Wednesday, July 8, 2026

Patent intelligence · US

US 12264159

Functionalized heterocycles as antiviral agents

granted A61KA61K45/06
Status granted
Linked drugs 1
Pipeline programs 6
Years to expiry 19
Applicant portfolio 218
Patent details — US 12264159

Quick answer

US 12264159 (Functionalized heterocycles as antiviral agents) is held by Enanta Pharmaceuticals, Inc.. Status: granted. Granted Apr 1, 2025. Expires Mar 27, 2045 (19 years remaining) — relevant for patent-cliff and LOE planning.

Key facts

Grant date
Expiration
Claims
19
CPC classes
A61K, A61K45/06

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Frequently asked questions

What is US patent 12264159?

US 12264159 (Functionalized heterocycles as antiviral agents) is held by Enanta Pharmaceuticals, Inc.. Status: granted. Granted Apr 1, 2025. Expires Mar 27, 2045 (19 years remaining) — relevant for patent-cliff and LOE planning.

Who owns US 12264159?

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 12264159 expire?

Our index shows an expiration date of Mar 27, 2045 (19 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.