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Purple Book product · Reference 351(a)

Ervebo

Ebola Zaire Vaccine, Live

351(a)BLA 125690RxLicensed Merck Sharp & Dohme LLC

Dec 19, 2019

Approved

Reference 351(a)

License type

Rx

Marketing

None

Listed patents

Ervebo (Ebola Zaire Vaccine, Live) is Merck Sharp & Dohme LLC's FDA-licensed reference biologic, approved under a 351(a) BLA in 2019. No biosimilars referencing Ervebo are listed in the Purple Book yet. Its 12-year reference-product exclusivity under the BPCIA is listed as ending Dec 19, 1931.

Sourced from the FDA Purple Book · verified Jul 02, 2026

Key dates

  1. Reference product exclusivity ends

    12-year reference-product exclusivity window per BPCIA §351(k)(7).

    Dec 19, 1931

    96 yr ago

  2. First licensure

    Date the BLA was first licensed.

    Dec 19, 2019

    6 yr 8 mo ago

  3. Approval

    Approval date of this BLA submission.

    Dec 19, 2019

    6 yr 8 mo ago

  4. Today

Pharmaceutical detail

Strength

1ML

Dosage form

Injection

Route

Intramuscular

Presentation

Single-Dose Vial

Center

CBER

License number

0002

Product number

001

Submission type

Original

Supplement number

0

Change type

Not listed

Reference product family

View full family

This is the reference (originator) product. No biosimilars or interchangeables reference it in the Purple Book yet.

Patent list

No patent-list records were published for this product. The Purple Book patent list reflects the statutory patent exchange under the BPCIA and is not exhaustive.

Source provenance

Source kind · Advanced Search
Checked Jul 02, 2026
  • advanced-searchAdvanced Search · Jul 02, 2026
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Change history

  • v4Jul 02, 2026
  • v3Jul 02, 2026
  • v2Jul 02, 2026

Frequently asked questions

Does Ervebo have approved biosimilars?

No 351(k) biosimilars or interchangeable biosimilars referencing Ervebo are listed in the FDA Purple Book yet.

When does Ervebo lose reference-product exclusivity?

Ervebo's 12-year reference-product exclusivity under the BPCIA is listed in the Purple Book as ending Dec 19, 1931.

What is Ervebo's BLA number?

Ervebo is licensed under BLA 125690, held by Merck Sharp & Dohme LLC.

When was Ervebo approved by the FDA?

Ervebo was first licensed by the FDA on Dec 19, 2019.

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