Wednesday, July 8, 2026

Patent intelligence · US

US 6759408

Combination regimens using progesterone receptor modulators

expired A61KA61K31/535A61K31/56
Status expired
Linked drugs 1
Pipeline programs 6
Years to expiry 0
Applicant portfolio 133
Patent details — US 6759408

Quick answer

US 6759408 (Combination regimens using progesterone receptor modulators) is held by Ligand Pharmaceuticals Incorporated. Status: expired. Granted Jul 6, 2004. Expires Jul 1, 2024 (0 years remaining) — relevant for patent-cliff and LOE planning.

Key facts

Grant date
Expiration
Claims
27
CPC classes
A61K, A61K31/535, A61K31/56

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Frequently asked questions

What is US patent 6759408?

US 6759408 (Combination regimens using progesterone receptor modulators) is held by Ligand Pharmaceuticals Incorporated. Status: expired. Granted Jul 6, 2004. Expires Jul 1, 2024 (0 years remaining) — relevant for patent-cliff and LOE planning.

Who owns US 6759408?

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 6759408 expire?

Our index shows an expiration date of Jul 1, 2024 (0 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.