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Purple Book product · Reference 351(a)

Neulasta

pegfilgrastim

351(a)BLA 125031RxLicensed Amgen Inc.

Jan 31, 2002

Approved

Reference 351(a)

License type

Rx

Marketing

1

Listed patents

Neulasta (pegfilgrastim) is Amgen Inc.'s FDA-licensed reference biologic, approved under a 351(a) BLA in 2002. The FDA Purple Book lists 1 published patent for it, the last expiring 2030. 10 approved follow-on biologics reference Neulasta (Neulasta Onpro, Fulphila, Udenyca, Ziextenzo, Nyvepria, Fylnetra, Stimufend, Udenyca Onbody, Armlupeg, and Ennumo).

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

Key dates

  1. Approval

    Approval date of this BLA submission.

    Jan 31, 2002

    24 yr 10 mo ago

  2. Orphan exclusivity ends

    7-year orphan-drug exclusivity window.

    Nov 13, 2022

    3 yr 9 mo ago

  3. Today

Pharmaceutical detail

Strength

6MG/0.6ML

Dosage form

Injection

Route

Subcutaneous

Presentation

Pre-Filled Syringe

Center

CDER

License number

1080

Product number

001

Submission type

Original

Supplement number

Not listed

Change type

Not listed

Reference product family

View full family

This is the reference (originator) product. Its approved biosimilars and interchangeables are listed below.

Patent list (1)

Patents published in the FDA Purple Book Patent List for this product, with expiration date and source link.
PatentExpiresInSource
9,856,287Jun 21, 2030in 4 yrFDA

Source provenance

Source kind · Advanced Search
Checked Jul 02, 2026
  • advanced-searchAdvanced Search · Jul 02, 2026
  • monthly-downloadMonthly download · Jul 02, 2026

Change history

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

Frequently asked questions

When do Neulasta's patents expire?

The FDA Purple Book lists 1 published patent for Neulasta, with the last listed patent expiring Jun 21, 2030. Every patent below links to its FDA source record so you can verify the expiration date.

Does Neulasta have approved biosimilars?

Yes. 10 approved follow-on biologics reference Neulasta in the Purple Book: Neulasta Onpro, Fulphila, Udenyca, Ziextenzo, Nyvepria, Fylnetra, Stimufend, Udenyca Onbody, Armlupeg, and Ennumo.

What is Neulasta's BLA number?

Neulasta is licensed under BLA 125031, held by Amgen Inc..

When was Neulasta approved by the FDA?

Neulasta was approved by the FDA on Jan 31, 2002.

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