Memantine Hydrochloride Patent Expiration

Memantine Hydrochloride is Used for managing moderate to severe dementia of the Alzheimer's type. It was first introduced by Abbvie Inc in its drug Namenda on Oct 16, 2003. Another drug containing Memantine Hydrochloride is Namenda Xr. 37 different companies have introduced drugs containing Memantine Hydrochloride.


Memantine Hydrochloride Patents

Given below is the list of patents protecting Memantine 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
Namenda Xr US8039009

(Pediatric)

Modified release formulations of memantine oral dosage forms Sep 24, 2029 Abbvie
Namenda Xr US8039009 Modified release formulations of memantine oral dosage forms Mar 24, 2029 Abbvie
Namenda Xr US8168209

(Pediatric)

Method and composition for administering an NMDA receptor antagonist to a subject May 22, 2026 Abbvie
Namenda Xr US8173708

(Pediatric)

Method and composition for administering an NMDA receptor antagonist to a subject May 22, 2026 Abbvie
Namenda Xr US8283379

(Pediatric)

Methods and compositions for the treatment of CNS-related conditions May 22, 2026 Abbvie
Namenda Xr US8329752

(Pediatric)

Composition for administering an NMDA receptor antagonist to a subject May 22, 2026 Abbvie
Namenda Xr US8362085

(Pediatric)

Method for administering an NMDA receptor antagonist to a subject May 22, 2026 Abbvie
Namenda Xr US8598233

(Pediatric)

Method for administering an NMDA receptor antagonist to a subject May 22, 2026 Abbvie
Namenda Xr US8168209 Method and composition for administering an NMDA receptor antagonist to a subject Nov 22, 2025 Abbvie
Namenda Xr US8173708 Method and composition for administering an NMDA receptor antagonist to a subject Nov 22, 2025 Abbvie
Namenda Xr US8283379 Methods and compositions for the treatment of CNS-related conditions Nov 22, 2025 Abbvie
Namenda Xr US8329752 Composition for administering an NMDA receptor antagonist to a subject Nov 22, 2025 Abbvie
Namenda Xr US8362085 Method for administering an NMDA receptor antagonist to a subject Nov 22, 2025 Abbvie
Namenda Xr US8598233 Method for administering an NMDA receptor antagonist to a subject Nov 22, 2025 Abbvie
Namenda US5061703

(Pediatric)

Adamantane derivatives in the prevention and treatment of cerebral ischemia Oct 11, 2015

(Expired)

Abbvie
Namenda US5061703

(Pediatric)

Adamantane derivatives in the prevention and treatment of cerebral ischemia Oct 11, 2015

(Expired)

Allergan
Namenda Xr US5061703

(Pediatric)

Adamantane derivatives in the prevention and treatment of cerebral ischemia Oct 11, 2015

(Expired)

Abbvie
Namenda US5061703 Adamantane derivatives in the prevention and treatment of cerebral ischemia Apr 11, 2015

(Expired)

Abbvie
Namenda US5061703 Adamantane derivatives in the prevention and treatment of cerebral ischemia Apr 11, 2015

(Expired)

Allergan
Namenda Xr US5061703 Adamantane derivatives in the prevention and treatment of cerebral ischemia Apr 11, 2015

(Expired)

Abbvie



Memantine Hydrochloride's Family Patents

Family Patents

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Memantine Hydrochloride Generics

Several generic applications have been filed for Memantine Hydrochloride. The first generic version for Memantine Hydrochloride was by Dr Reddys Laboratories Ltd and was approved on Apr 14, 2010. And the latest generic version is by Xiamen Lp Pharmacuetical Co Ltd and was approved on Feb 6, 2024.

Given below is the list of companies who have filed for Memantine Hydrochloride generic.


1. ACME LABS

The Acme Laboratories Ltd has filed for 2 different strengths of generic version for Memantine Hydrochloride. Given below are the details of the strengths of this generic introduced by Acme Labs.

Strength Dosage Form Availability Application Pathway TE code Launch Date
5MG tablet Prescription ORAL AB May 7, 2018
10MG tablet Prescription ORAL AB May 7, 2018


2. AJANTA PHARMA LTD

Ajanta Pharma Ltd has filed for 2 different strengths of generic version for Memantine Hydrochloride. Given below are the details of the strengths of this generic introduced by Ajanta Pharma Ltd.

