Wednesday, July 8, 2026

Patent intelligence · US

US 12311059

Process for the preparation of erythrocytes loaded with one or more substances of pharmaceutical interest and so obtained erythrocytes

granted A61KA61K31/661A61K35/18A61K38/45
Status granted
Linked drugs 1
Pipeline programs 6
Years to expiry 19
Applicant portfolio 1
Patent details — US 12311059
Jurisdiction
US
Status
granted
Grant date
May 27, 2025
Expiration
May 22, 2045
Claims
5
CPC classes
A61K, A61K31/661, A61K35/18, A61K38/45
View on Google Patents ↗

Quick answer

US 12311059 (Process for the preparation of erythrocytes loaded with one or more substances of pharmaceutical interest and so obtained erythrocytes) is held by Quince Therapeutics S.p.A.. Status: granted. Granted May 27, 2025. Expires May 22, 2045 (19 years remaining) — relevant for patent-cliff and LOE planning.

Key facts

Grant date
Expiration
Claims
5
CPC classes
A61K, A61K31/661, A61K35/18, A61K38/45, A61K9/5068, A61K9/5089

Frequently asked questions

What is US patent 12311059?

US 12311059 (Process for the preparation of erythrocytes loaded with one or more substances of pharmaceutical interest and so obtained erythrocytes) is held by Quince Therapeutics S.p.A.. Status: granted. Granted May 27, 2025. Expires May 22, 2045 (19 years remaining) — relevant for patent-cliff and LOE planning.

Who owns US 12311059?

Quince Therapeutics S.p.A. is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 1 pharmaceutical patents for this assignee.

When does US 12311059 expire?

Our index shows an expiration date of May 22, 2045 (19 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.