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As intellectual property experts, our office will make sincere efforts to contribute to the development of your business through the protection and utilization of intellectual property.
We value the credit that we have accumulated over many years of business, obtain intellectual property information in Japan and each country, and strive to become familiar with laws and practices, and we would like to support our clients.
We look forward to your continued patronage to our patent attorney corporation for many years to come.

Representative Patent Attorney:  Shuzo HIENAE
Representative Patent Attorney:  Kazuhiro OHSHIMA
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History

1933 Takeo OHSHIMA established OHSHIMA PATENT OFFICE in Osaka
1959 Kazutada OHSHIMA registered Patent Attorney
1973 Yasutoshi OHSHIMA registered Patent Attorney
1974 Kazutada OHSHIMA established another OHSHIMA PATENT OFFICE
1980 Yasutoshi OHSHIMA became the second representative of OHSHIMA PATENT OFFICE
1987 Co-operation of business with KOTANI INTERNATIOANAL PATENT OFFICE (established Osaka Branch of KYOWA PATENT AND LAW OFFICE, in 1913) 
1993 Succession of business from KOTANI INTERNATIONAL PATENT OFFICE
1994 Shuzo HIENAE registered Patent Attorney
1998 Succession of business from NAKAMURA TSUNEHISA PATENT OFFICE
2010 Takayasu KOBANE and Kiyotaka FUJIWARA registered Patent Attorneys
2015 Yasutoshi OHSHIMA and Shuzo HIENAE established OHSHIMA & ASSOCIATES, and both became co-representatives of the Patent Office.
2017 Shuzo HIENAE became the third representative of OHSHIMA & ASSOCIATES
2018 Kazuki ISHIGAMI (Patent Attorney) joined leader of trademark section of the OHSHIMA & ASSOCIATES.
2019 Kazuhiro OHSHIMA succeed of business from another OHSHIMA PATENT OFFICE.
2019 Kazuhiro OHSHIMA joined OHSHIMA & ASSOCIATES
2022 Shuzo HIENAE and Kazuhiro OHSHIMA established 
OHSHIMA & ASSOCIATES (Patent Attorneys Corporation).

Established 89 years on 2022.

 
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Around the year after opening of the firm: Takeo Ohshima,

The First Director and Patent Attorney (on the right of the photo)

〒542-0081 11-16 Minamisenba 4chome, Chuo-ku, Osaka-shi, Osaka5th floor of Shinsaibashi Columner Building
Contact 06-6243-1831
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弁理士法人 OHSHIMA & ASSOCIATES

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