Wednesday, July 8, 2026

Patent intelligence · US

US 9566271

Selective serotonin 2A/2C receptor inverse agonists as therapeutics for neurodegenerative diseases

granted A61KA61K31/194A61K31/4468A61K45/06
Status granted
Linked drugs 2
Pipeline programs 6
Years to expiry 11
Applicant portfolio 77
Patent details — US 9566271
Jurisdiction
US
Status
granted
Grant date
Feb 14, 2017
Expiration
Feb 9, 2037
Claims
15
CPC classes
A61K, A61K31/194, A61K31/4468, A61K45/06
View on Google Patents ↗

Quick answer

US 9566271 (Selective serotonin 2A/2C receptor inverse agonists as therapeutics for neurodegenerative diseases) is held by ACADIA Pharmaceuticals Inc.. Status: granted. Granted Feb 14, 2017. Expires Feb 9, 2037 (11 years remaining) — relevant for patent-cliff and LOE planning.

Key facts

Grant date
Expiration
Claims
15
CPC classes
A61K, A61K31/194, A61K31/4468, A61K45/06, A61K9/20, A61P

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Frequently asked questions

What is US patent 9566271?

US 9566271 (Selective serotonin 2A/2C receptor inverse agonists as therapeutics for neurodegenerative diseases) is held by ACADIA Pharmaceuticals Inc.. Status: granted. Granted Feb 14, 2017. Expires Feb 9, 2037 (11 years remaining) — relevant for patent-cliff and LOE planning.

Who owns US 9566271?

ACADIA Pharmaceuticals Inc. is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 77 pharmaceutical patents for this assignee.

When does US 9566271 expire?

Our index shows an expiration date of Feb 9, 2037 (11 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.