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Impax Laboratories, Inc.

Impax Confirms Patent Challenge Relating to RENAGEL® Tablets, 400 mg and 800 mg

Published in Medical Verdicts and Law Weekly, April 2nd, 2009

Impax Laboratories, Inc. (NASDAQ:IPXL) confirms that it has initiated a challenge of the patents listed by Genzyme Corporation in connection with its RENAGEL® (sevelamer hydrochloride) tablets, 400 mg and 800 mg.

Impax filed its Abbreviated New Drug Application (ANDA) containing a paragraph IV certification for a generic version of RENAGEL® with the U.S. Food & Drug Administration (FDA). Following receipt of the notice from the FDA that Impax’s ANDA had been accepted for filing, Impax notified the New Drug Application holder and patent owner of its paragraph IV certification.

On March 13, 2009, Genzyme filed suit for patent infringement against Impax...

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