Wednesday, July 8, 2026

Patent intelligence · US

US 10428070

Hepatitis B antiviral agents

granted A61KA61K45/06A61PA61P31/14
Status granted
Linked drugs 1
Pipeline programs 6
Years to expiry 13
Applicant portfolio 218
Patent details — US 10428070
Jurisdiction
US
Status
granted
Grant date
Oct 1, 2019
Expiration
Sep 26, 2039
Claims
17
CPC classes
A61K, A61K45/06, A61P, A61P31/14
View on Google Patents ↗

Quick answer

US 10428070 (Hepatitis B antiviral agents) is held by Enanta Pharmaceuticals, Inc.. Status: granted. Granted Oct 1, 2019. Expires Sep 26, 2039 (13 years remaining) — relevant for patent-cliff and LOE planning.

Key facts

Grant date
Expiration
Claims
17
CPC classes
A61K, A61K45/06, A61P, A61P31/14

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Frequently asked questions

What is US patent 10428070?

US 10428070 (Hepatitis B antiviral agents) is held by Enanta Pharmaceuticals, Inc.. Status: granted. Granted Oct 1, 2019. Expires Sep 26, 2039 (13 years remaining) — relevant for patent-cliff and LOE planning.

Who owns US 10428070?

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 10428070 expire?

Our index shows an expiration date of Sep 26, 2039 (13 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.