Wednesday, July 8, 2026

Patent intelligence · US

US 11534439

Dihydroquinoxaline and dihydropyridopyrazine derivatives as RSV inhibitors

granted A61KA61K31/498A61K31/4985A61K45/06
Status granted
Linked drugs 3
Pipeline programs 6
Years to expiry 16
Applicant portfolio 218
Patent details — US 11534439
Jurisdiction
US
Status
granted
Grant date
Dec 27, 2022
Expiration
Dec 22, 2042
Claims
21
CPC classes
A61K, A61K31/498, A61K31/4985, A61K45/06
View on Google Patents ↗

Quick answer

US 11534439 (Dihydroquinoxaline and dihydropyridopyrazine derivatives as RSV inhibitors) is held by Enanta Pharmaceuticals, 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, A61K31/498, A61K31/4985, A61K45/06, A61P, A61P31/14

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Frequently asked questions

What is US patent 11534439?

US 11534439 (Dihydroquinoxaline and dihydropyridopyrazine derivatives as RSV inhibitors) is held by Enanta Pharmaceuticals, Inc.. Status: granted. Granted Dec 27, 2022. Expires Dec 22, 2042 (16 years remaining) — relevant for patent-cliff and LOE planning.

Who owns US 11534439?

Enanta Pharmaceuticals, Inc. is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 218 pharmaceutical patents for this assignee.

When does US 11534439 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.