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Our services cover a variety of matters realting to acquisition and maintenance of IP rights. We mainly offer the following services:

Some of the Services We Provide

We handle patent matters on a global basis.

As a patent firm based in Osaka, Japan, we specialize in patent application and patent protection in various countries around the world.
The largest and second largest numbers of foreign applications are made in the United States and China, respectively.
Other countries include: South Korea, most of the European countries, Brazil, Russia, India, Canada, Australia, Taiwan, Thailand, the Philippines, Indonesia, Malaysia, Singapore, Peru, Costa Rica, Mexico, and Tanzania.

Areas of Practice

<Technical Fields>

●Fuel cells/ Primary batteries/ rechargeable batteries/ solar cells/ power supply systems/ electronic components/ circuits/ resin compositions/ polymers & plastics/ adhesives/ sheet materials/ textiles/ synthetic leather/ semiconductors/ automobile components/ plasm devices/ lasers/ environmental technology/ medical equipment.
●We mainly handle matters in the chemical field, mechanical field, information technology, etc.
Services in the area of electrochemistry (chemical batteries, fuel cells, etc. ) are in high demand in recent years.
●Services relating to foreign patent applications (mostly US patent applications) are in high demand.
We have ties with many foreign patent firms and communicate well with all of them.
●We also put much effort in providing consulting services to help our clients discover new inventions. Even if there is an idea, it is a difficult task to write claims and descriptions for a specification. Therefore, we will provide the needed support in completing an invention, by pointing out what is missing and what needs to be added.

Our Patent Attorneys

Shinichi KAWASAKI, Patent Attorney, Chief Managing Partner
Ph. D., Attorney Registration No. 11797
Chemicals, batteries, electronic components, plastics, legal opinion, litigation

●Ph.D. in Engineering
●Extensive experience preparing and prosecuting foreign and domestic patent applications


1995 Received M.S. in Physical Chemistry from Osaka Prefecture University
1995 Employed as engineer conducting basic research in R&D; Department of Nagase-Chiba, Ltd.(now Nagase Chemtex Corporation)
1998 Joined Asahina & Co. Patent Attorneys
1999 Joined Ishii Patent Office
2006 Received B.A. in Law from Kindai University
2009 Received Ph.D. in Engineering (Materials and Manufacturing Science) from Osaka University
2012 Became Managing Partner of Ishii Patent Office
2017 Appoined as Chief Managing Partner of Kawasaki & Partners

Kaoru HASHIMOTO, Patent Attorney
Attorney Registration Number: 10747
Electrical products, machines, optical products, textiles, legal opinion, litigation, design

●Obtained additional registration for representation of clients in specific infringement litigation
●Extensive experience in patenting and designing technologies for electronics, controllers, mechanics, and textile manufacturers


1981 Received B.S. in Engineering Science from Osaka University
1981 Joined Minolta Co., Ltd. (now Konica Minolta, Inc.)
Participated in development of the world's first 0.5× to 2.0× full zoom control system for copiers
Participated in development of fixation control systems, exposure control systems, image-processing systems, etc.
1988 Joined Osamu Kitamura Patent Office (now R&C; IP Law Firm)
1995 Registered as a patent attorney
2002 Co-founded Athena Patent Office
2004 Became founder of Sparkle Patent Office
2006 Partnered with Ishii Patent Office with an agreement on cooperation
2017 Joined Kawasaki & Partners

Shigeru KURODA, Patent Attorney
Patent Attorney Registration Number: 11515
Electrical / electronic devices, batteries, organic / inorganic materials, appraisals / disputes

● Additional registration for specific infringement litigation agency business


1989 Graduated from Kyoto University Faculty of Engineering Industrialization
1991 Completed Graduate School of Engineering, Kyoto University (Department of Industrial Chemistry)
1991 Joined Sanyo Electric Co., Ltd.
Engaged in research and development of solar cells and nickel-metal hydride secondary batteries
1998 Joined Ikeuchi / Sato & Partners,
Mainly in charge of solar cells, secondary batteries, semiconductor devices, liquid crystal displays
2003 Joined Seiran International Patent firm,
Mainly in charge of electrical / electronic equipment and organic / inorganic materials
2015 Joined Ascend Patent firm,
Mainly in charge of metal processing field
2017 Shigeru Kuroda Patent firm
2019 Joined Kawasaki & Partners

Tomoshi TANIBE, Patent Attorney
Patent Attorney Registration Number: 22315
Machinery, mechatronics, motors


2010 Osaka University Graduate School of Engineering Completed (Department of Intelligence and Function Creation Engineering)
2010 Joined Sanyo Electric Co., Ltd.
Engaged in research and development of electric motors
2012 Joined Maeda Patent Office, a patent business corporation
Mainly in charge of the mechanical field
2020 Joined Kawasaki & Partners

Shinya HAZUI, Patent Attorney
Attorney Registration Number: 20755
Chemicals, batteries, electronic components, inorganic materials


1996 Received M.S. in Engineering (Applied Chemistry) from Osaka Prefecture University
1996 Joined Shin-Kobe Electric Machinery Co., Ltd.
Engaged mainly in research and development of lead storage batteries
2001 Joined Ishii Patent Office
2012 Joined Morimoto International Patent Office
2015 Returned to Ishii Patent Office
2017 Joined Kawasaki & Partners

Genichiro NISHIYAMA,Patent Attorney
Attorney Registration Number: 22420


2008 Received Master of Agriculture from Kyoto University
2008 Joined SHIONOGI & Co., Ltd., Engaged in drug discovery research
2013 Transferred to IP dept. of SHIONOGI
2019 Started an IT venture
2021 Started Donguri Patent and Trademark Office
2022 Joined Kawasaki & Partners


Name of Firm Kawasaki & Partners
Chief Managing Partner Shinichi Kawasaki, Patent Attorney
Address Kitahama-Yamamoto Building
3-6, Kitahama 2-Chome, Chuo-ku, Osaka, 541-0041 Japan
Phone Number 06-4707-8050
Fax Number 06-4707-8051
Bank Sumitomo Mitsui Banking Corporation
About the Firm Our firm was founded by Kazuo Ishii in December, 1998. Ever since, it has been steadily growing with support from our clients which are mainly major electronics manufacturers.Our firm is located in Kitahama, which is at the center of Osaka.
Access One minute walk from Exit 2 (30 meters west from exit), "Kitahama" station of Keihan Line or Sakaisuji Line