 2004) - Practice Areas:
- Organic Chemistry; Polymer Chemistry; Materials Science and Engineering
Vice President
![Fuminori HAYASHI](../img/people/photo18.jpg)
Fuminori HAYASHI
MANAGING PARTNER
- Education:
- Keio University (Bachelor of Engineering, 1990)
- Qualification:
- Patent Attorney (admitted 2007)
- Practice Areas:
- Electrical; Electronics; Communication Engineering
Patent Division 1
![Naomi YOSHIDA](../img/people/photo12.jpg)
Naomi YOSHIDA
PARTNER
- Education:
- Tokyo Metropolitan University (Master of Science, Biology, 1995)
- Qualification:
- Patent Attorney (admitted 2000)
IP Infringement Litigator (admitted 2015) - Practice Areas:
- Biotechnology; Pharmaceuticals, and Foods
- External Activities:
- Technical Adviser(Tokyo High Court including IP High Court)from April 2018 to March 2022
Chairperson of Biotechnology and Life Science Committee, JPAA (From April 2017 to March 2018)
![Atsushi OKAWA](../img/people/photo11.jpg)
Atsushi OKAWA
SENIOR PARTNER
- Education:
- Stevens Institute of Technology (Master of Science, 1996)
- Qualification:
- Patent Attorney (admitted 2006)
IP Infringement Litigator (admitted 2016) - Practice Areas:
- Organic Chemistry; Polymer Chemistry; Materials
![Naoko KOJI](../img/people/photo10.jpg?240618)
Naoko KOJI
PARTNER
- Education:
- Tsukuba University (Bachelor of Agriculture, 1988)
- Qualification:
- Patent Attorney (admitted 2004)
IP Infringement Litigator (admitted 2008) - Practice Areas:
- Pharmaceuticals; Biochemistry
![Ayako MATSUI](../img/people/photo06.jpg)
Ayako MATSUI
PARTNER
- Education:
- Japan Woman's University (Bachelor of Domestic Arts, 1986)
- Qualification:
- Patent Attorney (admitted 1993)
IP Infringement Litigator (admitted 2005) - Practice Areas:
- Organic Chemistry; Polymer Chemistry; Materials
![Hiroshi SATO](../img/people/photo24.jpg)
Hiroshi SATO
PARTNER
- Education:
- Tokyo University (Master of Science, Chemistry, 1993)
- Qualification:
- Patent Attorney (admitted 2002)
- Practice Areas:
- Organic Chemistry; Polymer Chemistry; Analytical Chemistry; Functional Materials; Electronic Materials; Cosmetic; Metal; Biotechnology
![Atsushi OKAMOTO](../img/people/photo08.jpg)
Atsushi OKAMOTO
PARTNER
- Education:
- Chiba University (Master of Life Science, 2004)
- Qualification:
- Patent Attorney (admitted 2009)
- Practice Areas:
- Biochemistry; Pharmaceuticals
![Katsuhiko KIMURA](../img/people/photo26.jpg)
Katsuhiko KIMURA
PARTNER
- Education:
- University of Massachusetts (Doctor of Engineering, Plastics Engineering, 1996)
- Qualification:
- Patent Attorney (admitted 2004)
- Practice Areas:
- Polymer Science; Polymer Processing; Organic Chemistry
![Masafumi ICHIKAWA](../img/people/photo28.jpg)
Masafumi ICHIKAWA
PARTNER
- Education:
- Tokyo Institute of Technology (Master of Engineering, Biotechnology, 1998)
- Qualification:
- Patent Attorney (admitted 1998)
- Practice Areas:
- Biotechnology; Pharmaceuticals
![Daiichiro Yokoi](../img/people/photo31.jpg)
Daiichiro YOKOI
PARTNER
- Education:
- Tokyo University (Master of Agricultural and Life Science, 2004)
- Qualification:
- Patent Attorney (admitted 2009)
IP Infringement Litigator (admitted 2013) - Practice Areas:
- Pharmaceuticals; Biotechnology; Polymer Chemistry; Materials Science and Engineering
![Goichi IKETANI](../img/people/photo32.jpg)
Goichi IKETANI
PARTNER
- Education:
- Tokyo Institute of Technology (Master of Chemistry, 1999)
Tsukuba Law School (Doctor of Jurisprudence, 2010) - Qualification:
- Patent Attorney (admitted 2003)
IP Infringement Litigator (admitted 2018) - Practice Areas:
- Organic Chemistry; Polymer Chemistry
![Eri BUNYA](../img/people/photo27.jpg?2001)
Eri BUNYA
- Education:
- Tokyo University (Doctor of Science, Molecular Biology, 2002)
- Qualification:
- Patent Attorney (admitted 2016)
- Practice Areas:
- Biotechnology; Pharmaceuticals
![Chiharu SHIOIRI](../img/people/photo30.jpg)
Chiharu SHIOIRI
- Education:
- The Graduate University for Advanced Studies (Doctor of Science, Biology, 2003)
- Practice Areas:
- Polymer Chemistry; Biotechnology; Pharmaceuticals
Patent Division 2
![Mitsumasa IHARA](../img/people/photo17.jpg)
Mitsumasa IHARA
PARTNER
- Education:
- Tokyo City University (Bachelor of Engineering, 1989)
- Qualification:
- Patent Attorney (admitted 2007)
IP Infringement Litigator (admitted 2010) - Practice Areas:
- Electrical; Electronics; Communication Engineering
![Yoshikazu TAKEI](../img/people/photo25.jpg)
Yoshikazu TAKEI
PARTNER
- Education:
- Nihon University (Bachelor of Engineering, 1993)
- Qualification:
- Patent Attorney (admitted 2000)
- IP Infringement Litigator (admitted 2006)
- Practice Areas:
- Fluid Mechanics; Aeromechanics; Strength of Materials
![Kazuo KAWAMURA](../img/people/photo23.jpg)
Kazuo KAWAMURA
PARTNER
- Education:
- Waseda University (Master of Applied Physics, 1991)
- Qualification:
- Patent Attorney (admitted 2018)
- IP Infringement Litigator (admitted 2020)
- Practice Areas:
- Electrical; Electronics; Physics
Trademark & Design Division
![Tomiyo NAKAMURA](../img/people/photo29.jpg)
Tomiyo NAKAMURA
PARTNER
- Education:
- Nara Women’s University (Bachelor of Science, 1992)
- Qualification:
- Patent Attorney (admitted 2013)
- Practice Areas:
- Trademark; Design; Copy right
![](../img/people/photo33.jpg)
Takako SHINODA
PARTNER
- Education:
- Ritsumeikan University (Bachelor of Law, 1994)
- Qualification:
- Patent Attorney (admitted 2013)
- Practice Areas:
- Trademark; Copyright