Wednesday, July 8, 2026

Patent intelligence · US

US 11819572

Treatment of pain by administration of sustained-release liposomal anesthetic compositions

granted A61KA61K31/445A61K31/485A61K47/02
Status granted
Linked drugs 1
Pipeline programs 6
Years to expiry 17
Applicant portfolio 57
Patent details — US 11819572
Jurisdiction
US
Status
granted
Grant date
Nov 21, 2023
Expiration
Nov 16, 2043
Claims
30
CPC classes
A61K, A61K31/445, A61K31/485, A61K47/02
View on Google Patents ↗

Quick answer

US 11819572 (Treatment of pain by administration of sustained-release liposomal anesthetic compositions) is held by Pacira Pharmaceuticals, Inc.. Status: granted. Granted Nov 21, 2023. Expires Nov 16, 2043 (17 years remaining) — relevant for patent-cliff and LOE planning.

Key facts

Grant date
Expiration
Claims
30
CPC classes
A61K, A61K31/445, A61K31/485, A61K47/02, A61K47/24, A61K47/26

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Frequently asked questions

What is US patent 11819572?

US 11819572 (Treatment of pain by administration of sustained-release liposomal anesthetic compositions) is held by Pacira Pharmaceuticals, Inc.. Status: granted. Granted Nov 21, 2023. Expires Nov 16, 2043 (17 years remaining) — relevant for patent-cliff and LOE planning.

Who owns US 11819572?

Pacira Pharmaceuticals, Inc. is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 57 pharmaceutical patents for this assignee.

When does US 11819572 expire?

Our index shows an expiration date of Nov 16, 2043 (17 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.