Diazepam Patent Expiration

Diazepam was first introduced by Waylis Therapeutics Llc in its drug Valium on Approved Prior to Jan 1, 1982. Other drugs containing Diazepam are Dizac, Diazepam, Valtoco, Diastat, Diastat Acudial, Valrelease, Libervant. 43 different companies have introduced drugs containing Diazepam.


Diazepam Patents

Given below is the list of patents protecting Diazepam, 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
Libervant US11273131 Pharmaceutical compositions with enhanced permeation Jun 18, 2038 Aquestive
Valtoco US12324852 Administration of benzodiazepine compositions Oct 16, 2032 Neurelis Inc
Valtoco US12337061 Administration of benzodiazepine compositions Jun 13, 2032 Neurelis Inc
Valtoco US11241414 Administration of benzodiazepine compositions Mar 27, 2029 Neurelis Inc
Valtoco US11793786 Administration of benzodiazepine compositions Mar 27, 2029 Neurelis Inc
Valtoco US12268664 Administration of benzodiazepine compositions Mar 27, 2029 Neurelis Inc
Valtoco US8895546 Administration of benzodiazepine compositions Mar 27, 2029 Neurelis Inc
Valtoco US9763876 Administration of benzodiazepine compositions Mar 27, 2029 Neurelis Inc
Valtoco US8927497 Absorption enhancers for intranasal administration Jul 21, 2025

(Expired)

Neurelis Inc
Valtoco US10265402 Absorption enhancers for drug administration May 11, 2025

(Expired)

Neurelis Inc
Valtoco US9642913 Pharmaceutical composition including alkyl glycoside and an anti-seizure agent May 11, 2025

(Expired)

Neurelis Inc
Diastat US5462740 Rectally-administered, epileptic-seizure-inhibiting composition Sep 17, 2013

(Expired)

Bausch
Diastat Acudial US5462740 Rectally-administered, epileptic-seizure-inhibiting composition Sep 17, 2013

(Expired)

Bausch



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 Diazepam's patents.

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

Activity Date Patent Number
Patent litigations
Recordation of Patent eGrant 24 Oct, 2023 US11793786
Patent eGrant Notification 24 Oct, 2023 US11793786
Patent Issue Date Used in PTA Calculation 24 Oct, 2023 US11793786
Recordation of Patent Grant Mailed 24 Oct, 2023 US11793786
Mail Patent eGrant Notification 24 Oct, 2023 US11793786
Email Notification 24 Oct, 2023 US11793786
Email Notification 05 Oct, 2023 US11793786
Issue Notification Mailed 04 Oct, 2023 US11793786
Dispatch to FDC 19 Sep, 2023 US11793786
Application Is Considered Ready for Issue 19 Sep, 2023 US11793786


Diazepam's Family Patents

Family Patents

Explore Our Curated Drug Screens

Drugs Generating Over $1 Billion in Annual Revenue
Explore the top-performing drugs that dominate the pharmaceutical industry
View List
NCE-1 Patent Expiry in the Next 1 Year
Identify opportunities as new chemical entity (NCE-1) patents approach expiry
View List
Recently Granted Patents in EP
Find the opportunity to file Oppositions
View List

Diazepam Generic API Manufacturers

Several generic applications have been filed for Diazepam. The first generic version for Diazepam was by Mylan Pharmaceuticals Inc and was approved on Sep 4, 1985. And the latest generic version is by Galenicum Health Slu and was approved on May 19, 2025.

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