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Antitrust litigation - Amgen - Macleods Pharmaceuticals

Macleods Pharmaceuticals filed counterclaims against Amgen in a patent infringement case brought by the Amgen. Macleods is seeking a declaratory judgment finding that Amgen violated antitrust law by bring baseless patent litigation to keep competitors out of the market for cinacalcet hydrochloride tablets, which are used to treat parathyroid diseases.

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