History
| 1971 | Patent attorney Akira Kohno founded the firm at its current location in the Nagatacho Hoso Building, Akasaka, Minato-ku, Tokyo. |
| 2003 | Michiko Hosaka, the current managing partner, became the second head of the firm. |
| 2006 | Formed an alliance with Nagakawa & Okamura Law Office. |
| 2010 | Established the Odawara branch. |
| 2012 | Began holding intellectual property seminars. |
| 2015 | Established as a patent professional corporation. |
Office Information
Akasaka Office
Address:
#306 Nagatacho Hoso Building 2-2-21, Akasaka, Minato-ku, Tokyo 107-0052, Japan
Tel: +81-3-3583-5043
Fax: +81-3-3584-7587
Access:
• Tameike-Sanno Station (Tokyo Metro Ginza Line, Namboku Line): 1-minute walk from Exit 8
• Kokkai-gijidomae Station (Tokyo Metro Chiyoda Line, Marunouchi Line): 5-minute walk from Exit 5
Odawara Office
Address
NTT Building
1-14-28 Sakae-cho, Odawara-shi, Kanagawa 250-0011, Japan
Access:
• Odawara Station (JR, Odakyu Line, Daiyuzan Line): 5-minute walk from the East Exit
Patent Attorney
Managing Partner: Michiko Hosaka Patent Attorney (Registration No. 12862)
Concerned about the decline in global trust in Japan.
Emphasizes the importance of regaining a competitive and proactive spirit to compete globally through the effective use of intellectual property rights.
Education
• Yokohama National University
Practice Areas
• Patents (Mechanical, Software)
• Designs
• Copyright
Major Professional Activities
• Board Member of Japan Group, APAA (Asian Patent Attorneys Association) (2022–Present)
• Member, APAA Design Committee (2016–Present)
• Member, INTA (International Trademark Association) (2003–Present)
• Patent Attorney Examination Committee Member (2012, 2013, 2016)
• Council Member, Japan Patent Attorneys Association (2010, 2011)
• Member, Copyright Law Committee, Japan Patent Attorneys Association (2008, 2009)
• Member, Unfair Competition Prevention Law Committee, Japan Patent Attorneys Association (2012–2014)
• Kanagawa Committee Member, Kanto Branch, Japan Patent Attorneys Association (2011–2024)
• Patent Consultation Advisor, Kanto Branch, Japan Patent Attorneys Association (2006–2024)
• Intellectual Property Consultant, Odawara-Hakone Chamber of Commerce and Industry (2010–Present)
• Intellectual Property Consultant, Hiratsuka Chamber of Commerce and Industry (2019–Present)
Partner: Koichi Murakami Patent Attorney (Registration No. 13848)
Strives to achieve both cost-effectiveness and high quality through efficient and meticulous research and analysis.
Education
• University of Tsukuba
Practice Areas
• Trademarks
• Unfair Competition Prevention Law
• Copyright
Key External Activities
• Member, INTA (International Trademark Association) (2006–Present)
• Member, Japan Trademark Association (2006–Present)
Associate: Akiko Kurawaki Patent Attorney (Registration No.16710 )
We will support our clients and stay with them until the very last minute, always offering our most sincere advice and solutions. I am proud to be part of this honest and dedicated team.
Education
• Dokkyo University, Linguistics
• University of the Air, Chemistry, Biochemistry, Physical Chemistry
Practice Areas
• Patents (Chemistry, Biotechnology, Mechanical Engineering [primarily systems-related])
Key External Activities
• Board Member of Japan Group, APAA (Asian Patent Attorneys Association) (2026–Present)
• Member (2019–Present) and Chair (2026–Present), Japan Group, APAA Patent Committee
• Member, International Activities Center, Japan Patent Attorneys Association (2023–2025)