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
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 | 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 |
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 | Adamantane derivatives in the prevention and treatment of cerebral ischemia |
Apr 11, 2015
(Expired) | Abbvie |
| Namenda Xr |
US5061703 (Pediatric) | Adamantane derivatives in the prevention and treatment of cerebral ischemia |
Oct 11, 2015
(Expired) | Abbvie |
| Namenda Xr | US8039009 | Modified release formulations of memantine oral dosage forms | Mar 24, 2029 | Abbvie |
| Namenda Xr |
US8039009 (Pediatric) | Modified release formulations of memantine oral dosage forms | Sep 24, 2029 | Abbvie |
| Namenda Xr | US8168209 | Method and composition for administering an NMDA receptor antagonist to a subject | Nov 22, 2025 | Abbvie |
| Namenda Xr |
US8168209 (Pediatric) | Method and composition for administering an NMDA receptor antagonist to a subject | May 22, 2026 | Abbvie |
| Namenda Xr | US8173708 | Method and composition for administering an NMDA receptor antagonist to a subject | Nov 22, 2025 | Abbvie |
| Namenda Xr |
US8173708 (Pediatric) | Method and composition for administering an NMDA receptor antagonist to a subject | May 22, 2026 | Abbvie |
| Namenda Xr | US8283379 | Methods and compositions for the treatment of CNS-related conditions | Nov 22, 2025 | Abbvie |
| Namenda Xr |
US8283379 (Pediatric) | Methods and compositions for the treatment of CNS-related conditions | May 22, 2026 | Abbvie |
| Namenda Xr | US8329752 | Composition for administering an NMDA receptor antagonist to a subject | Nov 22, 2025 | Abbvie |
| Namenda Xr |
US8329752 (Pediatric) | Composition for administering an NMDA receptor antagonist to a subject | May 22, 2026 | Abbvie |
| Namenda Xr | US8362085 | Method for administering an NMDA receptor antagonist to a subject | Nov 22, 2025 | Abbvie |
| Namenda Xr |
US8362085 (Pediatric) | Method for administering an NMDA receptor antagonist to a subject | May 22, 2026 | Abbvie |
| Namenda Xr | US8598233 | Method for administering an NMDA receptor antagonist to a subject | Nov 22, 2025 | Abbvie |
| Namenda Xr |
US8598233 (Pediatric) | Method for administering an NMDA receptor antagonist to a subject | May 22, 2026 | Abbvie |
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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. 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 |
2. 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 |
3. 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 |
4. 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 |
5. 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 |
6. 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 |
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. RENATA
Renata 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 Renata.
| 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 |
9. 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 |
10. 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 |
11. 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 |
12. 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 |
13. 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 |
14. 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 |
15. 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 | capsule, extended release | Prescription | ORAL | AB | Aug 3, 2017 |
16. 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 |
17. 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 |
18. 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 |
19. 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 |
20. 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 |
21. CELLTRION
Celltrion 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 Celltrion.
| 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 |
22. 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 |
23. 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 |
24. 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 |
25. 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 |
26. 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 |
27. 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 |
28. 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 |
29. 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 |
30. 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 |
31. 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 |
32. 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 |
33. 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 |
34. 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 |
35. 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 |