Silodosin Patent Expiration

Silodosin is Used for managing the signs and symptoms of benign prostatic hyperplasia (BPH). It was first introduced by Abbvie Inc in its drug Rapaflo on Oct 8, 2008. 14 different companies have introduced drugs containing Silodosin.


Silodosin Patents

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

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Drug Used in Drug Patent Number Drug Patent Title Drug Patent Expiry Drug Owner
Rapaflo US5387603 1,5,7-trisubstituted indoline compounds and salts thereof Dec 01, 2018

(Expired)

Abbvie
Rapaflo US5403847 Use of α1C specific compounds to treat benign prostatic hyperlasia Nov 13, 2012

(Expired)

Abbvie
Rapaflo US5780485 Use of α1c specific compounds to treat benign prostatic hyperplasia Nov 13, 2012

(Expired)

Abbvie
Rapaflo US6015819 Use of alpha-1C specific compounds to treat benign prostatic hyperplasia Nov 13, 2012

(Expired)

Abbvie



Silodosin's Family Patents

Family Patents

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Clinical Trials

Recent Clinical Trials on Silodosin:

Sometimes companies keep conducting clinical trials even after the drug's approval to discover new formulations, methods of use, or new treatment indications, so they could file for additional patents or receive regulatory exclusivity extensions, such as pediatric exclusivity, potentially delaying generic competition. Based on these recent clinical trials, generic companies need to consider the potential for new intellectual property or regulatory hurdles. These strategic moves by the drug owner might delay generic substitution or lead to additional sales of the brand drug, even after patent expiry.

Title Lead Sponsor Collaborators Status Phases
Clinical Trials
A Multicenter Randomized Cross-Over Study Evaluating the Efficacy and Safety of Silodosin in Adult Women With Voiding Dysfunction Jaber Al Ahmad Al Sabah Hospital NA NOT YET RECRUITING
(Sep 1, 2026)
PHASE2


Silodosin Generic API Manufacturers

Several generic applications have been filed for Silodosin. The first generic version for Silodosin was by Chartwell Rx Sciences Llc and was approved on Mar 31, 2017. And the latest generic version is by Torrent Pharmaceuticals Ltd and was approved on Feb 10, 2025.

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