Wednesday, July 8, 2026

Patent intelligence · US

US 11535658

Activatable interleukin-2 polypeptides and methods of use thereof

granted A61KA61K38/00A61PA61P35/00
Status granted
Linked drugs 1
Pipeline programs 6
Years to expiry 16
Applicant portfolio 10
Patent details — US 11535658
Jurisdiction
US
Status
granted
Grant date
Dec 27, 2022
Expiration
Dec 22, 2042
Claims
21
CPC classes
A61K, A61K38/00, A61P, A61P35/00
View on Google Patents ↗

Quick answer

US 11535658 (Activatable interleukin-2 polypeptides and methods of use thereof) is held by Werewolf Therapeutics, Inc.. Status: granted. Granted Dec 27, 2022. Expires Dec 22, 2042 (16 years remaining) — relevant for patent-cliff and LOE planning.

Key facts

Grant date
Expiration
Claims
21
CPC classes
A61K, A61K38/00, A61P, A61P35/00

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Frequently asked questions

What is US patent 11535658?

US 11535658 (Activatable interleukin-2 polypeptides and methods of use thereof) is held by Werewolf Therapeutics, Inc.. Status: granted. Granted Dec 27, 2022. Expires Dec 22, 2042 (16 years remaining) — relevant for patent-cliff and LOE planning.

Who owns US 11535658?

Werewolf Therapeutics, Inc. is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 10 pharmaceutical patents for this assignee.

When does US 11535658 expire?

Our index shows an expiration date of Dec 22, 2042 (16 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.