Omeprazole Patent Expiration

Omeprazole was first introduced by Astrazeneca Pharmaceuticals Lp in its drug Prilosec on Sep 14, 1989. Another drug containing Omeprazole is Omeprazole. 21 different companies have introduced drugs containing Omeprazole.


Omeprazole Patents

Given below is the list of patents protecting Omeprazole, along with the drug name that holds that patent and the company name owning that drug.

Drug Used in Drug Patent Number Drug Patent Title Drug Patent Expiry Drug Owner
Omeprazole US10076494 Stable orally disintegrating pharmaceutical compositions Dec 08, 2036 Dexcel
Omeprazole US10835488 Stable orally disintegrating pharmaceutical compositions Dec 08, 2036 Dexcel
Omeprazole US9023391 Stable benzimidazole formulation Aug 16, 2025 Dexcel Pharma
Prilosec US6150380

(Pediatric)

Crystalline form of omeprazole May 10, 2019

(Expired)

Astrazeneca
Prilosec US6147103

(Pediatric)

Omeprazole process and compositions thereof Apr 09, 2019

(Expired)

Astrazeneca
Prilosec US6166213

(Pediatric)

Omeprazole process and compositions thereof Apr 09, 2019

(Expired)

Astrazeneca
Prilosec US6191148

(Pediatric)

Omerazole process and compositions thereof Apr 09, 2019

(Expired)

Astrazeneca
Prilosec US6150380 Crystalline form of omeprazole Nov 10, 2018

(Expired)

Astrazeneca
Prilosec US6147103 Omeprazole process and compositions thereof Oct 09, 2018

(Expired)

Astrazeneca
Prilosec US6166213 Omeprazole process and compositions thereof Oct 09, 2018

(Expired)

Astrazeneca
Prilosec US6191148 Omerazole process and compositions thereof Oct 09, 2018

(Expired)

Astrazeneca



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 Omeprazole's patents.

Given below is the list recent legal activities going on the following patents of Omeprazole.

Activity Date Patent Number
Patent litigations
Payment of Maintenance Fee, 4th Year, Large Entity 09 May, 2024 US10835488
Payment of Maintenance Fee, 8th Year, Large Entity 26 Oct, 2022 US9023391(Litigated)
Payment of Maintenance Fee, 4th Year, Large Entity 14 Feb, 2022 US10076494
Recordation of Patent Grant Mailed 17 Nov, 2020 US10835488
Patent Issue Date Used in PTA Calculation 17 Nov, 2020 US10835488
Email Notification 29 Oct, 2020 US10835488
Issue Notification Mailed 28 Oct, 2020 US10835488
Email Notification 13 Oct, 2020 US10835488
Mailing Corrected Notice of Allowability 13 Oct, 2020 US10835488
Dispatch to FDC 10 Oct, 2020 US10835488


Omeprazole's Family Patents

Family Patents

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Omeprazole Generic API Manufacturers

Several generic applications have been filed for Omeprazole. The first generic version for Omeprazole was by Lannett Co Inc and was approved on Nov 1, 2002. And the latest generic version is by Xiromed Pharma Espana Sl and was approved on Dec 27, 2024.

Given below is the list of companies who have filed for Omeprazole generic, along with the locations of their manufacturing plants worldwide.