Wednesday, July 8, 2026

Patent intelligence · US

US 10266529

Salts, co-crystals, and polymorphs of an anxiolytic compound

granted A61PA61P21/02A61P25/00A61P25/04
Status granted
Linked drugs 1
Pipeline programs 6
Years to expiry 13
Applicant portfolio 45
Patent details — US 10266529
Jurisdiction
US
Status
granted
Grant date
Apr 23, 2019
Expiration
Apr 18, 2039
Claims
15
CPC classes
A61P, A61P21/02, A61P25/00, A61P25/04
View on Google Patents ↗

Quick answer

US 10266529 (Salts, co-crystals, and polymorphs of an anxiolytic compound) is held by IRONWOOD PHARMACEUTICALS, INC.. Status: granted. Granted Apr 23, 2019. Expires Apr 18, 2039 (13 years remaining) — relevant for patent-cliff and LOE planning.

Key facts

Grant date
Expiration
Claims
15
CPC classes
A61P, A61P21/02, A61P25/00, A61P25/04, A61P25/14, A61P25/16

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Frequently asked questions

What is US patent 10266529?

US 10266529 (Salts, co-crystals, and polymorphs of an anxiolytic compound) is held by IRONWOOD PHARMACEUTICALS, INC.. Status: granted. Granted Apr 23, 2019. Expires Apr 18, 2039 (13 years remaining) — relevant for patent-cliff and LOE planning.

Who owns US 10266529?

IRONWOOD PHARMACEUTICALS, INC. is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 45 pharmaceutical patents for this assignee.

When does US 10266529 expire?

Our index shows an expiration date of Apr 18, 2039 (13 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.