Wednesday, July 8, 2026

Patent intelligence · US

US 6436966

Adenosine A3 receptor antagonists

expired A61KA61K31/4436A61K31/4439A61P
Status expired
Linked drugs 1
Pipeline programs 6
Years to expiry 0
Applicant portfolio 1,436
Patent details — US 6436966
Jurisdiction
US
Status
expired
Grant date
Aug 20, 2002
Expiration
Aug 15, 2022
Claims
9
CPC classes
A61K, A61K31/4436, A61K31/4439, A61P
View on Google Patents ↗

Quick answer

US 6436966 (Adenosine A3 receptor antagonists) is held by Takeda Chemical Ind., Ltd.. Status: expired. Granted Aug 20, 2002. Expires Aug 15, 2022 (0 years remaining) — relevant for patent-cliff and LOE planning.

Key facts

Grant date
Expiration
Claims
9
CPC classes
A61K, A61K31/4436, A61K31/4439, A61P, A61P11/00, A61P11/06

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Frequently asked questions

What is US patent 6436966?

US 6436966 (Adenosine A3 receptor antagonists) is held by Takeda Chemical Ind., Ltd.. Status: expired. Granted Aug 20, 2002. Expires Aug 15, 2022 (0 years remaining) — relevant for patent-cliff and LOE planning.

Who owns US 6436966?

Takeda Chemical Ind., Ltd. is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 1,436 pharmaceutical patents for this assignee.

When does US 6436966 expire?

Our index shows an expiration date of Aug 15, 2022 (0 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.