Wednesday, July 8, 2026

Patent intelligence · US

US 9266861

Method of synthesizing thyroid hormone analogs and polymorphs thereof

granted A61KA61K31/50A61K31/53A61P
Status granted
Linked drugs 1
Pipeline programs 6
Years to expiry 10
Applicant portfolio 26
Patent details — US 9266861
Jurisdiction
US
Status
granted
Grant date
Feb 23, 2016
Expiration
Feb 18, 2036
Claims
17
CPC classes
A61K, A61K31/50, A61K31/53, A61P
View on Google Patents ↗

Quick answer

US 9266861 (Method of synthesizing thyroid hormone analogs and polymorphs thereof) is held by Madrigal Pharmaceuticals, Inc.. Status: granted. Granted Feb 23, 2016. Expires Feb 18, 2036 (10 years remaining) — relevant for patent-cliff and LOE planning.

Key facts

Grant date
Expiration
Claims
17
CPC classes
A61K, A61K31/50, A61K31/53, A61P, A61P5/14, A61P9/00

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Frequently asked questions

What is US patent 9266861?

US 9266861 (Method of synthesizing thyroid hormone analogs and polymorphs thereof) is held by Madrigal Pharmaceuticals, Inc.. Status: granted. Granted Feb 23, 2016. Expires Feb 18, 2036 (10 years remaining) — relevant for patent-cliff and LOE planning.

Who owns US 9266861?

Madrigal Pharmaceuticals, Inc. is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 26 pharmaceutical patents for this assignee.

When does US 9266861 expire?

Our index shows an expiration date of Feb 18, 2036 (10 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.