Don't Revive Opioid Patents, Generics Maker Tells Fed. Circ.

By Dani Kass (June 5, 2018, 8:46 PM EDT) -- Kashiv Pharma LLC on Monday asked the Federal Circuit for permission to intervene in Grünenthal GmbH's patent infringement litigation over the opioid painkiller Opana ER, arguing the patents should remain invalid even though most of the original challengers have halted efforts to produce a generic version of the drug....

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