Wednesday, July 8, 2026

Patent intelligence · US

US 11179320

Self-regulating osmotic gastroretentive drug delivery systems

granted A61KA61K31/155A61K31/198A61K31/341
Status granted
Linked drugs 1
Pipeline programs 6
Years to expiry 15
Applicant portfolio 32
Patent details — US 11179320
Jurisdiction
US
Status
granted
Grant date
Nov 23, 2021
Expiration
Nov 18, 2041
Claims
24
CPC classes
A61K, A61K31/155, A61K31/198, A61K31/341
View on Google Patents ↗

Quick answer

US 11179320 (Self-regulating osmotic gastroretentive drug delivery systems) is held by Amneal Complex Products Research LLC. Status: granted. Granted Nov 23, 2021. Expires Nov 18, 2041 (15 years remaining) — relevant for patent-cliff and LOE planning.

Key facts

Grant date
Expiration
Claims
24
CPC classes
A61K, A61K31/155, A61K31/198, A61K31/341, A61K31/4164, A61K31/4178

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Frequently asked questions

What is US patent 11179320?

US 11179320 (Self-regulating osmotic gastroretentive drug delivery systems) is held by Amneal Complex Products Research LLC. Status: granted. Granted Nov 23, 2021. Expires Nov 18, 2041 (15 years remaining) — relevant for patent-cliff and LOE planning.

Who owns US 11179320?

Amneal Complex Products Research LLC is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 32 pharmaceutical patents for this assignee.

When does US 11179320 expire?

Our index shows an expiration date of Nov 18, 2041 (15 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.