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AstraZeneca Sues Handa Again Over Seroquel XR

Law360 (October 29, 2008, 12:00 AM EDT) -- AstraZeneca Pharmaceuticals LP hit Handa Pharmaceuticals LLC with a second infringement suit in three months Tuesday over its bid to produce a generic version of Seroquel XR.

The complaint, filed in the U.S. District Court for the District of New Jersey, follows Handa's bid to amend its abbreviated new drug application for a generic extended-release form of quetiapine fumarate.

The patents-at-issue are U.S. Patent numbers 4,879,288 and 5,948,437, which expire in 2011 and 2017, respectively, and cover the active ingredient and its extended-release method.

In the...
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