Schizophrenia :: Barr Receives Tentative Approval for a Generic Version of ZYPREXA, Zydis

Barr Pharmaceuticals, Inc. (NYSE: BRL) today announced that its subsidiary, Barr Laboratories, Inc. has received tentative approval from the U.S. Food and Drug Administration (FDA) for its generic version of Eli Lilly and Company’s ZYPREXA(R) Zydis(R) (Olanzapine) Orally Disintegrating Tablets, 5mg, 10mg, 15mg and 20mg.

The patent listed in the Orange Book for ZYPREXA Zydis expires on April 23, 2011. Barr’s Abbreviated New Drug Application (ANDA) alleges that the Orange Book listed patent is invalid, unenforceable and/or would not be infringed by Barr’s product.

Barr filed its ANDA containing a paragraph IV certification for a generic ZYPREXA Zydis product with the FDA in August 2004, and received notification of the application’s acceptance for filing in September 2004. Following receipt of the notice from the FDA, Barr notified Lilly Industries Limited, the patent owner, and Eli Lilly & Company, the New Drug Application (NDA) holder. On December 1, 2004, Lilly Industries Limited and Eli Lilly & Company filed suit in U.S. District Court, Southern District of Indiana to prevent Barr from proceeding with the commercialization of its product, formally initiating the patent challenge process under the Hatch-Waxman Act.

ZYPREXA (olanzapine) is indicated for the treatment of schizophrenia and for the short-term treatment of acute manic episodes associated with Bipolar I disorder. The product had annual sales of approximately $246 million for the twelve months ended September 2006, based on IMS sales data.

A tentative approval reflects FDA’s preliminary determination that a generic product satisfies the substantive requirements for approval, subject to the expiration of all statutorily imposed non-approval periods. A tentative approval does not allow the applicant to market the generic drug product.

About Barr Pharmaceuticals, Inc.

Barr Pharmaceuticals, Inc. is a global specialty pharmaceutical company that operates in more than 30 countries worldwide and is engaged in the development, manufacture and marketing of generic and proprietary pharmaceuticals, biopharmaceuticals and active pharmaceutical ingredients. A holding company, Barr operates through its principal subsidiaries: Barr Laboratories, Inc., Duramed Pharmaceuticals, Inc. and PLIVA d.d. and its subsidiaries. The Company markets more than 120 generic and 25 proprietary products in the U.S. and more than 550 products globally outside of the U.S.

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