Shire Sues Barr, Impax Again Over Adderall Patents

By Erik Larson (October 21, 2005, 12:00 AM EDT) -- Barr Laboratories and Impax Laboratories, both of which are currently involved in litigation with Shire Laboratories over patents for Adderall, have both filed new Abbreviated New Drug Applications for the ADHD drug, prompting another lawsuit....

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