Wednesday, July 8, 2026

Patent intelligence · US

US 11517557

Analogs of cyclobenzaprine and amitriptyline

granted A61KA61K31/135A61K31/155A61K31/397
Status granted
Linked drugs 1
Pipeline programs 6
Years to expiry 16
Applicant portfolio 86
Patent details — US 11517557
Jurisdiction
US
Status
granted
Grant date
Dec 6, 2022
Expiration
Dec 1, 2042
Claims
21
CPC classes
A61K, A61K31/135, A61K31/155, A61K31/397
View on Google Patents ↗

Quick answer

US 11517557 (Analogs of cyclobenzaprine and amitriptyline) is held by TONIX PHARMACEUTICALS HOLDING CORP. Status: granted. Granted Dec 6, 2022. Expires Dec 1, 2042 (16 years remaining) — relevant for patent-cliff and LOE planning.

Key facts

Grant date
Expiration
Claims
21
CPC classes
A61K, A61K31/135, A61K31/155, A61K31/397, A61K45/06, A61P

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Frequently asked questions

What is US patent 11517557?

US 11517557 (Analogs of cyclobenzaprine and amitriptyline) is held by TONIX PHARMACEUTICALS HOLDING CORP. Status: granted. Granted Dec 6, 2022. Expires Dec 1, 2042 (16 years remaining) — relevant for patent-cliff and LOE planning.

Who owns US 11517557?

TONIX PHARMACEUTICALS HOLDING CORP is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 86 pharmaceutical patents for this assignee.

When does US 11517557 expire?

Our index shows an expiration date of Dec 1, 2042 (16 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.