Wednesday, July 8, 2026

Patent intelligence · US

US 6498154

Cyclic regimens using quinazolinone and benzoxazine derivatives

expired A61KA61K31/565A61K31/57A61K45/06
Status expired
Linked drugs 2
Pipeline programs 6
Years to expiry 0
Applicant portfolio 133
Patent details — US 6498154
Jurisdiction
US
Status
expired
Grant date
Dec 24, 2002
Expiration
Dec 19, 2022
Claims
17
CPC classes
A61K, A61K31/565, A61K31/57, A61K45/06
View on Google Patents ↗

Quick answer

US 6498154 (Cyclic regimens using quinazolinone and benzoxazine derivatives) is held by Ligand Pharmaceuticals Incorporated. Status: expired. Granted Dec 24, 2002. Expires Dec 19, 2022 (0 years remaining) — relevant for patent-cliff and LOE planning.

Key facts

Grant date
Expiration
Claims
17
CPC classes
A61K, A61K31/565, A61K31/57, A61K45/06, A61P, A61P15/18

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Frequently asked questions

What is US patent 6498154?

US 6498154 (Cyclic regimens using quinazolinone and benzoxazine derivatives) is held by Ligand Pharmaceuticals Incorporated. Status: expired. Granted Dec 24, 2002. Expires Dec 19, 2022 (0 years remaining) — relevant for patent-cliff and LOE planning.

Who owns US 6498154?

Ligand Pharmaceuticals Incorporated is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 133 pharmaceutical patents for this assignee.

When does US 6498154 expire?

Our index shows an expiration date of Dec 19, 2022 (0 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.