Wednesday, July 8, 2026

Patent intelligence · US

US 11844837

Compositions of a polyorthoester and an organic acid excipient

granted A61KA61K31/00A61K31/167A61K31/245
Status granted
Linked drugs 2
Pipeline programs 6
Years to expiry 17
Applicant portfolio 46
Patent details — US 11844837
Jurisdiction
US
Status
granted
Grant date
Dec 19, 2023
Expiration
Dec 14, 2043
Claims
9
CPC classes
A61K, A61K31/00, A61K31/167, A61K31/245
View on Google Patents ↗

Quick answer

US 11844837 (Compositions of a polyorthoester and an organic acid excipient) is held by Heron Therapeutics, Inc.. Status: granted. Granted Dec 19, 2023. Expires Dec 14, 2043 (17 years remaining) — relevant for patent-cliff and LOE planning.

Key facts

Grant date
Expiration
Claims
9
CPC classes
A61K, A61K31/00, A61K31/167, A61K31/245, A61K31/445, A61K31/47

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Frequently asked questions

What is US patent 11844837?

US 11844837 (Compositions of a polyorthoester and an organic acid excipient) is held by Heron Therapeutics, Inc.. Status: granted. Granted Dec 19, 2023. Expires Dec 14, 2043 (17 years remaining) — relevant for patent-cliff and LOE planning.

Who owns US 11844837?

Heron Therapeutics, Inc. is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 46 pharmaceutical patents for this assignee.

When does US 11844837 expire?

Our index shows an expiration date of Dec 14, 2043 (17 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.