Principal Officers of the JPO

April 1, 2026

• Commissioner
• Deputy Commissioner
• Policy Planning and Coordination Department
• Trademark and Customer Relations Department
• Patent and Design Examination Department (Physics, Optics, Social Infrastructure and Design)
• Patent Examination Department(Mechanical Technology)
• Patent Examination Department(Chemistry, Life Science and Material Science)
• Patent Examination Department (Electronic Technology)
• Trial and Appeal Department

Principal Officers of the JPO

Commissioner

Title	Name
Commissioner	KASAI Yasuyuki

Deputy Commissioner

Title	Name
Deputy Commissioner	YASUDA Futoshi

Policy Planning and Coordination Department

Title	Name
Director-General, Policy Planning and Coordination Department	YOSHIZAWA Takashi
Director, Personnel Division	FURUI Ryoji
Patent Attorney Services Administrator	KATO Tomoya
Supervisor for Personnel Affairs	MAKINO Nobuyuki
Director, General Coordination Division	KAMEI Akinori
Director for Business Management	HARA Shinichiro
Director, Information Technology and Patent Information Management Office	UEO Takahiko
Director, Budget and Accounts Division	HOSOYA Kenji
Senior Inspection Officer for Budget and Accounts	YOKOUCHI Takeshi
Welfare Administrator	KATAGIRI Tamotsu
Director, Policy Planning and Research Division	YANAGISAWA Tomoya
Director, IP Promotion Division	YOSHINO Sachiyo
Director, International Policy Division	TAKESHIGE Tatsuo
Director for International Intellectual Property Policy Planning	NITTA Ryo
Director, International Cooperation Division	NITTA Minoru

Trademark and Customer Relations Department

Title	Name
Director-General, Trademark and Customer Relations Department	MOROTA Akihiko
Director, Customer Relations Policy Division	ITO Yasuo
Director, Formality Examination Office	KURIWAKI Yasunori
Director, Registration Office	SUGIYAMA Takuya
Director, Application Division	KOMAZAKI Toshinori
Director, Patent Administration Service Office	NAKAYAMA Yoshihiro
Director, Office for International Applications under the Patent Cooperation Treaty (PCT)	TANIGUCHI Masayuki
Director, Office for International Design Applications under the Geneva Act of the Hague Agreement and International Trademark Applications under the Madrid Protocol	OE Mayako
Director, Trademark Division	AMIYA Mariko
Director for Trademark Examination Planning	OMO Yasuo
Director, Chemicals Division	URABE Yoshie
Director, Machinery Division	MIZUOCHI Hiroshi
Director, General Merchandise and Textiles Division	SHOJI Miwa
Senior Director, Industrial Services , General Services and International Trademark Application Division	SETO Toshiaki
Director, International Trademark Application Division	FUKUDA Yoko

Patent and Design Examination Department (Physics, Optics, Social Infrastructure and Design)

Title	Name
Director-General, Patent and Design Examination Department (Physics, Optics, Social Infrastructure and Design)	KITAMURA Hiroki
Director, Administrative Affairs Division	NAKANO Hirokazu
Director, Examination Promotion Office	TAKAHASHI Masaru
Director, Examination Standards Office	HOSHINO Masayuki
Deputy Director-General of the Patent and Design Examination Department (Measurement and Applied Physics Division)	SASANO Hideo
Director, Applied Physics Division	FURUTA Atsuhiro
Senior Director, Material Analysis and Medical Diagnosis Division	OKUMA Yasuo
Senior Director, Applied Optics and Optical Devices Division	KOBAYASHI Hideji
Director, Optical Devices Division	IMAURA Akiyoshi
Director, Business Machinery Division	TAKEMURA Shinichiro
Senior Director, Natural Resources and Amusement Division	YOKOI Naoto
Director,Amusement Division	WATANABE Isamu
Director, User Experience Division	KIYOTO Hiroaki
Director, Design Division	KUBOTA Daisuke
Director for Design Examination Planning	TAMAMUSHI Nobuaki
Senior Director, Information and Transportation Design Division	SHIMOMURA Keiko
Director, Consumer Goods and Distribution Design Division	MIYAMOTO Jun
Director, Environment and Infrastructure Design Division	KAMITANI Yuki

Patent Examination Department(Mechanical Technology)

