Thursday, July 9, 2026

Patent intelligence · US

US 6750226

Quinuclidine derivatives and their use as muscarinic M3 receptor ligands

expired A61KA61K31/439A61K31/4745A61K31/56
Status expired
Linked drugs 1
Pipeline programs 6
Years to expiry 0
Applicant portfolio 308
Patent details — US 6750226
Jurisdiction
US
Status
expired
Grant date
Jun 15, 2004
Expiration
Jun 10, 2024
Claims
25
CPC classes
A61K, A61K31/439, A61K31/4745, A61K31/56
View on Google Patents ↗

Quick answer

US 6750226 (Quinuclidine derivatives and their use as muscarinic M3 receptor ligands) is held by Almirall Prodesfarma S.A.. Status: expired. Granted Jun 15, 2004. Expires Jun 10, 2024 (0 years remaining) — relevant for patent-cliff and LOE planning.

Key facts

Grant date
Expiration
Claims
25
CPC classes
A61K, A61K31/439, A61K31/4745, A61K31/56, A61K45/06, A61K47/26

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Frequently asked questions

What is US patent 6750226?

US 6750226 (Quinuclidine derivatives and their use as muscarinic M3 receptor ligands) is held by Almirall Prodesfarma S.A.. Status: expired. Granted Jun 15, 2004. Expires Jun 10, 2024 (0 years remaining) — relevant for patent-cliff and LOE planning.

Who owns US 6750226?

Almirall Prodesfarma S.A. is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 308 pharmaceutical patents for this assignee.

When does US 6750226 expire?

Our index shows an expiration date of Jun 10, 2024 (0 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.