Monday, November 16, 2009

Purdue Pharma sues Sun Pharma following Para IV patent filing on pain killer drug

The US based Purdue Pharma products LP and its partner Napp Pharmaceutical Group Ltd have filed a patent infringement petition against Sun Pharmaceuticals and its US arms following a para IV certification filed by the latter to manufacture and market generic version of the former's pain killer - Ryzolt - tramadol hydrochloride extended-release drug.

The details can be read here.

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