Wednesday, July 8, 2026

Patent intelligence · US

US 9181338

Human antibody specific for IL-1alpha

granted A61KA61K2039/55527A61K39/3955A61P
Status granted
Linked drugs 1
Pipeline programs 6
Years to expiry 9
Applicant portfolio 31
Patent details — US 9181338
Jurisdiction
US
Status
granted
Grant date
Nov 10, 2015
Expiration
Nov 5, 2035
Applicant
XBIOTECH INC.
Claims
2
CPC classes
A61K, A61K2039/55527, A61K39/3955, A61P
View on Google Patents ↗

Quick answer

US 9181338 (Human antibody specific for IL-1alpha) is held by XBIOTECH INC.. Status: granted. Granted Nov 10, 2015. Expires Nov 5, 2035 (9 years remaining) — relevant for patent-cliff and LOE planning.

Key facts

Applicant
XBIOTECH INC.
Grant date
Expiration
Claims
2
CPC classes
A61K, A61K2039/55527, A61K39/3955, A61P, A61P29/00, A61P35/00

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Frequently asked questions

What is US patent 9181338?

US 9181338 (Human antibody specific for IL-1alpha) is held by XBIOTECH INC.. Status: granted. Granted Nov 10, 2015. Expires Nov 5, 2035 (9 years remaining) — relevant for patent-cliff and LOE planning.

Who owns US 9181338?

XBIOTECH INC. is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 31 pharmaceutical patents for this assignee.

When does US 9181338 expire?

Our index shows an expiration date of Nov 5, 2035 (9 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.