Hannah C. L. Ha: Lawyer with Mayer Brown JSM

Hannah C. L. Ha

Phone+852 2843 4378

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Experience & Credentials

Practice Areas

  • Antitrust & Competition
  • Corporate & Securities
  • Financial Institutions M&A
  • Mergers & Acquisitions
  • Private Equity / Venture Capital
  • Litigation & Dispute Resolution
Contact InfoTelephone: +852 2843 4378
Fax: +852 2103 5968
EducationThe University of Hong Kong (LL.B.); The University of Hong Kong (PCLL); The University of Warwick (M.B.A.)
Admitted1992, Hong Kong; 1992, England and Wales; 1994, Australia, Tasmania; 1996, Australia, Victoria; 1996, Australia, New South Wales; 1996, Australia, Queensland; 1998, New Zealand; 2003, New York


Standards and Development Committee, Hong Kong Society of Notaries

Greater China Legal Affairs Committee, Law Society of Hong Kong

Foreign Lawyers Committee, Law Society of Hong Kong

Member, the Expert Consultative Group of the Investing Across Borders project sponsored by World Bank Group

Member, Competition Law Working Group, Association of China-Appointed Attesting Officers

Member, New York Bar Association

Member, Chartered Institute of Arbitrators

LanguagesEnglish; Cantonese; Mandarin

Hannah is extremely dedicated and competent. It was an enriching experience to work with her, says an in-house counsel.

IFLR 1000, 2014

Hannah is a partner of Mayer Brown JSM. Hannah co-heads the firm's Antitrust & Competition practice in Asia which has consistently been ranked by Chambers Asia as one of the leading international practice teams for China antitrust since 2009. Hannah has more than a decade's experience in advising client on merger control and other antitrust issues in China covering various industry sectors. She also assisted clients to role out antitrust compliance programme and has extensive experience in foreign direct investment in China, cross-border mergers and acquisitions, private equity transactions and general corporate and commercial matters.

Hannah is widely recognised throughout the industry, having recently won the Best in Competition and Antitrust award at Euromoney LMG's Asia Women in Business Law Awards 2013, and is listed in Euromoney's Expert Guides - Competition and Antitrust 2014. She has also been named leading lawyer for Mergers and Acquisitions in the 2013 edition of Expert Guides: Women in Business Law; leading Corporate/M&A Lawyer by Chambers Asia 2011-2013 and leading lawyer for Antitrust & Competition work in China by Chambers Asia Pacific 2009-2012, IFLR1000 2011-2014 and PLC Which Lawyer?.


Documents by this lawyer on Martindale.com

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What Do Employers Need to Know About Competition Law? (Episode 9 - Group Boycotts)
Hannah C. L. Ha,John M. Hickin, February 26, 2015
In the previous episode of this series, Mayer Brown JSM discussed how a non-solicitation agreement between competitors differs from the typical restrictive covenants in an employment contract. Colin, now feeling quite learned, is ready to learn more...

What Do Employers Need to Know about Competition Law? (Episode 7 - Non-Solicitation Agreements)
Hannah C. L. Ha,John M. Hickin, February 26, 2015
In the previous episode of this series, Mayer Brown JSM discussed the implications of sharing sensitive HR information when the Competition Ordinance comes into force. Colin is now puzzled by the potential problems relating to non-solicitation agreements...

At Long Last: Draft Hong Kong Competition Law Guidelines Published
Hannah C. L. Ha,John M. Hickin, October 14, 2014
The Hong Kong Competition Commission (the “Commission”) today published long-awaited draft implementation guidelines (the “Guidelines”) to the Competition Ordinance (Cap. 619) (the “CO”).

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Office Information

Hannah C. L. Ha

10 Chater Road, Central
Hong Kong 

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