petent attornyes

Brief background description

Graduated from Kansai University with a degree of Engineering in Chemistry.
Obtained a Master's degree of Engineering in Chemistry from the Graduate School of Kansai University

Prior to cofounding OMNI International Patent Law Office,
Koyama worked for an International Patent Law Office in Osaka,
engaging in preparing and prosecuting in domestic and foreign patent applications,
providing legal opinion on validity(patentability) and infringement, appeals, and lawsuits.

Koyama was qualified for Patent Attorney in 2003 (No.13058), and Specific IP Litigation Attorney in 2006,
and cofounded OMNI International Patent Law Office in 2010.

Area of expertise

1.Physical chemistry, Chemical engineering, Organic chemistry, Inorganic chemistry, Applied physics

2.Handled Technology

  • Organic chemistry (Pressure-sensitive adhesive, Adhesive, Coating material, Plastics molding)

  • Organic chemistry (Fluorine compound, etching agent)

  • Chemical process, Chemical apparatus (reaction apparatus, bioreactor)

  • Lithium-ion battery

  • Liquid crystal display device, Organic EL displays, Optical film

  • Semiconductor device

Mainly handled Practice Areas

1.Preparing and prosecuting in domestic and foreign patent, design, and trademark applications

2.Legal opinions on validity(patentability) and infringement, License negotiation and Advisory contract

3.Research services on domestic and foreign matters


  • Administrative Litigation Case Number Heisei19(Gyo-ke)10148(Intellectual Property High Court)
  • Administrative Litigation Case Number Heisei20(Gyo-ke)10162(Intellectual Property High Court)
  • Civi Litigation Case Number Heisei24(Wa)26304(Tokyo District Court)
Working languages
  • Japanese, English
Japan Patent Attorneys Association (JPAA)
Researcher in Central Intellectual Property Laboratory (2008-2011)
Japan Intellectual Property Arbitration Center(JIPAC)
Asian Patent Attorneys Association(APAA)
Kansai Patent Attorneys Study Group (KTK)
Organizer of International group (2005)