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Tsunenori Hayashi
Patent Attorney [Registered No. 9451]
Advisory Capacity -
Kenji Doi
Patent Attorney [Registered No. 9452]
Representative Partner -
Koichiro Matsueda
Patent Attorney [Registered No. 10635]
Partner -
Takeo Miyazawa
Patent Attorney [Registered No. 14682]
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Takeshi Sakanaka
Patent Attorney [Registered No. 18811]
Partner -
Atsushi Kawase
Patent Attorney [Registered No. 20001]
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Kiyoshi Manabe
Patent Attorney [Registered No. 10533]
Hayashi,Doi & Associates STAFF

Tsunenori Hayashi
林 恒徳
Advisory Capacity
Patent Attorney [Registered No. 9451]
Specific Infringement Suit Qualified
Professional Experience | Patent, Trademark Act in Advisory Capacity for Intellectual Property at the University Of Aizu (2012-) |
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Technical Practice Areas | Information data processing, System control, Game device (Image processing) and others | |
Education | B.S., Electrical Engineering, Tokyo University of Agriculture &Technology U.S. patent practice trainee at the U.S law firm (Staas & Halsey) Completed the Patent Office Academy at the U.S. Patent Trademark Office during the trainee period |
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Job History | FUJITSU LIMITED(Intellectual Property Division) U.S. patent practice trainee at the law firm Founded "Hayashi & Associates" Founded "Hayashi, Doi & Associates" Part-time Lecturer at Japan Women’s University(2010-2014) Appointed Professor of the University of Aizu Part-time Lecturer at the University of Aizu (2014 -) (Intellectual Property) |
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Others | Mr. Hayashi’s interests: Photography, Collection of photo books, Appreciation ofArt works at Photo Exhibitions and Art Museums Currently Student at Photography Course of Kyoto University of Art & Design Homebuilt PC and Audio |
Hayashi,Doi & Associates STAFF

Kenji Doi
土井 健二
Representative Partner
Patent Attorney [Registered No. 9452]
Specific Infringement Suit Qualified
Professional Experience | Patent, Design, Evaluate essential patent, Appraisal of validity and infringement | |
Technical Practice Areas | Electrical and Computer technology, including Electronics, IT (Computer, Semiconductor, etc.) and Computer software (Image processing, Middleware) | |
Education | B.S., Electronics Engineering, Kyushu University | |
Job History | FUJITSU LIMITED(Intellectual Property Division, Liaison Division) U.S. patent practice trainee at the law firm Fujitsu Washington, D.C. Liaison Office Founded Doi & Associates Founded Hayashi, Doi & Associates |
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Others | Mr. Doi specializes in IT related products, such as semiconductors, electronics, software, and printers. He uses his experience in intellectual property work in the corporate world and at a law firm in the U.S. to provide the best quality service to our clients. Mr. Doi enjoys playing tennis. Activities: Lecturer at Softic (Software Information Center) Lecturer at Japan Intellectual Property Association Lecturer of in-service training at Education Institute of Japan Patent Attorneys Association Essential Patent Evaluator of Terrestrial Digital Broadcasting |
Hayashi,Doi & Associates STAFF

Koichiro Matsueda
松枝 浩一郎
Partner
Patent Attorney [Registered No. 10635]
Professional Experience | Patent, Utility Model, Design, Trademark | |
Technical Practice Areas | Electrical and Computer technology including Electro mechanics and computer software | |
Education | B.S, Applied Physics, Tohoku University Master of Graduate school of Law, Tohoku University |
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Job History | Nippon Credit Bank Nakamura & Partners Joined Hayashi, Doi & Associates |
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Others | Patent attorney Mr. Matsueda works at the Sendai office ? a branch of the main office in Shin-Yokohama ? and dedicates himself to clients in Sendai, Miyagi prefecture, and other parts of the Tohoku region. With progress in transportation and communication networks making it easier for those in regions distanced from Tokyo to approach and ask patent offices in the metropolis to file patent applications for them, Mr. Matsueda always makes efforts to provide clients in Tohoku detailed services which can only be accomplished locally. Activities: Auditor, Tohoku Branch of Japan Patent Attorneys Association Business Support Advisor, Tohoku Branch of Organization for Small & Medium Enterprises and Regional Innovation Registered Specialist of Miyagi Organization for Industry Promotion Assigned Specialist of Miyagi Institute of Invention and Innovation Director of Intellectual Property Support Team, Tohoku Economic Federation |
Hayashi,Doi & Associates STAFF

Takeo Miyazawa
宮澤 丈夫
Patent Attorney [Registered No. 14682]
Professional Experience | Patent | |
Technical Practice Areas | Electrical Engineering practices including optical communication, photonics devices, and semiconductor devices. | |
Education | B.S., Electronics Engineering, Waseda University M.D., Electronics Engineering, Graduate school of Waseda University Ph.D., Electronics Engineering, Graduate school of Waseda University |
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Job History | NIPPON TELEGRAPH AND TELEPHONE CORPORATION (NTT) Joined Hayashi, Doi & Associates |
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Others | Dr. Miyazawa’s interests: Bird-watching, Swimming and Reading |
Hayashi,Doi & Associates STAFF

Takeshi Sakanaka
阪中 剛史
Partner
Patent Attorney [Registered No. 18811]
Professional Experience | patent | |
Technical Practice Areas | Software (Application, Middleware, OS etc.), Information Technology including Control, etc., Mechatronics | |
Education | B.S.,Engineering, Tokyo University of Science | |
Job History | Daiwa Institute of Research Ltd. Asa International Patent Firm Joined Hayashi, Doi & Associates |
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Others | Mr. Sakanaka specializes in the field of information processing, which includes software, OS, and networks. As a system engineer, he experienced developing various system architectures. Mr. Sakanaka strives to add extra value to inventions. |
Hayashi,Doi & Associates STAFF

Atsushi Kawase
川瀬 敦史
Patent Attorney [Registered No. 20001]
Professional Experience | Patent | |
Technical Practice Areas | Software, Radio Communication | |
Education | B.S.,Earth science, Waseda University | |
Job History | Software developer Ltd. Joined Hayashi, Doi & Associates |
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Others | Mr. Kawase treasures time with his family. |
Hayashi,Doi & Associates STAFF

Kiyoshi Manabe
眞鍋 潔
Patent Attorney [Registered No. 10533]
Professional Experience | Patent | |
Technical Practice Areas | Semiconductor,photonics, spintronics, circuit boad | |
Education | B.S., Physics, Tohoku University | |
Job History | Japan Patent Office Techno Pal patent firm Joined Hayashi, Doi & Associates |
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Others | Mr. Manage’s interests: Playing Game of Go and Shogi (Japanese Chess). |