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Purple Book product · Reference 351(a)

Thrombate Iii

Antithrombin III (Human)

351(a)BLA 103196RxLicensed Grifols Therapeutics LLC

Dec 30, 1991

Approved

Reference 351(a)

License type

Rx

Marketing

None

Listed patents

Thrombate Iii (Antithrombin III (Human)) is Grifols Therapeutics LLC's FDA-licensed reference biologic, approved under a 351(a) BLA in 1991. No biosimilars referencing Thrombate Iii are listed in the Purple Book yet.

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

Key dates

  1. Approval

    Approval date of this BLA submission.

    Dec 30, 1991

    35 yr 1 mo ago

  2. Orphan exclusivity ends

    7-year orphan-drug exclusivity window.

    Dec 30, 1998

    27 yr 11 mo ago

  3. Today

Pharmaceutical detail

Strength

500IU

Dosage form

For Injection

Route

Intravenous

Presentation

Single-Dose Vial

Center

CBER

License number

1871

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
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Change history

  • v6Jul 02, 2026
  • v5Jul 02, 2026
  • v4Jul 02, 2026
  • v3Jul 02, 2026
  • v2Jul 02, 2026

Frequently asked questions

Does Thrombate Iii have approved biosimilars?

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

What is Thrombate Iii's BLA number?

Thrombate Iii is licensed under BLA 103196, held by Grifols Therapeutics LLC.

When was Thrombate Iii approved by the FDA?

Thrombate Iii was approved by the FDA on Dec 30, 1991.

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