Expertise

Imaging Device, Image Processing, Medical Device, Analyzing Device, Illuminating Device, Semiconductor Device, Wireless Communication, Traffic Management, Business Method, Computer Memory Management, Numerical Control, Industrial Robot, Fuel Battery, Automated Control, Resin Molding, Material Engineering, etc.

Takeshi Takamatsu represents several large multinational companies in Japanese patent prosecution matters, encompassing a wide variety of technologies. He earned a bachelor's degree in Electrical Engineering at Tohoku University in 1974 and worked from 1976 to 1999 at the Japan Patent Office as a Patent Examiner and a Senior Appeal Examiner. He registered as a Patent Attorney in 1999 and joined in Koh-Ei Patent Firm in 2008.

Expertise

Electrical and Electronic Engineering, Semiconductor Device, Semiconductor Manufacturing Apparatus, Light Emitting Diode, Solar Cell, Flat Panel Display, Fuel Cell, Secondary Battery, Charge/Discharge Control of Secondary Battery, Inorganic Materials, Metal Materials

Ken Haseyama is a representative partner of the firm, and represents several large multinational companies in Japanese patent prosecution matters, encompassing a wide variety of technologies. He earned a master's degree in Tokyo Institute of Technology in 1991 and worked from 1991 to 2019 at the Japan Patent Office as a Patent Examiner and a Senior Appeal Examiner. He also worked as a Judicial Research Official at the Intellectual Property High Court from 2014 to 2016. He registered as a Patent Attorney and joined in Koh-Ei Patent Firm in 2020.

Expertise

Mechanical Engineering, Production Engineering, Motor, Battery, Power Control Unit, Intelligent Power Unit, Hybrid System, Transmission, Control System, Motorbike, etc.

Shinya Motoyama, a partner of the firm, specializes in Mechanical Engineering. He became knowledgeable on patent systems abroad during his career on foreign patent prosecution. He earned a master's degree in Mechanical Engineering at Yokohama National University in 2003, and registered as a Patent Attorney that same year. He joined in Koh-Ei Patent Firm in 2014.

Expertise

Polymer Material, Novel Compound, Inorganic Catalyst, Semiconductor Resist Material, Surface Treatment Material, Toner for Development, Optical Film, Glass, Lubricant Oil, Fibrous Material, etc.

Hidetaka Ota has more than 15-years experience in preparing and prosecuting patent applications both in Japan and foreign countries. He specializes in Chemistry and Material Engineering. He earned a master's degree in Osaka University in 1998, and registered as a Patent Attorney in 2015. He joined in Koh-Ei Patent Firm in 2015.

Expertise

Optical Film, Semiconductor Resist Material, Color Material, Secondary Battery, Glass, Carbon Fiber Composite Material, Paint, Metallic Heat Treatment, Fuel Cell, etc.

Kenta Watanabe has long-term experience with preparing patent applications in Japan. He earned a master’s degree in International Development Engineering at Tokyo Institute of Technology in 2005. He registered as a Patent Attorney in 2020. He joined in Koh-Ei Patent Firm in 2008.

Expertise

Information and Communication, Software, Imaging Device, Medical Device, General Industrial Machinery, etc.

Kosuke Nishio represents several large multinational companies in Japanese patent prosecution matters, encompassing a wide variety of technologies. He earned a bachelor's degree in Faculty of Science and Engineering Department of Management System Engineering at Waseda University in 2004 and registered as a Patent Attorney in 2005 and joined in Koh-Ei Patent Firm in 2019.

Expertise

Mechanical Engineering，Automobile，Automotive Parts，Industrial Machine，Control System，Information Processing

Akinao CHIBA represents several large companies in Japanese patent prosecution matters, encompassing a wide variety of technologies. He earned a bachelor's degree in Faculty of Science and Engineering Mechanical Engineering at, Nihon University in 2008 and registered as a Patent Attorney in 2020 and joined in Koh-Ei, P.C. in 2024.

Expertise

Mechanical Engineering, Automobile, Motor, Industrial Machine, Injection Molding, Image Processing, etc

Tatsuya Kobayashi specializes in Mechanical Engineering. He became knowledgeable on patent systems abroad during his career on foreign patent prosecution. He earned a master's degree in Mechanical Engineering at Keio University in 2017, and registered as a Patent Attorney in 2018. He joined in Koh-Ei Patent Firm in 2021.