Annual Drug Patent Expirations for OPANA+ER
Opana Er is a drug marketed by Endo Pharms and is included in two NDAs. There are ten patents protecting this drug and six Paragraph IV challenges.
Drug patent litigation for OPANA ER.
This drug has two hundred and seventeen patent family members in thirty-two countries.
The generic ingredient in OPANA ER is oxymorphone hydrochloride. Additional details are available on the oxymorphone hydrochloride profile page.
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