Yumiko Aoi

  • Practice Areas
  • Professional Background / Education
  • Publications / Presentations
  • Professional Activities / Accolades

Practice Areas

Yumiko Aoi is a partner in the Corporate Practice and Antitrust Practice groups of the firm. She represents international and domestic clients of all sizes in a wide range of industries, with particular focus on the tech industry. In her role as a trusted business advisor, Yumiko regularly counsels clients on general corporate and business law matters, including day-to-day preventive advice, labor and employment disputes, recalls, consumer protection, and industry-specific regulations for tech, pharma, and other clients. She regularly advises Japanese companies seeking to expand operations overseas, and represents foreign corporations and investors seeking business opportunities in Japan. Over the years, Yumiko has acquired substantial and practical insight on Western and Japanese business customs and, by drawing on this experience and expertise, can assist clients in realizing their strategic business objectives and goals. Yumiko is also active in the firm’s Pro Bono efforts, and as a member of Children’s Law Committee of the Dai-ichi Tokyo Bar Association, frequently represents disadvantaged children in need of legal assistance.

General Corporate Corporate Governance / Shareholders Meeting Regulatory Mergers and Acquisitions Real Estate Transactions Unfair Competition Prevention Law, Designs, Trademarks and Copyrights License Agreement / Technology Transfer Agreement IT, Internet and Information & Communications General Consultations on Personnel and Labor Matters Labor Litigation and Arbitration Cross-Border Transactions Foreign Direct Investment Cross-border Dispute Resolutions Asia Compliance and Internal Control White Collar Crime and Crisis Management Antitrust and Competition

Professional Background / Education

Professional Background

Asahi Koma Law Offices (formerly, Komatsu, Koma & Nishikawa)
Davis Wright Tremaine LLP (Foreign Associate)
Nishimura & Asahi (formerly, Asahi Koma Law Offices)
2009 to Present
City-Yuwa Partners


Keio University (LL.B.)
Legal Training and Research Institute
Columbia Law School (LL.M.)

Publications / Presentations

  • "Visual Guide for Anti-Monopolization Act third edition" (co-author, Chuokeizai-sha, Inc., 2010) (in Japanese)

Professional Activities / Accolades

Member, Children's Law Committee of the Dai-ichi Tokyo Bar Association (2021-)
Member, Government Procurement Review Board (2014-)
Director, Japan Competition Law Forum (2014-)
Member, Committee on Research of Collaborations Among Competitors, Ministry of Economy, Trade and Industry of Japan (2011)

■Moderator, Law Society of England and Wales/Dai-ichi Tokyo Bar Association joint seminar on "London to Tokyo: Olympic Games and the Law" (2014)
■Speaker, "Sell or Repel - Pushing the Boundaries of Legitimate Advertising," Annual Conference of the International Bar Association (2014)
■Speaker, Hawaii State Bar Association/Dai-ichi Tokyo Bar Association joint seminar on "Investment into Japan" (2012)
■Panelist, "When Enforcement Cultures Collide: Best Practice for Antitrust Compliance and Investigations in Asia," American Bar Association, Antitrust Section (2011)


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