The antitrust analysis of product hopping is nuanced. The conduct, which consists of a drug company's reformulation of its product and encouragement of doctors to switch prescriptions to the reformulated product, sits at the intersection of antitrust law, patent law, the Hatch-Waxman Act, and...

In FTC v. Actavis, the Supreme Court held that a brand payment to a generic to delay entering the market could have "significant anticompetitive effects" and violate the antitrust laws. In a narrow, formalistic ruling, the court in In re Lamictal held that such payments were limited to cash. On...

When a brand drug firm reformulates its product, encourages doctors to prescribe the new version, and can offer no justification other than harming generic rivals, antitrust liability should be on the table. We thus disagree with Jack E. Pace III and Kevin C. Adam, who would limit antitrust...