On September 15, in New York v. Actavis PLC et al., New York State Attorney General Eric Schneiderman filed an antitrust suit against Actavis PLC and Forest Laboratories LLC, accusing the companies of discontinuing a popular dementia drug, Namenda IR, in order to switch patients to a newer version of the drug, Namenda XR, in a strategy known as “product hopping” or “forced switch.” The suit alleges that the purpose of the switch was to move patients onto a drug with a longer patent in an effort to eliminate competition. The argument is that switching patients to Namenda XR will destroy the market for the generic form of Namenda IR because of the dramatically increased burden, cost and time needed to switch patients back to the original version.