Strength Dosage Form Availability Application Pathway TE code Launch Date
10MG tablet Prescription ORAL AB Nov 30, 2015
5MG tablet Prescription ORAL AB Nov 30, 2015


3. ALEMBIC

Alembic Pharmaceuticals Ltd has filed for 2 different strengths of generic version for Memantine Hydrochloride. Given below are the details of the strengths of this generic introduced by Alembic.

Strength Dosage Form Availability Application Pathway TE code Launch Date
5MG tablet Prescription ORAL AB Oct 13, 2015
10MG tablet Prescription ORAL AB Oct 13, 2015


4. ALLIED

Allied Pharma Inc has filed for 2 different strengths of generic version for Memantine Hydrochloride. Given below are the details of the strengths of this generic introduced by Allied.

Strength Dosage Form Availability Application Pathway TE code Launch Date
5MG tablet Prescription ORAL AB Sep 4, 2015
10MG tablet Prescription ORAL AB Sep 4, 2015


5. AMNEAL PHARMS

Amneal Pharmaceuticals Of New York Llc has filed for 6 different strengths of generic version for Memantine Hydrochloride. Given below are the details of the strengths of this generic introduced by Amneal Pharms.

Strength Dosage Form Availability Application Pathway TE code Launch Date
10MG tablet Prescription ORAL AB Apr 10, 2015
5MG tablet Prescription ORAL AB Apr 10, 2015
21MG capsule, extended release Prescription ORAL AB Oct 12, 2016
28MG capsule, extended release Prescription ORAL AB Oct 12, 2016
7MG capsule, extended release Prescription ORAL AB Oct 12, 2016
14MG capsule, extended release Prescription ORAL AB Oct 12, 2016


6. ANI PHARMS

Ani Pharmaceuticals Inc has filed for 4 different strengths of generic version for Memantine Hydrochloride. Given below are the details of the strengths of this generic introduced by Ani Pharms.

Strength Dosage Form Availability Application Pathway TE code Launch Date
7MG capsule, extended release Discontinued ORAL N/A Feb 28, 2020
28MG capsule, extended release Discontinued ORAL N/A Feb 28, 2020
21MG capsule, extended release Discontinued ORAL N/A Feb 28, 2020
14MG capsule, extended release Discontinued ORAL N/A Feb 28, 2020


7. APOTEX

Apotex Inc has filed for 5 different strengths of generic version for Memantine Hydrochloride. Given below are the details of the strengths of this generic introduced by Apotex.

Strength Dosage Form Availability Application Pathway TE code Launch Date
28MG capsule, extended release Prescription ORAL AB Nov 22, 2016
7MG capsule, extended release Prescription ORAL AB Nov 22, 2016
14MG capsule, extended release Prescription ORAL AB Nov 22, 2016
21MG capsule, extended release Prescription ORAL AB Nov 22, 2016
2MG/ML solution Prescription ORAL AA Feb 9, 2018


8. APOZEAL PHARMS

Apozeal Pharmaceuticals Inc has filed for 1 generic for Memantine Hydrochloride. Given below are the details of the strengths of this generic introduced by Apozeal Pharms.

Strength Dosage Form Availability Application Pathway TE code Launch Date
2MG/ML solution Discontinued ORAL N/A Dec 7, 2015


9. AUROBINDO PHARMA LTD

Aurobindo Pharma Ltd has filed for 6 different strengths of generic version for Memantine Hydrochloride. Given below are the details of the strengths of this generic introduced by Aurobindo Pharma Ltd.

Strength Dosage Form Availability Application Pathway TE code Launch Date
10MG tablet Prescription ORAL AB Oct 13, 2015
5MG tablet Prescription ORAL AB Oct 13, 2015
28MG capsule, extended release Prescription ORAL AB Aug 9, 2021
14MG capsule, extended release Prescription ORAL AB Aug 9, 2021
7MG capsule, extended release Prescription ORAL AB Aug 9, 2021
21MG capsule, extended release Prescription ORAL AB Aug 9, 2021


10. CHARTWELL

Chartwell Life Molecules Llc has filed for 2 different strengths of generic version for Memantine Hydrochloride. Given below are the details of the strengths of this generic introduced by Chartwell.

