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Global Leader

Competition - Economists 2019

Professional Biography

WWL Ranking: Recommended

WWL says

William Choi is an “extremely intelligent” economist commend sources, who highlight his “persuasive expert reports” adding he is “an excellent and unflappable expert witness”.


Dr William Choi is an experienced economist and statistician who assists organisations and governments in solving complex and challenging issues in the marketplace and the courtroom. He brings over 20 years of professional experience serving as an expert witness on matters related to class certification, antitrust, healthcare, securities litigation, statistics, econometrics, valuation of financial products and intellectual property. He has testified at deposition, trial and arbitration. His testimony and consulting experience have covered a range of industries, including automotive, mobile devices, telecommunications, online commerce, artificial intelligence, virtual reality, e-cigarettes, opioids, apparel, food products, software and consumer appliances.

William also assists companies with improving their competitive position in the marketplace. In such matters, he provides companies with insights into their data using advanced economic and statistical analyses to design optimal pricing models, inventory management models, claims analysis and intellectual property valuation. In this capacity, he has assisted clients across numerous industries, including retail, pharmaceuticals, flash memory, restaurants, health insurance and alcoholic beverages. He also previously was retained by the Department of Justice as an outside statistician related to its investigation of mortgage fraud that resulted in the largest settlements in US history.

William has previously taught economics courses at Duke University and UCLA. He also has taught at conferences, including programs on class certification and damages, economics, valuation, statistics, game theory, licensing, and finance at annual meetings of the American Bar Association, the Licensing Executives Society and other associations.

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