Drug Patent List
Litigation OpportunitiesNew
Newsletter
Weekly Digest

Pharsight

Naproxen Patent Expiration

Naproxen was first introduced by Atnahs Pharma Us Ltd in its drug Naprosyn on Approved Prior to Jan 1, 1982. Another drug containing Naproxen is Ec-Naprosyn. 32 different companies have introduced drugs containing Naproxen.


About Veterinary Naproxen

Naproxen is used in a drug marketed by 1 company: Zoetis Inc.

Other drugs containing Naproxen are: Equiproxen granules , Equiproxen 10% solution .

Naproxen'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

Naproxen Generic API Manufacturers

Several generic applications have been filed for Naproxen. The first generic version for Naproxen was by Hamilton Pharmaceuticals Ltd and was approved on Oct 30, 1992. And the latest generic version is by Aurobindo Pharma Ltd and was approved on Oct 3, 2025.

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