Thursday, July 9, 2026

Patent intelligence · US

US 11944618

Subcutaneous delivery of polymer conjugates of therapeutic agents

granted A61KA61K31/381A61K31/4045A61K31/4462
Status granted
Linked drugs 1
Pipeline programs 6
Years to expiry 18
Applicant portfolio 25
Patent details — US 11944618
Jurisdiction
US
Status
granted
Grant date
Apr 2, 2024
Expiration
Mar 28, 2044
Claims
13
CPC classes
A61K, A61K31/381, A61K31/4045, A61K31/4462
View on Google Patents ↗

Quick answer

US 11944618 (Subcutaneous delivery of polymer conjugates of therapeutic agents) is held by Serina Therapeutics, Inc.. Status: granted. Granted Apr 2, 2024. Expires Mar 28, 2044 (18 years remaining) — relevant for patent-cliff and LOE planning.

Key facts

Grant date
Expiration
Claims
13
CPC classes
A61K, A61K31/381, A61K31/4045, A61K31/4462, A61K31/4535, A61K31/4745

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Frequently asked questions

What is US patent 11944618?

US 11944618 (Subcutaneous delivery of polymer conjugates of therapeutic agents) is held by Serina Therapeutics, Inc.. Status: granted. Granted Apr 2, 2024. Expires Mar 28, 2044 (18 years remaining) — relevant for patent-cliff and LOE planning.

Who owns US 11944618?

Serina Therapeutics, Inc. is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 25 pharmaceutical patents for this assignee.

When does US 11944618 expire?

Our index shows an expiration date of Mar 28, 2044 (18 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.