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SUGIMURA & Partners

Work +81 3 3581 2241
Fax +81 3 3580 0506
Palo Alto, Tokyo

Tetsuo Tsukanaka

Work +81 3 3581 2241
SUGIMURA & Partners

Work Department

Material science, chemistry, mechanical engineering.


Mr Tsukanaka joined the firm in 2010 and is the deputy president. His practice encompasses patent prosecution in the chemical, material science, pharmaceutical, medical device, bio technology, and alternative energy fields. Prior to joining SUGIMURA, Mr Tsukanaka had a distinguished and influential career at the JPO, where he served as director of the biotechnology division, as director of the examination standards office, and then as deputy director-general of the chemical examination department. Of particular note, Mr Tsukanaka led the review of the JPO examination standards regarding genetic, protein-structure, and pharmaceutical inventions. In 2005, Mr Tsukanaka was appointed chief appeal and trial examiner of the appeals department at the JPO, where he delivered numerous judgments in the field of medicine. In 2010, Mr Tsukanaka joined SUGIMURA where he serves as a key patent prosecutor, advising on drafting techniques and strategies to avoid and overcome unfavorable decisions from the JPO. He also serves as our lead attorney in appeals processes before the JPO. Mr Tsukanaka continues to be very influential in the Japanese IP community, writing and speaking on patent prosecution practice before the JPO.


English, Japanese.


Kyoto University (BS Chemistry; MS Chemistry).

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Legal Developments in Japan

Legal Developments and updates from the leading lawyers in each jurisdiction. To contribute, send an email request to
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  • Licensing - 2010

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