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 on all aspects of antitrust related to M&A, investigations, litigation and competitor collaborations. Her practice encompasses the full spectrum of cross border transactions, including mergers, acquisitions, divestitures, and joint ventures, and she regularly advises Japanese companies seeking to expand operations overseas, and represents foreign corporations and investors seeking business opportunities within Japan. 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 corporate governance. Over the years, Yumiko has acquired substantial and practical insight on Western and Japanese business customs, and by drawing on this experience, can assist clients in realizing their strategic business objectives and goals.

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, Government Procurement Review Board (2014-Present)
Director, Japan Competition Law Forum (2014-Present)
Speaker, "Sell or Repel - Pushing the Boundaries of Legitimate Advertising," Annual Conference of the International Bar Association (2014)
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, 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)
Member, Committee on Research of Collaborations Among Competitors, Ministry of Economy, Trade and Industry of Japan (2011)


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