Strength Dosage Form Availability Application Pathway TE code Launch Date
10MG tablet Discontinued ORAL N/A Jul 11, 2018
5MG tablet Discontinued ORAL N/A Jul 11, 2018


11. CHARTWELL MOLECULAR

Chartwell Molecular Holdings Llc has filed for 1 generic for Memantine Hydrochloride. Given below are the details of the strengths of this generic introduced by Chartwell Molecular.

Strength Dosage Form Availability Application Pathway TE code Launch Date
2MG/ML

(reference standard)

solution Prescription ORAL AA Oct 13, 2015


12. DR REDDYS LABS LTD

Dr Reddys Laboratories Ltd has filed for 2 different strengths of generic version for Memantine Hydrochloride. Given below are the details of the strengths of this generic introduced by Dr Reddys Labs Ltd.

Strength Dosage Form Availability Application Pathway TE code Launch Date
10MG tablet Prescription ORAL AB Apr 14, 2010
5MG tablet Prescription ORAL AB Apr 14, 2010


13. ENDO OPERATIONS

Endo Operations Ltd has filed for 4 different strengths of generic version for Memantine Hydrochloride. Given below are the details of the strengths of this generic introduced by Endo Operations.

Strength Dosage Form Availability Application Pathway TE code Launch Date
14MG capsule, extended release Discontinued ORAL N/A Jun 9, 2017
28MG capsule, extended release Discontinued ORAL N/A Jun 9, 2017
7MG capsule, extended release Discontinued ORAL N/A Jun 9, 2017
21MG capsule, extended release Discontinued ORAL N/A Jun 9, 2017


14. HETERO LABS LTD V

Hetero Labs Ltd Unit V has filed for 2 different strengths of generic version for Memantine Hydrochloride. Given below are the details of the strengths of this generic introduced by Hetero Labs Ltd V.

Strength Dosage Form Availability Application Pathway TE code Launch Date
10MG tablet Prescription ORAL AB Sep 26, 2022
5MG tablet Prescription ORAL AB Sep 26, 2022


15. HIKMA

Hikma Pharmaceuticals Llc has filed for 2 different strengths of generic version for Memantine Hydrochloride. Given below are the details of the strengths of this generic introduced by Hikma.

Strength Dosage Form Availability Application Pathway TE code Launch Date
5MG tablet Discontinued ORAL N/A Feb 28, 2020
10MG tablet Discontinued ORAL N/A Feb 28, 2020


16. JUBILANT GENERICS

Jubilant Generics Ltd has filed for 2 different strengths of generic version for Memantine Hydrochloride. Given below are the details of the strengths of this generic introduced by Jubilant Generics.

Strength Dosage Form Availability Application Pathway TE code Launch Date
5MG tablet Discontinued ORAL N/A Oct 13, 2015
10MG tablet Discontinued ORAL N/A Oct 13, 2015


17. LANNETT CO INC

Lannett Co Inc has filed for 2 different strengths of generic version for Memantine Hydrochloride. Given below are the details of the strengths of this generic introduced by Lannett Co Inc.

Strength Dosage Form Availability Application Pathway TE code Launch Date
5MG tablet Discontinued ORAL N/A Nov 10, 2016
10MG tablet Discontinued ORAL N/A Nov 10, 2016


18. LUPIN LTD

Lupin Ltd has filed for 6 different strengths of generic version for Memantine Hydrochloride. Given below are the details of the strengths of this generic introduced by Lupin Ltd.

Strength Dosage Form Availability Application Pathway TE code Launch Date
5MG tablet Prescription ORAL AB Apr 10, 2015
10MG tablet Prescription ORAL AB Apr 10, 2015
7MG capsule, extended release Prescription ORAL AB Sep 28, 2016
14MG capsule, extended release Prescription ORAL AB Sep 28, 2016
21MG capsule, extended release Prescription ORAL AB Sep 28, 2016
28MG capsule, extended release Prescription ORAL AB Sep 28, 2016


19. MACLEODS PHARMS LTD

Macleods Pharmaceuticals Ltd has filed for 3 different strengths of generic version for Memantine Hydrochloride. Given below are the details of the strengths of this generic introduced by Macleods Pharms Ltd.

