Guanfacine Hydrochloride Patent Expiration

Guanfacine Hydrochloride is Used for treating attention-deficit hyperactivity disorder. It was first introduced by Promius Pharma Llc in its drug Tenex on Oct 27, 1986. Another drug containing Guanfacine Hydrochloride is Intuniv. 23 different companies have introduced drugs containing Guanfacine Hydrochloride.


Guanfacine Hydrochloride Patents

Given below is the list of patents protecting Guanfacine Hydrochloride, 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
Intuniv US6811794

(Pediatric)

Sustained release pharmaceutical dosage forms with minimized pH dependent dissolution profiles Jan 04, 2023

(Expired)

Takeda Pharms Usa
Intuniv US6811794 Sustained release pharmaceutical dosage forms with minimized pH dependent dissolution profiles Jul 04, 2022

(Expired)

Takeda Pharms Usa
Intuniv US6287599

(Pediatric)

Sustained release pharmaceutical dosage forms with minimized pH dependent dissolution profiles Jun 20, 2021

(Expired)

Takeda Pharms Usa
Intuniv US6287599 Sustained release pharmaceutical dosage forms with minimized pH dependent dissolution profiles Dec 20, 2020

(Expired)

Takeda Pharms Usa
Intuniv US5854290

(Pediatric)

Use of guanfacine in the treatment of behavioral disorders Mar 21, 2016

(Expired)

Takeda Pharms Usa
Intuniv US5854290 Use of guanfacine in the treatment of behavioral disorders Sep 21, 2015

(Expired)

Takeda Pharms Usa



Guanfacine Hydrochloride's Family Patents

Family Patents

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Guanfacine Hydrochloride Generic API Manufacturers

Several generic applications have been filed for Guanfacine Hydrochloride. The first generic version for Guanfacine Hydrochloride was by Watson Laboratories Inc and was approved on Oct 17, 1995. And the latest generic version is by Rubicon Research Ltd and was approved on Apr 15, 2025.

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