Wednesday, July 8, 2026

Patent intelligence · US

US 10273228

Hepatitis B viral assembly effectors

granted A61KA61K31/496A61K31/506A61P
Status granted
Linked drugs 1
Pipeline programs 6
Years to expiry 13
Applicant portfolio 14
Patent details — US 10273228
Jurisdiction
US
Status
granted
Grant date
Apr 30, 2019
Expiration
Apr 25, 2039
Claims
15
CPC classes
A61K, A61K31/496, A61K31/506, A61P
View on Google Patents ↗

Quick answer

US 10273228 (Hepatitis B viral assembly effectors) is held by ASSEMBLY BIOSCIENCES, INC.. Status: granted. Granted Apr 30, 2019. Expires Apr 25, 2039 (13 years remaining) — relevant for patent-cliff and LOE planning.

Key facts

Grant date
Expiration
Claims
15
CPC classes
A61K, A61K31/496, A61K31/506, A61P, A61P31/20

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Frequently asked questions

What is US patent 10273228?

US 10273228 (Hepatitis B viral assembly effectors) is held by ASSEMBLY BIOSCIENCES, INC.. Status: granted. Granted Apr 30, 2019. Expires Apr 25, 2039 (13 years remaining) — relevant for patent-cliff and LOE planning.

Who owns US 10273228?

ASSEMBLY BIOSCIENCES, INC. is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 14 pharmaceutical patents for this assignee.

When does US 10273228 expire?

Our index shows an expiration date of Apr 25, 2039 (13 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.