Strength Dosage Form Availability Application Pathway TE code Launch Date
2MG/ML solution Prescription ORAL AA Oct 13, 2015
5MG tablet Prescription ORAL AB Oct 13, 2015
10MG tablet Prescription ORAL AB Oct 13, 2015


20. ORBION PHARMS

Orbion Pharmaceuticals Private Ltd has filed for 2 different strengths of generic version for Memantine Hydrochloride. Given below are the details of the strengths of this generic introduced by Orbion Pharms.

Strength Dosage Form Availability Application Pathway TE code Launch Date
5MG tablet Discontinued ORAL N/A Mar 12, 2012
10MG tablet Discontinued ORAL N/A Mar 12, 2012


21. POLYGEN PHARMS

Polygen Pharmaceuticals Inc has filed for 2 different strengths of generic version for Memantine Hydrochloride. Given below are the details of the strengths of this generic introduced by Polygen Pharms.

Strength Dosage Form Availability Application Pathway TE code Launch Date
10MG tablet Prescription ORAL AB Dec 11, 2020
5MG tablet Prescription ORAL AB Dec 11, 2020


22. PURACAP PHARM LLC

Puracap Pharmaceutical Llc has filed for 2 different strengths of generic version for Memantine Hydrochloride. Given below are the details of the strengths of this generic introduced by Puracap Pharm Llc.

Strength Dosage Form Availability Application Pathway TE code Launch Date
5MG tablet Prescription ORAL AB Nov 17, 2015
10MG tablet Prescription ORAL AB Nov 17, 2015


23. RISING

Rising Pharma Holding Inc has filed for 6 different strengths of generic version for Memantine Hydrochloride. Given below are the details of the strengths of this generic introduced by Rising.

Strength Dosage Form Availability Application Pathway TE code Launch Date
10MG tablet Discontinued ORAL N/A Jan 30, 2015
5MG tablet Discontinued ORAL N/A Jan 30, 2015
7MG capsule, extended release Discontinued ORAL N/A Sep 28, 2016
14MG capsule, extended release Discontinued ORAL N/A Sep 28, 2016
21MG capsule, extended release Discontinued ORAL N/A Sep 28, 2016
28MG capsule, extended release Discontinued ORAL N/A Sep 28, 2016


24. SETON PHARMS

Seton Pharmaceuticals Llc has filed for 1 generic for Memantine Hydrochloride. Given below are the details of the strengths of this generic introduced by Seton Pharms.

Strength Dosage Form Availability Application Pathway TE code Launch Date
2MG/ML solution Prescription ORAL AA Aug 31, 2020


25. STRIDES PHARMA

Strides Pharma Global Pte Ltd has filed for 2 different strengths of generic version for Memantine Hydrochloride. Given below are the details of the strengths of this generic introduced by Strides Pharma.

Strength Dosage Form Availability Application Pathway TE code Launch Date
10MG tablet Prescription ORAL AB May 23, 2017
5MG tablet Prescription ORAL AB May 23, 2017


26. SUN PHARM

Sun Pharmaceutical Industries Ltd has filed for 6 different strengths of generic version for Memantine Hydrochloride. Given below are the details of the strengths of this generic introduced by Sun Pharm.

Strength Dosage Form Availability Application Pathway TE code Launch Date
5MG tablet Prescription ORAL AB May 5, 2010
10MG tablet Prescription ORAL AB May 5, 2010
28MG capsule, extended release Discontinued ORAL N/A Sep 28, 2016
7MG capsule, extended release Discontinued ORAL N/A Sep 28, 2016
14MG capsule, extended release Discontinued ORAL N/A Sep 28, 2016
21MG capsule, extended release Discontinued ORAL N/A Sep 28, 2016


27. TEVA PHARMS

Teva Pharmaceuticals Usa has filed for 2 different strengths of generic version for Memantine Hydrochloride. Given below are the details of the strengths of this generic introduced by Teva Pharms.

