Wednesday, July 8, 2026

Patent intelligence · US

US 6387923

Imminoribitol PNP inhibitors, preparation thereof and use thereof

expired A61PA61P35/00
Status expired
Linked drugs 2
Pipeline programs 6
Years to expiry 0
Applicant portfolio 72
Patent details — US 6387923

Quick answer

US 6387923 (Imminoribitol PNP inhibitors, preparation thereof and use thereof) is held by BioCryst Pharmaceuticals, Inc.. Status: expired. Granted May 14, 2002. Expires May 9, 2022 (0 years remaining) — relevant for patent-cliff and LOE planning.

Key facts

Grant date
Expiration
Claims
5
CPC classes
A61P, A61P35/00

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Frequently asked questions

What is US patent 6387923?

US 6387923 (Imminoribitol PNP inhibitors, preparation thereof and use thereof) is held by BioCryst Pharmaceuticals, Inc.. Status: expired. Granted May 14, 2002. Expires May 9, 2022 (0 years remaining) — relevant for patent-cliff and LOE planning.

Who owns US 6387923?

BioCryst Pharmaceuticals, Inc. is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 72 pharmaceutical patents for this assignee.

When does US 6387923 expire?

Our index shows an expiration date of May 9, 2022 (0 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.