Wednesday, July 8, 2026

Patent intelligence · US

US 11311503

Sterile aqueous choline salt compositions

granted A61KA61K31/14A61K9/0019
Status granted
Linked drugs 1
Pipeline programs 6
Years to expiry 16
Applicant portfolio 2
Related coverage 1
Patent details — US 11311503

Quick answer

US 11311503 (Sterile aqueous choline salt compositions) is held by PROTARA THERAPEUTICS, INC.. Status: granted. Granted Apr 26, 2022. Expires Apr 21, 2042 (16 years remaining) — relevant for patent-cliff and LOE planning.

Key facts

Grant date
Expiration
Claims
20
CPC classes
A61K, A61K31/14, A61K9/0019

More from PROTARA THERAPEUTICS, INC.

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  1. US 12083081

    Sterile aqueous choline salt compositions

    PROTARA THERAPEUTICS, INC. · Expires Sep 5, 2044

    granted

Related coverage

Frequently asked questions

What is US patent 11311503?

US 11311503 (Sterile aqueous choline salt compositions) is held by PROTARA THERAPEUTICS, INC.. Status: granted. Granted Apr 26, 2022. Expires Apr 21, 2042 (16 years remaining) — relevant for patent-cliff and LOE planning.

Who owns US 11311503?

PROTARA THERAPEUTICS, INC. is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 2 pharmaceutical patents for this assignee.

When does US 11311503 expire?

Our index shows an expiration date of Apr 21, 2042 (16 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.