LONDON--AstraZeneca PLC (AZN), a global, innovation-driven biopharmaceutical business, said Monday it has entered into a settlement agreement in its U.S. patent infringement litigation against Watson Laboratories, Inc., Actavis, Inc. (ACT), and EGIS Pharmaceuticals (PLC (EGIS.BU) regarding Watson's proposed rosuvastatin zinc product.

MAIN FACTS:

-Watson, a successor of Cobalt, also agreed not to further appeal a decision by the U.S. Court of Appeals for the Federal Circuit that upheld the validity and enforceability of the CRESTOR(R) (rosuvastatin calcium) substance patent.

-Shionogi is also a party to the settlement agreement.

-Under the agreement, Watson and EGIS concede that the CRESTOR substance patent is valid, enforceable and would be infringed by Watson's rosuvastatin zinc product and its rosuvastatin calcium product.

-Settlement agreement permits Watson to begin selling its generic version of CRESTOR and its rosuvastatin zinc product beginning May 2, 2016, at a fee to AstraZeneca of 39% of net sales of Watson's products until the end of pediatric exclusivity on July 8, 2016.

-Entry date could be earlier and the fees eliminated in certain circumstances.

-All claims and counterclaims will be dismissed in a consent judgment entered by the United States District Court for the District of Delaware; all other terms remain confidential.

-Substance patent protecting CRESTOR expires on Jan. 8, 2016, and the pediatric exclusivity period expires on July 8, 2016.

-AstraZeneca will file the settlement agreement with the United States Federal Trade Commission and United States Department of Justice.

-AstraZeneca shares closed Friday at 3236 pence valuing the company at 40.39 billion pounds.

-Write to Ian Walker at ian.walker@dowjones.com

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