About us

We promise work
that delivers
speed and results,
never failing to
meet your expectations.


Yukio Kobayashi & Hiroshi Yugeta

Kobayashi & Yugeta Law Office is a boutique intellectual property law firm specializing in the intellectual property field. The firm was renamed in December 2009 when Hiroshi Yugeta, a partner, joined the firm in March 2007 and later relocated to its current location in the Akasaka Hinoki Building.

Main features of the firm :

・All attorneys at the firm have extensive experience in intellectual property disputes, mainly infringement and trial revocation litigation.

・Great emphasis is placed on the speed of our legal services to keep the momentum of our clients’ business moving, so we try to respond to our clients within half a day of receiving an inquiry.

Due to these features, we have been supported by many companies and patent firms up to the present day.

In addition, although most of our work is currently in the field of intellectual property, our experience in a wide range of civil cases, from real estate to civil intervention violence, and our ability to provide services in a wide range of legal fields, as well as in the intellectual property field, is one of the reasons why many companies trust us.

We will continue to provide our clients with prompt and high-quality services, particularly in the field of intellectual property.

Kobayashi & Yugeta Law Office
Managing Partner
Senior Partner

About The Symbol


Our Symbol is derived from an abstract form of the letters “K” and “Y” which represent the initial letters of the names of our partners, Kobayashi and Yugeta. The central positioning of the “square” formed at the junction by the fusion on the K and Y represents a “place” where members in moving forward together towards a better future, our Symbol has a sharply slanting diagonal line as its e lement.


Apr. 2002
Yukio Kobayashi established the Yukio Kobayashi Law Office at Moto-Akasaka MI Building 3rd Floor, 1-3-10 Moto-Akasaka, Minato-ku, Tokyo.
Mar. 2007
Hiroshi Yugeta joined the firm as a partner.
Jan. 2008
The firm was renamed “Kobayashi Sogo Law Office.”
Dec. 2009
The firm was renamed “Kobayashi & Yugeta Law Office” and relocated to its current location at 8F Akasaka Hinoki Building, 2-10-5 Akasaka, Minato-ku, Tokyo.
Apr. 2017
Celebrated its 15th anniversary.
Apr. 2022
Celebrated its 20th anniversary.


Kobayashi & Yugeta Law Office
8th floor, Akasaka Hinoki Building, 2-10-5 Akasaka, Minato-ku, Tokyo 107-0052 Japan
Please be sure to change ※ to @ when contacting us by e-mail.
1 minute walk from Exit No. 9 [Tameike-Sanno Station]
(Tokyo Metro Ginza Line and Nanboku Line)