Wednesday, July 8, 2026

Patent intelligence · US

US 11897873

Kappa opioid receptor antagonists and products and methods related thereto

granted A61PA61P25/00A61P25/06
Status granted
Linked drugs 1
Pipeline programs 6
Years to expiry 18
Applicant portfolio 38
Patent details — US 11897873

Quick answer

US 11897873 (Kappa opioid receptor antagonists and products and methods related thereto) is held by BLACKTHORN THERAPEUTICS, INC.. Status: granted. Granted Feb 13, 2024. Expires Feb 8, 2044 (18 years remaining) — relevant for patent-cliff and LOE planning.

Key facts

Grant date
Expiration
Claims
6
CPC classes
A61P, A61P25/00, A61P25/06

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Frequently asked questions

What is US patent 11897873?

US 11897873 (Kappa opioid receptor antagonists and products and methods related thereto) is held by BLACKTHORN THERAPEUTICS, INC.. Status: granted. Granted Feb 13, 2024. Expires Feb 8, 2044 (18 years remaining) — relevant for patent-cliff and LOE planning.

Who owns US 11897873?

BLACKTHORN THERAPEUTICS, INC. is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 38 pharmaceutical patents for this assignee.

When does US 11897873 expire?

Our index shows an expiration date of Feb 8, 2044 (18 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.