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David Barth has over 20 years of experience studying alleged and admitted anticompetitive conduct. He specializes in evaluating firms’ behavior and market outcomes in class certification, liability, and damages analyses. His expertise spans cartel and monopolization cases. He leads project teams that analyze data and review discovery materials, working with counsel and testifying experts through all phases of litigation. He has significant courtroom experience distilling complex economic and econometric analysis into trial exhibits, testimony, cross-examination, and client argument. He also provides client support on summary judgment, Daubert, and discovery issues.


PhD, Economics, Northwestern University

MA, Economics, Northwestern University

BA, Economics (with distinction and departmental honors), Stanford University

Selected Work

Selected Experience

Monopolization and vertical restraints

  • Provided expert testimony on behalf of the plaintiff in Pacific Surf Designs v. WhiteWater West Industries, Ltd. et al., an alleged monopolization case involving sheet wave machines.
  • In United States et al. v. Google LLC, supported multiple testifying experts on behalf of the Department of Justice.
  • Supported liability and damages expert on behalf of the plaintiff in Cedar AI Inc. v. Railcar Management, LLC, et al. regarding antitrust counterclaims to intellectual property monopolization and exclusionary conduct involving transportation management systems for short line railroa
  • In Federal Trade Commission v. Qualcomm, an alleged monopolization case, supported testifying expert on behalf of the Federal Trade Commission.
  • Provided support for expert testimony on behalf of American Express in its litigation with the Department of Justice and on subsequent related matters.
  • In Novell, Inc. v. Microsoft Corp., supported testifying experts on behalf of the plaintiff regarding issues associated with liability, causation, and damages.
  • In United States and State of Texas v. United Regional Health Care System, on behalf of the Department of Justice, supported analysis of the competitive effects of United Regional's exclusionary contracts with health insurers.

Price-fixing and horizontal agreements


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