Wednesday, July 8, 2026

Patent intelligence · US

US 11981716

Activatable interleukin-2 polypeptides and methods of use thereof

granted A61KA61K38/00A61PA61P35/00
Status granted
Linked drugs 1
Pipeline programs 6
Years to expiry 18
Applicant portfolio 10
Patent details — US 11981716
Jurisdiction
US
Status
granted
Grant date
May 14, 2024
Expiration
May 9, 2044
Claims
13
CPC classes
A61K, A61K38/00, A61P, A61P35/00
View on Google Patents ↗

Quick answer

US 11981716 (Activatable interleukin-2 polypeptides and methods of use thereof) is held by Werewolf Therapeutics, Inc.. Status: granted. Granted May 14, 2024. Expires May 9, 2044 (18 years remaining) — relevant for patent-cliff and LOE planning.

Key facts

Grant date
Expiration
Claims
13
CPC classes
A61K, A61K38/00, A61P, A61P35/00

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Frequently asked questions

What is US patent 11981716?

US 11981716 (Activatable interleukin-2 polypeptides and methods of use thereof) is held by Werewolf Therapeutics, Inc.. Status: granted. Granted May 14, 2024. Expires May 9, 2044 (18 years remaining) — relevant for patent-cliff and LOE planning.

Who owns US 11981716?

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 11981716 expire?

Our index shows an expiration date of May 9, 2044 (18 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.