Title	Name
Director-General, Patent Examination Department(Mechanical Technology)	KOMATSU Ryuichi
Deputy Director-General of the Patent Examination Department (Automatic Control and Motive Machinery Division)	UCHIYAMA Takashi
Director, Motive Machinery Division	GOKAN Toichiro
Senior Director, Transportation Division	OKAZAKI Katsuhiko
Director, General Machinery Division	MIYASHITA Koji
Senior Director, Production Machinery and General Machinery Division	ONO Yukio
Director, Logistics Division	SHIMADA Kenji
Director, Textile Processing and Packaging Machinery Division	KAJIMOTO Naoki
Senior Director, Living Related Machinery and Heating, Refrigerating and Air-conditioning Engineering Division	HARA Taizo
Director, Heating, Refrigerating and Air-conditioning Engineering Division	KONDO Hiroyuki
Director, Medical Device Division	SASAKI Satoshi

Patent Examination Department(Chemistry, Life Science and Material Science)

Title	Name
Director-General, Patent Examination Department(Chemistry, Life Science and Material Science)	MOROOKA Kenichi
Deputy Director-General of the Patent Examination Department (Inorganic Chemistry and Batteries Division)	HIRAI Hiroaki
Senior Director, Environmental Chemistry Division	WASEDA Yoshimasa
Director, Batteries Division	YAMAMOTO Eiichi
Senior Director, Medical Science and Foods Division	TANAKA Norimitu
Director, Biotechnology Division	MIHARA Kenji
Director, Foods Division	SAKU Takashi
Senior Director, Organic Chemistry and Applied Organic Chemicals Division	TAKABU Takuya
Director, Applied Organic Chemicals Division	YASUKAWA Satoshi
Director, Polymer Division	YAMAMOTO Goichi
Director, Resins Division	HORI Hiroki

Patent Examination Department (Electronic Technology)

Title	Name
Director-General, Patent Examination Department (Electronic Technology)	NISHINA Masahiro
Deputy Director-General of the Patent Examination Department (Electronic Commerce Technology and Management-Systems Division)	HONMA Tomotaka
Director, Management-Systems Division	SAKURAI Shigeyuki
Senior Director, Data Processing Division	MIYATA Shigeto
Senior Director, Transmission Systems Division	UMEMOTO Tatsuo
Director, Electric Power Systems Division	TOHYAMA Takahiko
Director, Digital Communications Division	HAMAGISHI Hiroaki
Senior Director, Video System and Electronic Components Division	TSUBATA Takao
Director, Electronic Components Division	TACHIBANA Masanori
Director, Electronic Device Division	TOMITA Takashi

Trial and Appeal Department

Title	Name
Director-General, Trial and Appeal Department	NONAKA Matsuo
Executive Chief Administrative Judge	MORIFUJI Atsushi
Director, Trial and Appeal Division	MATSUSHITA Koichi
Director, Trial Clerk Office	YAMAGUCHI Takashi

The 1st Board of Trial and Appeal (Measurement)

Title	Name
Senior Director of the 1st Board of Trial and Appeal	HAMANO Takashi
Chief Administrative Judge	SAIDO Shingo
Chief Administrative Judge	GOTO Ryoji

The 2nd Board of Trial and Appeal (Materials Analysis)

Title	Name
Director of the 2nd Board of Trial and Appeal	MINAMI Kosuke
Chief Administrative Judge	KAGAMI Kazue
Chief Administrative Judge	MIYAZAWA Hiroshi

The 3rd Board of Trial and Appeal (Amusement Machinery)

Title	Name
Director of the 3rd Board of Trial and Appeal	AKITA Masayuki
Chief Administrative Judge	TAKANO Hiroshi
Chief Administrative Judge	YOSHIKAWA Yasushi
Chief Administrative Judge	KOJIMA Hiroshi

The 4th Board of Trial and Appeal (General Amusement)

Title	Name
Director of the 4th Board of Trial and Appeal	SHIBUYA Tomoko
Chief Administrative Judge	SAWADA Shinji
Chief Administrative Judge	UETA Takamori
Chief Administrative Judge	KAWAGUCHI Shinichi

The 5th Board of Trial and Appeal (Natural Resources and Living Environment)

Title	Name
Senior Director of the 5th Board of Trial and Appeal	IJIMA Kazunori
Chief Administrative Judge	ARIIE Yoshiro

The 6th Board of Trial and Appeal (Applied Optics)

Title	Name
Director of the 6th Board of Trial and Appeal	SATOMURA Toshimitsu
Chief Administrative Judge	KAMITANI Kenichi
Chief Administrative Judge	KOYANO Hiroyuki

The 7th Board of Trial and Appeal (Business Machinery)

Title	Name
Director of the 7th Board of Trial and Appeal	KAWAMATA Hiroshi
Chief Administrative Judge	HAMAMOTO Tadahiro
Chief Administrative Judge	TONOKAWA Masaya

