Zileuton Patent Expiration

Zileuton was first introduced by Chiesi Usa Inc in its drug Zyflo on Dec 9, 1996. Another drug containing Zileuton is Zyflo Cr. 7 different companies have introduced drugs containing Zileuton.


Zileuton Patents

Given below is the list of patents protecting Zileuton, 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
Zyflo Cr US6183778 Pharmaceutical tablet capable of liberating one or more drugs at different release rates Sep 21, 2013

(Expired)

Chiesi



Zileuton's Family Patents

Family Patents

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Zileuton Generic API Manufacturers

Several generic applications have been filed for Zileuton. The first generic version for Zileuton was by Rising Pharma Holdings Inc and was approved on Mar 17, 2017. And the latest generic version is by Annora Pharma Private Ltd and was approved on Oct 11, 2022.

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