Wednesday, July 8, 2026

Patent intelligence · US

US 10851146

Method for preparing liraglutide intermediate polypeptide

granted A61KA61K38/26
Status granted
Linked drugs 1
Pipeline programs 6
Years to expiry 14
Applicant portfolio 15
Related coverage 1
Patent details — US 10851146

Quick answer

US 10851146 (Method for preparing liraglutide intermediate polypeptide) is held by AMPHASTAR NANJING PHARMACEUTICALS INC. Status: granted. Granted Dec 1, 2020. Expires Nov 26, 2040 (14 years remaining) — relevant for patent-cliff and LOE planning.

Key facts

Grant date
Expiration
Claims
12
CPC classes
A61K, A61K38/26

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Frequently asked questions

What is US patent 10851146?

US 10851146 (Method for preparing liraglutide intermediate polypeptide) is held by AMPHASTAR NANJING PHARMACEUTICALS INC. Status: granted. Granted Dec 1, 2020. Expires Nov 26, 2040 (14 years remaining) — relevant for patent-cliff and LOE planning.

Who owns US 10851146?

AMPHASTAR NANJING PHARMACEUTICALS INC is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 15 pharmaceutical patents for this assignee.

When does US 10851146 expire?

Our index shows an expiration date of Nov 26, 2040 (14 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.