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DRL files lawsuit against Pfizer

HYDERABAD FEB. 24. The pharma-major Dr. Reddy's Laboratories (DRL) has filed a lawsuit seeking declaratory judgment against Pfizer in a U.S. district court regarding its "abbreviated new drug application'' (ANDA) for "Sertraline HCl.''

The lawsuit seeks a declaratory judgment that the claims of certain Pfizer patents were invalid and/or not infringed, a DRL release said here today.

"DRL has filed an ANDA with the U.S. Food and Drug Administration (USFDA) for Sertraline HCl tablets, equivalent to 25, 50 and 100 mg base, with a paragraph IV certification on four of the five patents listed on the orange book,'' it said.

PTI

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