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KAIZUKA Intellectual Property Attorneys, established in 2016 by Ryohei Kaizuka and Akira IWATA, Japanese patent and trademark attorneys, is an intellectual property law firm located in Tokyo,Japan.
We offers rapid and pointed services regarding intellectual properties such as patent, design and trademark in response to needs of clients.
Ryohei KAIZUKA, with over 15 years’experience, Akira IWATA,with over 15 years’experience, co-established KAIZUKA Intellectual Property Attorneys in May, 2016.
We offer professional intellectual property services including:Preparing, filing and prosecuting patent applications, utility model applications, design applications and trademark applications; Translating English or Japanese applications to be filed into Japanese or English applications; Demand for Trial; Appeals; Preparing professional opinions; Search for patents, utility models, designs and trademarks.
Ryohei KAIZUKA
Patent and Trademark Attorney
Brief History
March, 2000 Graduated from Waseda University (M.S., Mechanical Engineering)
April, 2000 Joined Kuma Patent Office
2002 Registered as a Japanese Patent Attorney (Registration No. 12526)
2006 Acquired a qualification as an litigation procurator for cases in specific infringement litigations
(Passed Specific Infringement litigation Representation Examination)
April, 2007 Co-established HOZMA Patent and Trademark Attorneys
Professional Experience
Patent and Utility Model Application Prosecution (Domestic and Foreign cases)
Technical field: Various mechanisms and control systems for automobile transmission, Semiconductor related apparatus (such as Semiconductor Wafer polishing apparatus, Cleaning equipment, Plating system), Switches for various electronic devices (such as Digital camera, Video tape recorder), Pump devices, Software related apparatus (including Business method model), Guide aparatuses,various mechanisms for laser printers
Patent Search
Trademark Application Prosecution (Domestic and Foreign cases) (Several hundred cased)
Design Application Prosecution (Domestic and Foreign cases)
Drawing for Patent and Design Applications
Member Japan Patent Attorneys Association (JPAA)
Languages Japanese and English
Ryoichi YAMASHITA
Patent and Trademark Attorney
Brief History
March, 1974 Graduated from Nagoya University (M.S., Mechanical Engineering)
April, 1974 Joined Ishikawajima‐Harima Heavy Industries, Co.,Ltd.
July, 1980 Joined domestic patent law firm
1985 Registered as a Japanese Patent Attorney (Registration No. 09285)
January, 1986 Established Yamashita and associates
December, 2018 Joined Kaizuka Intellectual Property Attorneys
Professional Experience
Patent and Utility Model Application Prosecution (Domestic and Foreign cases)
Technical field: Automobiles and motorcycles, hydraulic shock absorbers, machine tools, heat exchangers, air conditioning systems, welding
Member Japan Patent Attorneys Association (JPAA)
Languages Japanese and English
Yuji KATSURAGI
Patent and Trademark Attorney
Brief History
March 1977, Graduated from department of Electrical Engineering of Hiroshima University
April 1984, Joined a Japanese patent office
April 1988, Joined AT&T JAPAN LLC
1988, Registered as a Japanese Patent Attorney (Registration No. 09715)
April 1991, Opened Katsuragi Patent Office (management)
January 2020, Joined Kaizuka Intellectual Property Attorneys
Professional Experience
Patent and Utility Model Application Prosecution (Domestic and Foreign cases)
Technical field: Automobiles and motorcycles, hydraulic shock absorbers, machine tools, heat exchangers, air conditioning systems, welding
Member Japan Patent Attorneys Association (JPAA)
Languages Japanese and English