Toho International Patent&Law Office 弁理士法人 桐朋

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Patent Attorneys and Their Areas of Expertise

Yoshihiro CHIBA (Head Partner)

Curriculum Vitae
  • Graduated from Kanagawa Technical High School, Department of Electronics
  • Masters in Law, Faculty of Law, Chuo University
  • Registered Patent Attorney since 1973
Area of Expertise
General Mechanical Engineering, Electronic Engineering, Production Engineering, Design, Trademark, Opposition, Appeals, Infringement, Litigation, etc.

Shiro SAKAI (Deputy Head Partner)

Curriculum Vitae
  • Graduated from the Department of Electrical Engineering, Faculty of Science and Engineering, Meiji University
  • Registered Patent Attorney since 2004
  • Registered as Specific Infringement Lawsuit Counsel since 2012
Area of Expertise
Electric and Electronic Controls, Communication, Software, Image Processing, AI-Related Technology, Mechanical and General Structural Engineering, Production Technology, Appeals, Expert Opinions, Litigation

Takayuki SENBA

Curriculum Vitae
  • Graduated from Department of Marine Mechanical Engineering, Faculty of Engineering, University of Tokyo
  • Patent Examiner of Japan Patent Office (JPO) in 1984
  • Judicial Research Official in Intellectual Property Department of Tokyo District Court in 2005
  • Director at Board of Appeals in Appeals Department of JPO in 2009
  • Registered Patent Attorney since 2013
Area of Expertise
Mechanical and General Structural Engineering, Production Technology, Controls, Appeals, Expert Opinions, Litigation, etc.

Tomoki KUBOTA

Curriculum Vitae
  • Graduated from the Department of Electronic Engineering, Faculty of Engineering, Saitama University
  • Registered Patent Attorney since 2001
Area of Expertise
Electric and Electronic Controls, Communication, Software, AI-Related Technology, Mechanical and General Structural Engineering, Appeals, Expert Opinions

Yasuharu NAKASONE

Curriculum Vitae
  • Graduated from Department of Mechanical Engineering, Faculty of Engineering, Hosei University
  • Registered Patent Attorney since 2004
  • Registered as Specific Infringement Lawsuit Counsel since 2012
Area of Expertise
Mechanical and General Structural Engineering, Production Equipment, Medical Equipment, Appeals, Expert Opinions, Litigation

Tatsuya ICHIKAWA

Curriculum Vitae
  • Completed Masters Degree at the University of Tokyo Graduate School of Engineering (Department of Superconductivity Engineering)
  • Registered Patent Attorney since 2006
  • Registered as Specific Infringement Lawsuit Counsel since 2020
Area of Expertise
Mechanical and General Structural Engineering, Production Technology, Medical Equipment, Materials, Chemistry, Electric and Electronic Controls, Software, Design, Appeals, Expert Opinions

Keiichi IKEDA

Curriculum Vitae
  • Completed Masters Degree at Graduate School of Engineering, The University of Tokyo (Department of Electronic Engineering)
  • Registered Patent Attorney since 2010
Area of Expertise
Electric and Electronic Controls, Communication, Software, AI-Related Technology, Appeals

Kosuke SEKIGUCHI

Curriculum Vitae
  • Matriculated Keio University, Faculty of Science and Technology, Graduated from Faculty of Policy Management
  • Completed Studies at Professional Graduate School of Intellectual Property Strategy, Tokyo University of Science
  • Registered Patent Attorney since 2012
  • Registered as Specific Infringement Lawsuit Counsel since 2014
Area of Expertise
Mechanical and Structural Engineering, Software, AI-Related Technology, Design, Trademarks, Appeals

Toshiyuki KORIN

Curriculum Vitae
  • Graduate School of Engineering, Kanazawa Institute of Technology (Department of Electrical and Electronic Engineering), Doctorate of Engineering
  • Registered Patent Attorney since 2021
Area of Expertise
Mechanical and General Structural Engineering, Production Technology, Electric and Electronic Controls, Software, Appeals

Kodai KADOYAMA

Curriculum Vitae
  • Graduated from the Department of Information and Communication Engineering, Faculty of Electro-Communications, The University of Electro-Communications
  • Registered Patent Attorney since 2021
  • Registered as Specific Infringement Lawsuit Counsel since 2024
Area of Expertise
Electric and Electronic Controls, Communication, Software, AI-Related Technology, Mechanical and General Structural Engineering, Production Technology, Appeals

Masayuki HISATAKE

Curriculum Vitae
  • Completed Masters Degree at Graduate School of Engineering, The University of Osaka (Majored in Production Science)
  • Registered Patent Attorney since 2025
Area of Expertise
Mechanical and General Structural Engineering, Electric and Electronic Controls, Software, AI-Related Technology, Production Equipment, Medical Equipment, Appeals, Expert Opinions
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