Purple Book product · Biosimilar 351(k)
Fylnetra
pegfilgrastim-pbbk
May 26, 2022
Approved
Biosimilar 351(k)
License type
Rx
Marketing
1
Listed patents
Sourced from the FDA Purple Book · verified Jul 02, 2026
Key dates
Approval
Approval date of this BLA submission.
May 26, 2022
4 yr 3 mo ago
Today
Pharmaceutical detail
Strength
6MG/0.6ML
Dosage form
Injection
Route
Subcutaneous
Presentation
Pre-Filled Syringe
Center
CDER
License number
2131
Product number
001
Submission type
Original
Supplement number
Not listed
Change type
Not listed
Reference product family
View full familyBiosimilar of pegfilgrastim (Neulasta)
Patent list (1)
| Patent | Expires | In | Source |
|---|---|---|---|
| 9,856,287 | Jun 21, 2030 | in 4 yr | FDA |
Source provenance
- 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 Fylnetra's patents expire?
The FDA Purple Book lists 1 published patent for Fylnetra, 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.
Is Fylnetra a biosimilar?
Yes. Fylnetra is a Biosimilar 351(k) referencing pegfilgrastim, licensed under a 351(k) BLA.
Is Fylnetra interchangeable?
Fylnetra is a 351(k) biosimilar but does not carry an interchangeability designation in the Purple Book, so pharmacy-level substitution depends on state law.
What is Fylnetra's BLA number?
Fylnetra is licensed under BLA 761084, held by Kashiv BioSciences, LLC.
When was Fylnetra approved by the FDA?
Fylnetra was approved by the FDA on May 26, 2022.
Related FDA reference tools
- FDA Orange BookApproved drugs, generics, therapeutic-equivalence codes, patents, and exclusivity.
- FDA BiosimilarsThe list of FDA-approved biosimilars and interchangeable biosimilars, by reference product.
- 510(k) Predicate DatabaseSearch FDA 510(k) clearances and map predicate-device lineage.
- FDA 483 & Inspection DatabaseFDA Form 483 observations and inspection records by firm, date, and citation.
