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Last Updated: March 19, 2024

NAMENDA Drug Patent Profile


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When do Namenda patents expire, and what generic alternatives are available?

Namenda is a drug marketed by Allergan and Abbvie and is included in three NDAs. There is one patent protecting this drug and one Paragraph IV challenge.

The generic ingredient in NAMENDA is memantine hydrochloride. There are twenty-eight drug master file entries for this compound. Forty suppliers are listed for this compound. Additional details are available on the memantine hydrochloride profile page.

DrugPatentWatch® Litigation and Generic Entry Outlook for Namenda

A generic version of NAMENDA was approved as memantine hydrochloride by DR REDDYS LABS LTD on April 14th, 2010.

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Drug patent expirations by year for NAMENDA
Drug Prices for NAMENDA

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Drug Sales Revenue Trends for NAMENDA

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Recent Clinical Trials for NAMENDA

Identify potential brand extensions & 505(b)(2) entrants

SponsorPhase
University of ChicagoPhase 2/Phase 3
Children's Hospital Medical Center, CincinnatiEarly Phase 1
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)Early Phase 1

See all NAMENDA clinical trials

Pharmacology for NAMENDA
Anatomical Therapeutic Chemical (ATC) Classes for NAMENDA
Paragraph IV (Patent) Challenges for NAMENDA
Tradename Dosage Ingredient Strength NDA ANDAs Submitted Submissiondate
NAMENDA Tablets memantine hydrochloride 5 mg and 10 mg 021487 14 2007-10-16

US Patents and Regulatory Information for NAMENDA

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Allergan NAMENDA memantine hydrochloride SOLUTION;ORAL 021627-001 Apr 18, 2005 DISCN Yes No ⤷  Try a Trial ⤷  Try a Trial ⤷  Try a Trial
Abbvie NAMENDA XR memantine hydrochloride CAPSULE, EXTENDED RELEASE;ORAL 022525-004 Jun 21, 2010 AB RX Yes Yes ⤷  Try a Trial ⤷  Try a Trial Y ⤷  Try a Trial
Abbvie NAMENDA XR memantine hydrochloride CAPSULE, EXTENDED RELEASE;ORAL 022525-001 Jun 21, 2010 DISCN Yes No ⤷  Try a Trial ⤷  Try a Trial Y ⤷  Try a Trial
Abbvie NAMENDA memantine hydrochloride TABLET;ORAL 021487-001 Oct 16, 2003 AB RX Yes No ⤷  Try a Trial ⤷  Try a Trial ⤷  Try a Trial
Abbvie NAMENDA memantine hydrochloride TABLET;ORAL 021487-002 Oct 16, 2003 AB RX Yes Yes ⤷  Try a Trial ⤷  Try a Trial ⤷  Try a Trial
Abbvie NAMENDA XR memantine hydrochloride CAPSULE, EXTENDED RELEASE;ORAL 022525-003 Jun 21, 2010 AB RX Yes No ⤷  Try a Trial ⤷  Try a Trial Y ⤷  Try a Trial
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Exclusivity Expiration

Expired US Patents for NAMENDA

Applicant Tradename Generic Name Dosage NDA Approval Date Patent No. Patent Expiration
Allergan NAMENDA memantine hydrochloride SOLUTION;ORAL 021627-001 Apr 18, 2005 ⤷  Try a Trial ⤷  Try a Trial
Abbvie NAMENDA memantine hydrochloride TABLET;ORAL 021487-002 Oct 16, 2003 ⤷  Try a Trial ⤷  Try a Trial
Abbvie NAMENDA memantine hydrochloride TABLET;ORAL 021487-002 Oct 16, 2003 ⤷  Try a Trial ⤷  Try a Trial
Abbvie NAMENDA memantine hydrochloride TABLET;ORAL 021487-001 Oct 16, 2003 ⤷  Try a Trial ⤷  Try a Trial
Allergan NAMENDA memantine hydrochloride SOLUTION;ORAL 021627-001 Apr 18, 2005 ⤷  Try a Trial ⤷  Try a Trial
Abbvie NAMENDA memantine hydrochloride TABLET;ORAL 021487-001 Oct 16, 2003 ⤷  Try a Trial ⤷  Try a Trial
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >Patent No. >Patent Expiration

EU/EMA Drug Approvals for NAMENDA

Company Drugname Inn Product Number / Indication Status Generic Biosimilar Orphan Marketing Authorisation Marketing Refusal
Merz Pharmaceuticals GmbH   Memantine Merz memantine hydrochloride EMEA/H/C/002711
Treatment of patients with moderate to severe Alzheimer’s disease.
Authorised no no no 2012-11-22
>Company >Drugname >Inn >Product Number / Indication >Status >Generic >Biosimilar >Orphan >Marketing Authorisation >Marketing Refusal

International Patents for NAMENDA

See the table below for patents covering NAMENDA around the world.

Country Patent Number Title Estimated Expiration
Denmark 0661973 ⤷  Try a Trial
Denmark 91690 ⤷  Try a Trial
Denmark 173356 ⤷  Try a Trial
Japan H02292214 ADAMANTANE DERIVATIVE IN PREVENTION AND THERAPY OF CEREBRAL ANEMIA ⤷  Try a Trial
Germany 58905637 ⤷  Try a Trial
Spain 2159528 ⤷  Try a Trial
>Country >Patent Number >Title >Estimated Expiration

Supplementary Protection Certificates for NAMENDA

Patent Number Supplementary Protection Certificate SPC Country SPC Expiration SPC Description
0392059 SPC/GB02/046 United Kingdom ⤷  Try a Trial PRODUCT NAME: MEMANTINE AND ITS PHARMACEUTICALLY ACCEPTABLE SALTS; REGISTERED: UK EU/1/02/219/001 20020515; UK EU/1/02/219/002 20020515; UK EU/1/02/219/003 20020515; UK EU/1/02/219/004 20020515; UK EU/1/02/219/005 20020515; UK EU/1/02/219/006 20020515
0392059 90988 Luxembourg ⤷  Try a Trial
0392059 0290025-6 Sweden ⤷  Try a Trial PRODUCT NAME: MEMANTIN, 1-AMINO-3,5-DIMETYLADAMANTAN; REGISTRATION NO/DATE: EU/1/02/219/001 20020515
0392059 2002C/035 Belgium ⤷  Try a Trial PRODUCT NAME: MEMANTINE; REGISTRATION NO/DATE: EU/1/02/219/001 20020517
>Patent Number >Supplementary Protection Certificate >SPC Country >SPC Expiration >SPC Description

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