Barr Pharmaceuticals, Inc. (NYSE: BRL) today confirmed that its subsidiary, Barr Laboratories, Inc., has initiated a challenge of the patents listed by Amgen Inc. in connection with its Sensipar(R) Tablets (cincalcet hydrochloride), 30mg, 60mg and 90mg.
Barr's Abbreviated New Drug Application (ANDA) containing a paragraph IV certification for a generic Sensipar product was received as acceptable for filing by the U.S. Food & Drug Administration (FDA) on March 10, 2008, the first date the FDA could accept an ANDA with a paragraph IV certification for this product. Following receipt of the notice from the FDA that Barr's ANDA had been accepted for filing, Barr notified the New Drug Application (NDA) and patent holder
The details can be read here.
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