The Standards for Class-certification Expert Testimony After In re Hydrogen Peroxide Antitrust Litigation

The Third Circuit’s decision in In re Hydrogen Peroxide Litigation has had a significant impact on the standards applied to economic testimony. Edgeworth CEO John Johnson – the author of this article – consulted in support of the appeal of this widely cited case. In this publication, Dr. Johnson offers his analysis of the ruling, and his opinion regarding the impact of the decision on economic evidence used in future litigation.

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