Patent Number Title Trade Name Assignee Expiration Date Therapeutic Area Structure Annual Sales of the drug in USA US4687777 Thiazolidinedione derivatives, useful as antidiabetic agents Actos Takeda Chemical Industries Ltd 18-Jan-11 Diabetes/ Hyperlipemia USD 2531.6 mn US4808616 6-substituted androsta-1,4- diene-3,17-diones Aromasin Pfizer 01-Apr-11 Hormone- dependent cancers USD 483 mn US00RE34712 Pharmaceutically useful (+)-1- (3-dimethyl aminopropyl)-1-(4'- fluorophenyl)-1,3-dihydroiso benzofuran-5-carbonitrile and non-toxic acid addition salts thereof Lexapro Forest Pharmaceuticals 14-Sep-11 Anti- depressant/ Obesity/ Alcoholism USD 2334.4 mn JP1879509 Dibenzothiazepine compound, manufacture and pharmaceutical composition having antipsychotic and neuroleptic activity Seroquel AstraZeneca 26-Sep-11 Acute dystonia, Acute dyskinesia and Tardive dyskinesia USD 3117.6 mn EP0454436 2-methyl-thieno- benzodiazepine Zyprexa Eli Lilly 27-Sep-11 across Europe Psychotic disorders, resistive depression, bipolar I disorder USD 1855.4 mn NL970034 Trans-6-[2-(3- or 4- Carboxamido-substituted pyrrol-1-yl)-alkyl]-4- hydroxypyran-2-one inhibitors of cholesterol synthesis Lipitor Pfizer 06-Nov-11 Cholestrol Inhibition USD 5363.2 mn Note: The above list is indicative and incomplete. It is only meant to provide a sample of drug patents expiring in 2011. closer2patents can further provide interested parties with patent expiration details for multiple countries and multiple drugs as per their requirement. For further details email us at [email protected] or call us at +91 22 65281005 / +91 9920866540. Visit Us at www.closer2patents.com . Thank You ! Sample List of Drugs going Off-Patent in 2011