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DONEPEZIL HYDROCHLORIDE; MEMANTINE HYDROCHLORIDE, NDA 206439

The patents and exclusivities FDA's Orange Book lists for NDA 206439 as captured on 14 October 2026, each date named by its rule and its rows, and the rows of FDA's Paragraph IV list that give this NDA's number, as captured on 17 October 2026. Listed protection is a range of dates, never one date.

FDA capture · review pending. Each row is shown as captured from FDA's Orange Book files and Paragraph IV list. Dates are FDA's own; spreadsheet day numbers are shown as dates, and a cell that cannot be read as one date is shown as written and left out of the range. Where FDA lists a *PED row without flags, its flags are read from the base row and marked so. A Paragraph IV row is placed here only by the number in its RLD/NDA cell; nothing is joined by name. How this page reads FDA's files has not been independently reviewed by a regulatory-affairs reviewer.

Orange Book captured
14 October 2026
Paragraph IV list captured
17 October 2026
Last checked
30 October 2026
Data-branch commit
dadcab56563716abea6c5e31a5e1970080c778ef

Listed protection is a range of the dates FDA lists, not a forecast of market entry, and not legal, regulatory or investment advice.

Dates as listed in FDA's Orange Book capture of 14 October 2026. This page does not say whether a date has passed; compare it with today's date and FDA's current Orange Book. This page shows only what the capture of 14 October 2026 lists. It does not show patents or exclusivities listed before and since removed.

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Listed protection

Listed dates run from 24 Mar 2029 to 5 Dec 2029, each by its own rule; no one date stands for this product.

Earliest listed date
24 Mar 2029US 8,039,009, use patentRule R1 · Products 001, 002, 003, 004 · patent.txt lines 6,548, 6,551, 6,554, 6,557
Latest listed date
5 Dec 2029US 8,058,291, use patentRule R1 · Products 001, 002, 003, 004 · patent.txt lines 6,549, 6,552, 6,555, 6,558
Latest substance patent
None listed
Latest listed patent
5 Dec 2029US 8,058,291, use patentRule R1 · Products 001, 002, 003, 004 · patent.txt lines 6,549, 6,552, 6,555, 6,558
Latest exclusivity
None listed

8 use-code patents, blocking the coded use only

Products

Each product number FDA lists under NDA 206439, as listed. The sections below name products by these numbers.

  • Product 001 · NAMZARIC

    Dosage form; route
    CAPSULE, EXTENDED RELEASE;ORAL
    Strength
    10MG;14MG
    Approval date as listed
    23 Dec 2014
    Type as listed
    RX
    Applicant as listed
    ABBVIE INC

  • Product 002 · NAMZARIC

    Dosage form; route
    CAPSULE, EXTENDED RELEASE;ORAL
    Strength
    10MG;28MG
    Approval date as listed
    23 Dec 2014
    Type as listed
    RX
    Applicant as listed
    ABBVIE INC

  • Product 003 · NAMZARIC

    Dosage form; route
    CAPSULE, EXTENDED RELEASE;ORAL
    Strength
    10MG;7MG
    Approval date as listed
    18 Jul 2016
    Type as listed
    RX
    Applicant as listed
    ABBVIE INC

  • Product 004 · NAMZARIC

    Dosage form; route
    CAPSULE, EXTENDED RELEASE;ORAL
    Strength
    10MG;21MG
    Approval date as listed
    18 Jul 2016
    Type as listed
    RX
    Applicant as listed
    ABBVIE INC

Listed patents

Every patent the FDA lists for this product, as the application holder submitted it, with its flags. The FDA does not verify listings.

3 entries from 12 rows as listed; rows merge only where every cell shown is the same, each with its product numbers.

  • US 8,039,009, use patent

    patent.txt lines 6,548, 6,551, 6,554, 6,557
    Expiry as listed
    24 Mar 2029
    Rule
    R1
    Flags
    use code U-1641
    Product numbers
    001, 002, 003, 004

  • US 8,039,009 with pediatric exclusivity, as listed

    patent.txt lines 6,547, 6,550, 6,553, 6,556
    Expiry as listed
    24 Sep 2029
    Rule
    R2
    Flags
    pediatric, as listed by FDA (from the base row)
    Product numbers
    001, 002, 003, 004

  • US 8,058,291, use patent

    patent.txt lines 6,549, 6,552, 6,555, 6,558
    Expiry as listed
    5 Dec 2029
    Rule
    R1
    Flags
    use code U-1641
    Product numbers
    001, 002, 003, 004

Listed exclusivities

Each exclusivity FDA lists for NDA 206439, with its code, FDA's definition of the code where the store's code list gives one, and its date as listed.

The Orange Book capture of 14 October 2026 lists no exclusivity for NDA 206439.

Paragraph IV list rows giving NDA 206439

The rows of FDA's Paragraph IV certifications list as captured on 17 October 2026 whose RLD/NDA cell gives NDA 206439, each cell as listed.

FDA's Paragraph IV list names no patent number, so it does not say which of the patents on this page an applicant certified against.

The list gives the last qualifying patent's expiry without pediatric exclusivity; in the app's Patents view, the Orange Book lists any *PED period as a separate row with its own date. The two dates describe different things. A blank cell is one FDA left blank in its list. Dates are FDA's own; the last qualifying patent expiry is not recomputed from the Orange Book.

Rows whose RLD/NDA cell we could not read as exactly one NDA number are kept apart on the list page; some may concern this product.

Rows on FDA's Paragraph IV list whose RLD/NDA cell gives NDA 206439

  • Memantine Hydrochloride Extended-release and Donepezil Hydrochloride · Capsules · 14 mg/10 mg and 28 mg/10 mg

    RLD/NDA as listed: Namzaric 206439
    First PIV submission
    18 May 2015
    ANDAs
    1
    180-day status
    Eligible
    Decision posted
    9 Feb 2021
    First applicant approval
    27 Jan 2017
    First marketing
    16 Jan 2025
    Last qualifying patent expiry (as listed by FDA)
    5 Dec 2029

  • Memantine Hydrochloride Extended-release and Donepezil Hydrochloride · Capsules · 21 mg/10 mg

    RLD/NDA as listed: Namzaric 206439
    First PIV submission
    23 Sep 2016
    ANDAs
    1
    180-day status
    Extinguished Deferred
    Decision posted
    3/3/2025 1/8/2024
    First applicant approval
    15 Dec 2023
    First marketing
    1 Jan 2025
    Last qualifying patent expiry (as listed by FDA)
    5 Dec 2029

  • Memantine Hydrochloride Extended-release and Donepezil Hydrochloride · Capsules · 7 mg/10 mg

    RLD/NDA as listed: Namzaric 206439
    First PIV submission
    26 Sep 2016
    ANDAs
    1
    180-day status
    Extinguished
    Decision posted
    9 Feb 2021
    First applicant approval
    blank
    First marketing
    blank
    Last qualifying patent expiry (as listed by FDA)
    5 Dec 2029

Notes from the trace

  • R6 tentative approvals: not in the Orange Book data files as captured; the Drugs@FDA join is a later ruling.

Patents vs FDA exclusivityHow to read the Orange Book data filesParagraph IV certificationWhat changed, by week