The 8th Board of Trial and Appeal (Applied Physics and Optical Devices)

Title	Name
Senior Director of the 8th Board of Trial and Appeal	OKADA Yoshimi
Chief Administrative Judge	HATAE Susumu

The 9th Board of Trial and Appeal (Automatic Control and Living Related Machinery)

Title	Name
Senior Director of the 9th Board of Trial and Appeal	KAKIZAKI Hiraki
Chief Administrative Judge	MURAKAMI Satoshi
Chief Administrative Judge	KITAMURA Hidetaka

The 10th Board of Trial and Appeal (Motive Machinery)

Title	Name
Director of the 10th Board of Trial and Appeal	ENDO Hideaki
Chief Administrative Judge	YAGI Makoto
Chief Administrative Judge	KAWABATA Tadashi

The 11th Board of Trial and Appeal (Transportation and Lighting)

Title	Name
Director of the 11th Board of Trial and Appeal	KUSANO Akiko
Chief Administrative Judge	KURAHASHI Norio
Chief Administrative Judge	TAMURA Kosaku

The 12th Board of Trial and Appeal (General Machinery and Logistics)

Title	Name
Director of the 12th Board of Trial and Appeal	ISHII TAKAAKI
Chief Administrative Judge	OGAWA Kyoji
Chief Administrative Judge	NAKAYA Yuichiro

The 13th Board of Trial and Appeal (Production Machinery)

Title	Name
Director of the 13th Board of Trial and Appeal	HONJO Ryotaro
Chief Administrative Judge	YOKOMIZO Akinori
Chief Administrative Judge	SUZUKI Takao
Chief Administrative Judge	ICHINOSE Kaoru

The 14th Board of Trial and Appeal (Textile Processing and Packaging Machinery)

Title	Name
Director of the 14th Board of Trial and Appeal	IWATANI Kazuomi
Chief Administrative Judge	KANAMARU Haruyuki
Chief Administrative Judge	TAGUCHI Suguru
Chief Administrative Judge	KAMIYAMA Shigeki

The 15th Board of Trial and Appeal (Medical Device)

Title	Name
Director of the 15th Board of Trial and Appeal	SASAKI Seisho
Chief Administrative Judge	INOUE Tetsuo
Chief Administrative Judge	KURIYAMA Takuya
Chief Administrative Judge	YASUI Hisanori

The 16th Board of Trial and Appeal (Heating, Refrigerating and Air-conditioning Engineering)

Title	Name
Director of the 16th Board of Trial and Appeal	HIRASE Tomoaki
Chief Administrative Judge	OYAMA Takeshi
Chief Administrative Judge	MATSUNAGA Kenichi

The 17th Board of Trial and Appeal (Inorganic and Environmental Chemistry)

Title	Name
Director of the 17th Board of Trial and Appeal	FUKAKUSA Yuichi
Chief Administrative Judge	MIYAZAWA Takayuki
Chief Administrative Judge	HARA Kenichi

The 18th Board of Trial and Appeal (Materials Processing, Metals and Electrochemistry)

Title	Name
Director of the 18th Board of Trial and Appeal	AWANO Masaaki
Chief Administrative Judge	INOUE Takeshi
Chief Administrative Judge	TOMINAGA Yasunori

The 19th Board of Trial and Appeal (Polymers)

Title	Name
Director of the 19th Board of Trial and Appeal	HOSOI Ryuji
Chief Administrative Judge	YOSHIZAWA Eiichi
Chief Administrative Judge	TATSUMI Masao

The 20th Board of Trial and Appeal (Foods and Plastics Engineering)

Title	Name
Director of the 20th Board of Trial and Appeal	MATSUDA Shigemasa
Chief Administrative Judge	SHIBATA Masahiro
Chief Administrative Judge	AMANO Hiiroki

The 21st Board of Trial and Appeal (Applied Organic Chemicals)

Title	Name
Senior Director of the 21st Board of Trial and Appeal	MITSUMOTO Minako
Chief Administrative Judge	MURAMORI Hirofumi
Chief Administrative Judge	INOUE Chiyako

The 22nd Board of Trial and Appeal (Organic Chemistry)

Title	Name
Director of the 22nd Board of Trial and Appeal	KAMEGAYA Akihisa
Chief Administrative Judge	TOMINAGA Tamotsu
Chief Administrative Judge	SAITO Megumi
Chief Administrative Judge	NIIDOME Yutaka

The 23rd Board of Trial and Appeal (Pharmaceuticals)

Title	Name
Director of the 23th Board of Trial and Appeal	ASANO Mina
Chief Administrative Judge	FUJIWARA Hiroko
Chief Administrative Judge	TANAKA Koichiro
Chief Administrative Judge	ISOGAI Kanae

