omalizumab (Xolair)
omalizumab is an FDA-licensed reference biologic from Genentech, Inc., with 1 approved follow-on biologic.
Reference product
Xolair omalizumab
Genentech, Inc.
View full reference-product record- Approved
- Marketing
- Rx
- Center
- CDER
- Patents
- 8 listed
Molecular structure
Experimental 3D structure for omalizumab from the RCSB Protein Data Bank (PDB 2XA8).

Interactive biological assembly from PDB entry 2XA8. Drag to rotate, scroll to zoom, and inspect the full atomic structure right here, with no need to leave the page.
Exclusivity & patent cliffs
Reference approval
Approval date of the reference omalizumab product.
3 yr 2 mo ago
Patent 10,034,940 expires
Published Purple Book patent expiration.
11 mo ago
Patent 11,078,294 expires
Published Purple Book patent expiration.
in 1 yr 10 mo
Patent 11,987,637 expires
Published Purple Book patent expiration.
in 1 yr 10 mo
Patent 8,574,869 expires
Published Purple Book patent expiration.
in 1 yr 10 mo
Patent 10,017,732 expires
Published Purple Book patent expiration.
in 7 yr 7 mo
Patent 10,676,710 expires
Published Purple Book patent expiration.
in 7 yr 7 mo
Patent 10,829,732 expires
Published Purple Book patent expiration.
in 7 yr 7 mo
Patent 12,030,959 expires
Published Purple Book patent expiration.
in 17 yr 1 mo
Biosimilars & interchangeables for omalizumab
| Product | Proper name | Applicant | Type | BLA | Approved |
|---|---|---|---|---|---|
| Omlyclo | omalizumab-igec | CELLTRION, Inc. | Interchangeable | 761399 |
Published patents
| Patent | Expires | In |
|---|---|---|
| 10,034,940 | 11 mo ago | |
| 11,078,294 | in 1 yr 10 mo | |
| 11,987,637 | in 1 yr 10 mo | |
| 8,574,869 | in 1 yr 10 mo | |
| 10,017,732 | in 7 yr 7 mo | |
| 10,676,710 | in 7 yr 7 mo | |
| 10,829,732 | in 7 yr 7 mo | |
| 12,030,959 | in 17 yr 1 mo |
omalizumab: frequently asked questions
Reference exclusivity, biosimilars, interchangeability, and patents for this molecule, from the FDA Purple Book.
Built from official FDA Purple Book records (monthly downloads, the Advanced Search interface, and the published Patent List), with reference-product, license-type, and exclusivity context for omalizumab.
Related FDA reference tools
- FDA Orange BookApproved drugs, generics, therapeutic-equivalence codes, patents, and exclusivity.
- FDA BiosimilarsFDA-approved biosimilars and interchangeable biosimilars, by reference product.
- 510(k) Predicate DatabaseSearch FDA 510(k) clearances and map predicate-device lineage.
- FDA 483 DatabaseFDA Form 483 observations and inspection records by firm, date, and citation.

