ENGLISH | 伊藤小池法律事務所


KOIKE ITO LAW OFFICE is a general practice law firm located in Chiyoda-ku, Tokyo.

We cover various practice areas, from corporate with reputation, to M&A and finance, school and education, entertainment and intellectual property, IT and internet defamation, divorce and child support money, traffic accidents and criminal cases. A team of lawyers provide one-stop service with extensive knowledge and know-how.

We provide innovative legal service which is not constrained by past cases but explores new ideas.



Practice Area

We support our clients flexibly to meet various needs such as drafting and reviewing contracts, confirmations on creating new businesses and legality, preparing various legal opinions, complying with laws and crises managements, research on the Act on the Protection of Personal Information and other laws and regulations, assisting general meetings of shareholders and the Board of Directors, transferring business, capitalization strategy, and preparing for listing. Our specialist lawyers from diverse backgrounds such as corporate legal firm provide rapid service based on extensive knowledge and experience. Our clients range from start-ups to listed companies. Depending on the amount of work and the content, you can choose the time charge basis, the fixed monthly fee or spot fee. Please feel free to contact us.
M&A and Finance
Legal affairs related to M&A, business transfer and finance, etc. are one of the firm’s focus areas. We have teamed up with lawyers from finance law firm to propose and provide optimal legal services according to the cases. We also handle due diligence regarding cross border M&A which includes many English documents and creating and reviewing English contracts.
School and Education
We have consulted over 200 cases on school issues and juvenile cases. Lead by Masaki Ito, a partner attorney who used be a metropolitan high school teacher, we have settled various kinds of legal issues: school entering issue, accident occurred at school, bullying, withdrawal from PTA etc. Please feel free to contact us.
Entertainment and
Intellectual Property
Our well-experienced lawyer in entertainment field provide practical legal advice to production companies where rock bands and pop stars belong, management office, artists, agent and etc. Please contact us about contract related to music and film, management contract, intellectual property such as copyright, internet related issue, event management etc.
IT and
Internet Defamation
We respond rapidly to online defamation including removal request, intellectual property such as copyright, Privacy right infringement etc. We have many successful results in: social network service trouble, impersonator, removal of articles regarding arrest report, removal of libel from X (former Twitter), internet bulletin board such as 5 Channel, Bakusai and others, revenge porn removal and filing criminal complaint and arrest after specifying the assailant, removal of defamation and reviews without no reasonable basis, handling defamation of screen name and etc.
Divorce, Child Support
Money and Problems
Between Men and Women
In the case of divorce, there are several issues such as living expenses until the divorce is finalized, parent-child visitation and etc. In the divorce process, there are several issues such as the distribution of property, consolation money, child custody and child support money. There are many problems to be solved in divorce cases, so please do not worry yourself, please consult with our office. We also respond to multiple issues such as claims for damages in case of: unlawful breach of promise of marriage, relation that assumes marriage despite of married person or being unwilling to marry (problems related to pregnancy/abortion), pregnancy/abortion and affiliation.
Traffic Accidents
A lawyer with experience in handling traffic accidents professionally and intensively with a major insurance company as a client is also a member of our firm. When claiming alimony or compensation for damages, there are various factors such as the ratio of negligence, disability, compensation for absence from work, etc., and the skill and experience greatly influence the result. Well-experienced lawyers in round-table negotiations, traffic arbitrations and trials etc., will represent you for the best result. Please feel free to contact us.
Criminal Case
We have handled more than 300 criminal defense cases. Regarding criminal complaints, we have been taken up many cases of prosecution on behalf of victims. In criminal defenses, in the stage before prosecution, we have many cases of release from physical restraint and non-prosecution, at trial, we have gained judgement of not guilty. We also have many cases of dismissal of detention and approval of quasi-appeal, and lay judge trials.


KOIKE ITO LAW OFFICE provides legal advice in various practices.
We provide wide range of legal service to: both domestic and foreign listed companies, pre-listing company, corporation which is just established, business which is under preparation of establishment and sole proprietor.

  • ・Financial Institution
  • ・Real Estate Industry
  • ・Aviation Industry
  • ・Drone
  • ・Restaurant
  • ・Advertising Agency
  • ・Design Company
  • ・Construction Company
  • ・Detective Agency
  • ・Waxing Salon
  • ・Esthetic Salon
  • ・Hospital
  • ・Hotel Business
  • ・Long-term Care Service Business
  • ・Home-visit Nursing Business
  • ・Welfare-related Sales Business
  • ・Entertainment Office
  • ・Music Production Company
  • ・Concert Goods Manufacturing Company
  • ・Maid Cafe
  • ・IT Company
  • ・Smartphone Advertising Industry
  • ・Application Development Company
  • ・Cryptocurrency Exchanger (in process)
  • ・Manufacturing Industry
  • ・Medical Incorporated Association


We have associate positions available. If you are interested in applying for the position, please access the link below.


KOIKE ITO LAW OFFICE is located in Yurakucho Building which is just in front of JR Yurakucho station and Tokyo Metro Hibiya station in order to provide rapid legal service to clients of domestic and foreign companies and individual.
Please feel free to visit us with your reservation.

11th Floor Yurakucho Denki Building North Tower, 1-7-1 Yurakucho, Chiyoda-ku, Tokyo, 100-0006
Business hours   10: 00-21: 00


-Business hours
 10: 00-21: 00