Wednesday, July 8, 2026

Patent intelligence · US

US 6040340

Implantation rates after in vitro fertilization, treatment of infertility and early pregnancy loss with a nitric oxide donor alone or in com…

expired A61KA61K31/198A61K31/223A61K31/34
Status expired
Linked drugs 2
Pipeline programs 6
Years to expiry 0
Applicant portfolio 8,292
Patent details — US 6040340
Jurisdiction
US
Status
expired
Grant date
Mar 21, 2000
Expiration
Mar 16, 2020
Claims
27
CPC classes
A61K, A61K31/198, A61K31/223, A61K31/34
View on Google Patents ↗

Quick answer

US 6040340 (Implantation rates after in vitro fertilization, treatment of infertility and early pregnancy loss with a nitric oxide donor alone or in combination with progesterone, and a method for contraception with nitric oxide inhibitors) is held by The Board of Regents, Univ. of Texas System. Status: expired. Granted Mar 21, 2000. Expires Mar 16, 2020 (0 years remaining) — relevant for patent-cliff and LOE planning.

Key facts

Grant date
Expiration
Claims
27
CPC classes
A61K, A61K31/198, A61K31/223, A61K31/34, A61K31/44, A61K31/4402

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Frequently asked questions

What is US patent 6040340?

US 6040340 (Implantation rates after in vitro fertilization, treatment of infertility and early pregnancy loss with a nitric oxide donor alone or in combination with progesterone, and a method for contraception with nitric oxide inhibitors) is held by The Board of Regents, Univ. of Texas System. Status: expired. Granted Mar 21, 2000. Expires Mar 16, 2020 (0 years remaining) — relevant for patent-cliff and LOE planning.

Who owns US 6040340?

The Board of Regents, Univ. of Texas System is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 8,292 pharmaceutical patents for this assignee.

When does US 6040340 expire?

Our index shows an expiration date of Mar 16, 2020 (0 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.