Plaintiff state sued pharmaceutical manufacturer Actavis plc and its New-York based subsidiary Forest Laboratories seeking an injunction to prevent them from withdrawing the Alzheimer�s drug Namenda from the market and switching patients to a once daily version, Namenda XR. Namenda�s patent will expire in July 2015 and the company thereafter faces competition from generic drug makers. According to the complaint, Actavis planned to force patients to switch unnecessarily to Namenda XR because it had a longer patent. Once patients switch to Namenda XR, it would be difficult for patients to switch drugs again once generics become available. Normally, state substitution laws allow pharmacists to dispense generics without being forced to obtain physician approval. According to the complaint, even though Namenda and Namenda XR have the same active ingredient, pharmacists will not be allowed to offer generic Namenda to patients taking Namenda XR; a doctor�s approval would be required to make that switch. This means that most Alzheimer�s patients and their families will remain on Namenda XR. The lawsuit alleges that, by forcing patients to switch to Namenda XR, Actavis is gaming the regulatory system that governs pharmaceuticals and violating antitrust laws designed to encourage competition and keep prices down for consumers. In December 2014, the district court enjoined Actavis from ceasing production of Namenda, and the injunction was affirmed by the Second Circuit in May 2015.Plaintiff state sued pharmaceutical manufacturer Actavis plc and its New-York based subsidiary Forest Laboratories seeking an injunction to prevent them from withdrawing the Alzheimer’s drug Namenda from the market and switching patients to a once daily version, Namenda XR. Namenda’s patent will expire in July 2015 and the company thereafter faces competition from generic drug makers. According to the complaint, Actavis planned to force patients to switch unnecessarily to Namenda XR because it had a longer patent. Once patients switch to Namenda XR, it would be difficult for patients to switch drugs again once generics become available. Normally, state substitution laws allow pharmacists to dispense generics without being forced to obtain physician approval. According to the complaint, even though Namenda and Namenda XR have the same active ingredient, pharmacists will not be allowed to offer generic Namenda to patients taking Namenda XR; a doctor’s approval would be required to make that switch. This means that most Alzheimer’s patients and their families will remain on Namenda XR. The lawsuit alleges that, by forcing patients to switch to Namenda XR, Actavis is gaming the regulatory system that governs pharmaceuticals and violating antitrust laws designed to encourage competition and keep prices down for consumers. In December 2014, the district court enjoined Actavis from ceasing production of Namenda, and the injunction was affirmed by the Second Circuit in May 2015.