Donepezil Hydrochloride; Memantine Hydrochloride Patent Expiration
Donepezil Hydrochloride; Memantine Hydrochloride is Used for managing moderate to severe dementia in Alzheimer's disease. It was first introduced by Abbvie Inc
Donepezil Hydrochloride; Memantine Hydrochloride Patents
Given below is the list of patents protecting Donepezil Hydrochloride; 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 |
|---|---|---|---|---|
| Namzaric | US5061703 | Adamantane derivatives in the prevention and treatment of cerebral ischemia |
Apr 11, 2015
(Expired) | Abbvie |
| Namzaric |
US5061703 (Pediatric) | Adamantane derivatives in the prevention and treatment of cerebral ischemia |
Oct 11, 2015
(Expired) | Abbvie |
| Namzaric | US8039009 | Modified release formulations of memantine oral dosage forms | Mar 24, 2029 | Abbvie |
| Namzaric |
US8039009 (Pediatric) | Modified release formulations of memantine oral dosage forms | Sep 24, 2029 | Abbvie |
| Namzaric | US8058291 | Methods and compositions for the treatment of CNS-related conditions | Dec 05, 2029 | Abbvie |
| Namzaric | US8168209 | Method and composition for administering an NMDA receptor antagonist to a subject | Nov 22, 2025 | Abbvie |
| Namzaric |
US8168209 (Pediatric) | Method and composition for administering an NMDA receptor antagonist to a subject | May 22, 2026 | Abbvie |
| Namzaric | US8173708 | Method and composition for administering an NMDA receptor antagonist to a subject | Nov 22, 2025 | Abbvie |
| Namzaric |
US8173708 (Pediatric) | Method and composition for administering an NMDA receptor antagonist to a subject | May 22, 2026 | Abbvie |
| Namzaric | US8283379 | Methods and compositions for the treatment of CNS-related conditions | Nov 22, 2025 | Abbvie |
| Namzaric |
US8283379 (Pediatric) | Methods and compositions for the treatment of CNS-related conditions | May 22, 2026 | Abbvie |
| Namzaric | US8293794 | Methods and compositions for the treatment of CNS-related conditions | Nov 22, 2025 | Abbvie |
| Namzaric | US8329752 | Composition for administering an NMDA receptor antagonist to a subject | Nov 22, 2025 | Abbvie |
| Namzaric |
US8329752 (Pediatric) | Composition for administering an NMDA receptor antagonist to a subject | May 22, 2026 | Abbvie |
| Namzaric | US8338485 | Compositions for the treatment of CNS-related conditions | Nov 22, 2025 | Abbvie |
| Namzaric | US8338486 | Methods for the treatment of CNS-related conditions | Nov 22, 2025 | Abbvie |
| Namzaric | US8362085 | Method for administering an NMDA receptor antagonist to a subject | Nov 22, 2025 | Abbvie |
| Namzaric |
US8362085 (Pediatric) | Method for administering an NMDA receptor antagonist to a subject | May 22, 2026 | Abbvie |
| Namzaric | US8580858 | Compositions for the treatment of CNS-related conditions | Nov 22, 2025 | Abbvie |
| Namzaric | US8598233 | Method for administering an NMDA receptor antagonist to a subject | Nov 22, 2025 | Abbvie |
| Namzaric |
US8598233 (Pediatric) | Method for administering an NMDA receptor antagonist to a subject | May 22, 2026 | Abbvie |
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Donepezil Hydrochloride; Memantine Hydrochloride Generics
Several generic applications have been filed for Donepezil Hydrochloride; Memantine Hydrochloride. The first generic version for Donepezil Hydrochloride; Memantine Hydrochloride was by Amneal Pharmaceuticals and was approved on Jan 27, 2017. And the latest generic version is by Ani Pharmaceuticals Inc and was approved on Dec 15, 2023.
Given below is the list of companies who have filed for Donepezil Hydrochloride; Memantine Hydrochloride generic.
1. AMNEAL PHARMS
Amneal Pharmaceuticals has filed for 2 different strengths of generic version for Donepezil Hydrochloride; Memantine Hydrochloride. All of these versions come by the name MEMANTINE HYDROCHLORIDE AND DONEPEZIL 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; 14MG | capsule, extended release | Discontinued | ORAL | N/A | Jan 27, 2017 |
| 10MG; 28MG | capsule, extended release | Discontinued | ORAL | N/A | Jan 27, 2017 |
2. ANI PHARMS
Ani Pharmaceuticals Inc has filed for 1 generic for Donepezil Hydrochloride; Memantine Hydrochloride. This 10mg;21mg version comes by the name MEMANTINE HYDROCHLORIDE AND DONEPEZIL 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 |
|---|---|---|---|---|---|
| 10MG; 21MG | capsule, extended release | Prescription | ORAL | AB | Dec 15, 2023 |