Co-Lead Counsel for Direct Purchasers Alleging That Merck Monopolized the U.S. Mumps Vaccine Market

Matter ongoing

In re Merck Mumps Vaccine Antitrust Litigation, 13-cv-03555 (E.D. Pa.)

Robins Kaplan serves as court-appointed co-lead counsel on behalf of a proposed class of direct purchasers of the mumps vaccine from Merck. Plaintiffs allege that Merck unlawfully monopolized the U.S. market for the mumps vaccine by engaging in a decade-long scheme to exclude competing manufacturers through false and misleading claims on its product labels. Merck annually derives hundreds of millions of dollars of revenue from its mumps vaccine. Litigation remains ongoing.

Past results are reported to provide the reader with an indication of the type of litigation we practice. They do not and should not be construed to create an expectation of result in any other case, as all cases are dependent upon their own unique fact situation and applicable law.

Kellie Lerner


Co-Chair, Antitrust and Trade Regulation Group;
Pronouns: she/her

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