Strength Dosage Form Availability Application Pathway TE code Launch Date
10MG tablet Discontinued ORAL N/A Oct 25, 2011
5MG tablet Discontinued ORAL N/A Oct 25, 2011


28. TORRENT

Torrent Pharmaceuticals Ltd has filed for 2 different strengths of generic version for Memantine Hydrochloride. Given below are the details of the strengths of this generic introduced by Torrent.

Strength Dosage Form Availability Application Pathway TE code Launch Date
5MG tablet Discontinued ORAL N/A Oct 13, 2015
10MG tablet Discontinued ORAL N/A Oct 13, 2015


29. UNICHEM

Unichem Laboratories Ltd has filed for 2 different strengths of generic version for Memantine Hydrochloride. Given below are the details of the strengths of this generic introduced by Unichem.

Strength Dosage Form Availability Application Pathway TE code Launch Date
5MG tablet Prescription ORAL AB Oct 13, 2015
10MG tablet Prescription ORAL AB Oct 13, 2015


30. UPSHER SMITH LABS

Upsher Smith Laboratories Llc has filed for 2 different strengths of generic version for Memantine Hydrochloride. Given below are the details of the strengths of this generic introduced by Upsher Smith Labs.

Strength Dosage Form Availability Application Pathway TE code Launch Date
10MG tablet Prescription ORAL AB Jul 31, 2015
5MG tablet Prescription ORAL AB Jul 31, 2015


31. XIAMEN LP PHARM CO

Xiamen Lp Pharmacuetical Co Ltd has filed for 4 different strengths of generic version for Memantine Hydrochloride. Given below are the details of the strengths of this generic introduced by Xiamen Lp Pharm Co.

Strength Dosage Form Availability Application Pathway TE code Launch Date
7MG capsule, extended release Prescription ORAL AB Oct 11, 2022
14MG capsule, extended release Prescription ORAL AB Oct 11, 2022
28MG capsule, extended release Prescription ORAL AB Oct 11, 2022
21MG capsule, extended release Prescription ORAL AB Feb 6, 2024


32. YICHANG HUMANWELL

Yichang Humanwell Pharmaceutical Co Ltd has filed for 4 different strengths of generic version for Memantine Hydrochloride. Given below are the details of the strengths of this generic introduced by Yichang Humanwell.

Strength Dosage Form Availability Application Pathway TE code Launch Date
14MG capsule, extended release Prescription ORAL AB Apr 2, 2021
21MG capsule, extended release Prescription ORAL AB Apr 2, 2021
7MG capsule, extended release Prescription ORAL AB Apr 2, 2021
28MG capsule, extended release Prescription ORAL AB Apr 2, 2021


33. YILING

Yiling Pharmaceutical Ltd has filed for 2 different strengths of generic version for Memantine Hydrochloride. Given below are the details of the strengths of this generic introduced by Yiling.

Strength Dosage Form Availability Application Pathway TE code Launch Date
10MG tablet Discontinued ORAL N/A Apr 3, 2020
5MG tablet Discontinued ORAL N/A Apr 3, 2020


34. ZYDUS LIFESCIENCES

Zydus Lifesciences Ltd has filed for 2 different strengths of generic version for Memantine Hydrochloride. Given below are the details of the strengths of this generic introduced by Zydus Lifesciences.

Strength Dosage Form Availability Application Pathway TE code Launch Date
10MG tablet Prescription ORAL AB Jul 10, 2017
5MG tablet Prescription ORAL AB Jul 10, 2017


35. ZYDUS PHARMS

Zydus Pharmaceuticals Usa Inc has filed for 4 different strengths of generic version for Memantine Hydrochloride. Given below are the details of the strengths of this generic introduced by Zydus Pharms.

Strength Dosage Form Availability Application Pathway TE code Launch Date
7MG capsule, extended release Prescription ORAL AB Aug 3, 2017
21MG capsule, extended release Prescription ORAL AB Aug 3, 2017
14MG capsule, extended release Prescription ORAL AB Aug 3, 2017
28MG

(reference standard)

capsule, extended release Prescription ORAL AB Aug 3, 2017