(Reuters) - Allergan Plc said it and Adamas Pharmaceuticals Inc settled a patent infringement lawsuit with Amneal Pharmaceuticals over their Alzheimer's drug.
Allergan said its Forest Labs unit and Adamas had filed a lawsuit against privately owned Amneal, which was seeking regulatory approval for generic versions of Namzaric.
The drug, which has been licensed to Forest by Adamas, had U.S. sales of $12.8 million for the quarter ended June 30.
Under the settlement terms, Forest and Adamas will grant Amneal a license to market generic versions of Namzaric from January 1, 2025.
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Other terms of the settlement were not disclosed.
Allergan and Adamas have also sued Amerigen Pharmaceuticals, which seeks to market generic versions of the drug.
(Reporting by Shailesh Kuber; Editing by Anil D'Silva)