Drug Patent Expirations in May 2011

Drug Patent Expirations in May 2011

Drug Patent Expirations in May 2011

*Drugs may be covered by multiple patents

Tradename Applicant Generic Name Patent Number Patent Expiration
OPTIVAR Meda Pharms azelastine hydrochloride 5,164,194*PED May 1, 2011
ASTELIN Meda Pharms azelastine hydrochloride 5,164,194*PED May 1, 2011
ENTOCORT EC Astrazeneca budesonide 6,423,340*PED May 15, 2011
ALORA Watson Labs estradiol 5,227,169 May 17, 2011
ALORA Watson Labs estradiol 5,122,383 May 17, 2011
ALORA Watson Labs estradiol 5,212,199 May 17, 2011
FORTOVASE Hoffmann La Roche saquinavir 5,196,438*PED May 19, 2011
INVIRASE Hoffmann La Roche saquinavir mesylate 5,196,438*PED May 19, 2011
INVIRASE Roche saquinavir mesylate 5,196,438*PED May 19, 2011
CARDIZEM CD Biovail diltiazem hydrochloride 5,470,584 May 20, 2011
CARDIZEM CD Biovail diltiazem hydrochloride 5,286,497 May 20, 2011
RESCULA Sucampo Pharms unoprostone isopropyl 5,208,256 May 21, 2011
AMITIZA Sucampo Pharms lubiprostone 5,317,032 May 31, 2011

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