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Office History


1926

1926 The late Yoshitaro SUMIDA (patent attorney license #2248) opened Sumida Naigai Patent Office in Fukiai ward, Kobe

1948

Office moved to Ikuta ward, Kobe

1962

Yoshihiro SUMIDA (Patent attorney license #6586) joined

1970

Office moved to Kobe Shoko Boeki Center Bldg., Chuo ward, Kobe

1978

Established KK.I.T.L. (Institute of Technological Licensing) for counseling on international technology licensing

1979

Office moved to Boeki Bldg., Chuo ward, Kobe

1995

Office renamed "ARCO Patent Office"

2003

Established IP department of a chinese law firm. ( It's reformed to our liaison office in 2005. And it's reformed to our franchise patent firm "HANQIAO PATENT" in 2010. )

2006

Office incorporated into a "Patent Corporate Body"

2007

Established Kyoto Branch

2009

Mr. Masaru NAKAO became Presiding Partner.

2017

OKA & PARTNERS joined.

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