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Fomepizole Patent Expiration

Fomepizole was first introduced by Par Pharmaceutical Inc in its drug Antizol on Dec 4, 1997. 5 different companies have introduced drugs containing Fomepizole.


Fomepizole Patents

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

Filter patents by

Country : United States (US)
Patent Category : All
Drug Used in Drug Patent Number Drug Patent Title Drug Patent Expiry Drug Owner
Antizol US7553863 Ultrapure 4-methylpyrazole Jun 30, 2027 Par Pharm Inc



Fomepizole's Family Patents

Family Patents

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Fomepizole Generic API Manufacturers

Several generic applications have been filed for Fomepizole. The first generic version for Fomepizole was by American Regent Inc and was approved on Dec 14, 2007. And the latest generic version is by Gland Pharma Ltd and was approved on Jul 6, 2023.

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