The 24th Board of Trial and Appeal (Biopharmaceuticals)

Title	Name
Senior Director of the 24th Board of Trial and Appeal	MATSUNAMI Yumiko
Chief Administrative Judge	TOMINAGA Midori
Chief Administrative Judge	YOSHIDA Kayoko
Chief Administrative Judge	KOGURE Michiaki

The 25th Board of Trial and Appeal (Biotechnology)

Title	Name
Director of the 25th Board of Trial and Appeal	KAMIJO Hajime
Chief Administrative Judge	NAKAMURA Hiroshi
Chief Administrative Judge	UEHARA Katsunori

The 26th Board of Trial and Appeal (Electronic Commerce Technology)

Title	Name
Director of the 26th Board of Trial and Appeal	SATO Tomoyasu
Chief Administrative Judge	MATSUDA Naoya
Chief Administrative Judge	IWATA Yukitaka
Chief Administrative Judge	NOZAKI Daishin

The 27th Board of Trial and Appeal (Interface)

Title	Name
Director of the 27th Board of Trial and Appeal	IWAMA Naozumi
Chief Administrative Judge	SHINOZUKA Takashi
Chief Administrative Judge	SEKINE Yutaka
Chief Administrative Judge	TOMIZAWA Tetsuo

The 28th Board of Trial and Appeal (Data Processing)

Title	Name
Senior Director of the 28th Board of Trial and Appeal	YOSHIDA Yoshihiko
Chief Administrative Judge	HAYASHI Tsuyoshi
Chief Administrative Judge	Wakioka Tsuyoshi

The 29th Board of Trial and Appeal (Electronic Devices)

Title	Name
Director of the 29th Board of Trial and Appeal	KOMIYA Shinji
Chief Administrative Judge	MATSUNAGA Minoru
Chief Administrative Judge	KAJIO Seiya
Chief Administrative Judge	SATO Yoichi

The 30th Board of Trial and Appeal (Video System)

Title	Name
Director of the 30th Board of Trial and Appeal	ITO Takao
Chief Administrative Judge	ENDO Hiroshi
Chief Administrative Judge	HATANAKA Takayuki

The 31st Board of Trial and Appeal (Transmission Systems)

Title	Name
Director of the 31st Board of Trial and Appeal	KAWAI Hiroaki
Chief Administrative Judge	NAKAKI Tsutomu
Chief Administrative Judge	TSUNODA Shinji

The 32nd Board of Trial and Appeal (Electronic Components)

Title	Name
Director of the 32nd Board of Trial and Appeal	WAKUI Tomonori
Chief Administrative Judge	TAKAHASHI Masayuki
Chief Administrative Judge	UEMAE Mitsuji
Chief Administrative Judge	KIMURA Takatoshi

The 33rd Board of Trial and Appeal(Digital Communications and Electric Power Distribution)

Title	Name
Senior Director of the 33rd Board of Trial and Appeal	DOI Hitoshi
Chief Administrative Judge	MARUYAMA Takamasa

The 34th Board of Trial and Appeal (Designs)

Title	Name
Senior Director of the 34th Board of Trial and Appeal	MAEHATA Saori
Chief Administrative Judge	TOMINAGA Takashi
Chief Administrative Judge	WATANUKI Koichi
Chief Administrative Judge	ITO Hiroyuki

The 35th Board of Trial and Appeal (Trademarks: Chemicals and Foodstuffs)

Title	Name
Senior Director of the 35th Board of Trial and Appeal	NEGISHI Katsuhiro
Chief Administrative Judge	MANABE Nobuyuki
Chief Administrative Judge	YAMADA Kazuhiko

The 36th Board of Trial and Appeal (Trademarks: Machinery and Electric Appliances)

Title	Name
Director of the 36th Board of Trial and Appeal Director of the Litigation Affairs Office	TAKAHASHI Koji
Chief Administrative Judge	YAMADA Hiroyuki
Chief Administrative Judge	OIDE Masao

The 37th Board of Trial and Appeal (Trademarks: Textiles and General Merchandise)

Title	Name
Director of the 37th Board of Trial and Appeal	OHASHI Yoshinari
Chief Administrative Judge	ITAYA Reiko

The 38th Board of Trial and Appeal (Trademarks: Industrial Services and General Services)

Title	Name
Director of the 38th Board of Trial and Appeal	KOBAYASHI Masakazu
Chief Administrative Judge	OSHIMA Yasuhiro
Chief Administrative Judge	HAMADA Sayoko

[Last updated 1 April 2026]