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About Us

Name and Location

Moegi Patent Office (Representative: Attorney, Yoshio Ishii)
Address 4F, Intec 88 Bldg.
20-21 Araki-cho,
Shinjuku-ku, Tokyo 160-0007
Telephone +81-3-6457-8309
Facsimile +81-3-6457-8359
> see the detailed map

History of Firm

Mr. Hirotoyo Miyata, who had been an appeal board examiner in the field of agriculture and fisheries, first established Miyata Patent Office in 1967.
Mr. Seiya Fujino who had been a junior to Mr. Miyata at the Japan Patent Office succeeded to the office in 1989, and changed the firm name to Fujino Patent Attorney.
The firm further changed its name to Moegi Patent Office on January 1, 2005.
On January 1, 2006, Mr. Ishii succeeded Mr. Fujino and the partnership management was introduced, and the firm became a patent professional corporation on January 4, 2008.


- Master of engineering, Engineering Department of Yokohama National University.
- Ex-appeal-examiner-in-chief at the Japan Patent Office; ex-investigator of Osaka and High District Court.

Chemical engineering, inorganic chemistry and medical appliances.

- Bachelor of Agricultural Chemistry, Agricultural Department of Hokkaido University.
- Former researcher in the field of biochemistry at Komatsu Co., Ltd; former member of the intellectual property department of Komatsu Co., Ltd.

Biosciences, chemistry in general

-Bachelor of Inorganic Materials, Faculty of Technology, Tokyo Institute of Technology.
-Former appeal-examiner-in-chief at the Japan Patent Office.

Inorganic chemistry, chemical engineering and materials science

- Ph.D. (Applied Biotechnology), Graduate School of Agricultural and Life Sciences, The University of Tokyo (1997-2000)
- Visiting Fellow, NICHD, NIH, USA (2000-2005)

Genetics, genetic engineering, biochemistry, molecular biology, cell biology, developmental biology, regenerative medicine, etc.

- Master of engineering, Graduate School of Bio-Applications and Systems Engineering,Tokyo University of Agriculture and Technology.
- Former engineer at patent law firm in Tokyo.

Polymer materials, semiconductor materials, food & beverage, medical appliances, analyzer, etc.

- Master of Agriculture, Graduate School of Bioagricultural Sciences, Nagoya University.
-Licensed infringement litigation representative.
- Former researcher at Morinaga Milk Industry Co., Ltd; former patent attorney at patent law firm in Tokyo.

Foods, cosmetics, genetic engineering, medical appliances, etc.

Technical Specialists: 1
Clerical staff: 5

Practice Areas

All domestic and foreign intellectual-property-related affairs, especially filing, expert opinion, appeals, revocation appeals, and infringement (as a curator) related to patents, utility models, designs and trademarks, in the fields of food chemistry, pharmaceuticals, medical supplies, biosciences, fisheries, livestock feed, fertilizer, petrochemistry, polymers, sanitary articles, cosmetics, etc.

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