Kostis Hatzitaskos

Kostis Hatzitaskos VP Antitrust Cornerstone Research
Vice President
Organization Profile
Professional Biography

Kostis Hatzitaskos coheads Cornerstone Research’s antitrust and competition practice. Citing his econometrics expertise and significant experience analyzing large datasets, Who’s Who Legal has recognized Dr. Hatzitaskos as a future leader in the competition field, describing him as “a great young economist, great communicator, and a pleasure to work with.”

Dr. Hatzitaskos leads merger review teams for merging parties and government agencies in investigations, both in the United States and internationally. He has extensive experience in all phases of merger review, including lead trial roles on behalf of the government on U.S. v. Aetna/Humana and FTC v. Wilhelmsen/Drew, and on behalf of the merging parties in T-Mobile/Sprint and FTC v. Sysco/U.S. Foods.

His civil litigation experience involves class certification, liability, and damages issues in complex commercial litigation across competition and intellectual property matters. He led a team supporting Dr. Matthew Lynde in the landmark Microsoft v. Motorola trial, which addressed the determination of reasonable and nondiscriminatory (RAND) royalty rates.

Dr. Hatzitaskos has coauthored multiple publications on economic methods and the role of experts in antitrust and competition matters, including chapters in reference books and handbooks published by the ABA Section of Antitrust Law. A regular speaker and moderator at specialist and scholarly conferences, Dr. Hatzitaskos has participated in panels at Stanford, Fordham, Northwestern, and George Washington Universities. As of 2018, he is a member of the editorial board of the ABA’s Antitrust Source.

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