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Author: Admin | 2025-04-28
Cialis is a drug owned by Eli Lilly And Co. It is protected by 9 US drug patents filed from 2013 to 2018 out of which all have expired. Based on its patents and exclusivities, its generic launch date is estimated to be Aug 15, 2021. Details of Cialis's patents and their expiration are given in the table below. Drug Patent Number Drug Patent Title Drug Patent Expiry Status These drug patents focus on the other aspects of the drug like dosage, mode of administration (oral, tablet, capsules, liquids etc). US6821975 (Pediatric) Beta-carboline drug products May, 2021 (3 years ago) Expired US6821975 Beta-carboline drug products Nov, 2020 (4 years ago) Expired US6943166 (Pediatric) Compositions comprising phosphodiesterase inhabitors for the treatment of sexual disfunction Oct, 2020 (4 years ago) Expired US7182958 (Pediatric) β-carboline pharmaceutical compositions Oct, 2020 (4 years ago) Expired US6943166 Compositions comprising phosphodiesterase inhabitors for the treatment of sexual disfunction Apr, 2020 (4 years ago) Expired US7182958 β-carboline pharmaceutical compositions Apr, 2020 (4 years ago) Expired US5859006 (Pediatric) Tetracyclic derivatives; process of preparation and use May, 2018 (6 years ago) Expired US5859006 Tetracyclic derivatives; process of preparation and use Nov, 2017 (7 years ago) Expired US6140329 Use of cGMP-phosphodiesterase inhibitors in methods and compositions to treat impotence Jul, 2016 (8 years ago) Expired A patent's expiry date may change depending upon legal activities going on that patent. Critical activities like abandoning of a patent, term extension of a patent or amendment of its claims can increase or decrease the life of a patent hence affecting its expiry date and in turn affecting the generic launch date of that drug. Tracking these ongoing activities on a patent application helps to keep an eye on the latest developments in the patent process of the drug which can give an idea of how early a drug's generic could be available. The next section provides a list of recent legal activities on Cialis's patents. Latest Legal Activities on Cialis's Patents Given below is the list of recent legal activities going on the following patents of Cialis. Activity Date Patent Number Review Certificate Mailed 27 Jun, 2019 US6821975 (Litigated)Review Certificate Mailed 26 Jun, 2019 US7182958 (Litigated)Review Certificate 12 Jun, 2019 US6821975 (Litigated)Review Certificate 12 Jun, 2019 US7182958 (Litigated)Request for Trial Denied Critical 07 Dec, 2018 US6943166 (Litigated)Payment of Maintenance Fee, 12th Year, Large Entity 16 Jul, 2018 US7182958 (Litigated)Petition Requesting Trial 07 Jun, 2018
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