Supreme Court Turns Down Appeal in Mumps Vaccine Antitrust Case

An appeals court said there was evidence of deception, but that Merck was immune because it was trying to influence the government.

The U.S. Supreme Court in Washington on Oct. 6, 2025. Madalina Kilroy/The Epoch Times

Supreme Court justices on Oct. 20 turned away a petition to consider a case accusing Merck of violating antitrust law by misrepresenting the efficacy of its mumps vaccine to the Food and Drug Administration.

Justices did not offer an explanation of the rejection of a petition from doctors who sued Merck.