Wednesday, July 8, 2026

Patent intelligence · US

US 6080871

Sulfonamides and sulfamides as H.sub.3 receptor antagonists

expired A61PA61P43/00
Status expired
Linked drugs 1
Pipeline programs 6
Years to expiry 0
Applicant portfolio 38
Patent details — US 6080871

Quick answer

US 6080871 (Sulfonamides and sulfamides as H.sub.3 receptor antagonists) is held by The James Black Foundation Limited. Status: expired. Granted Jun 27, 2000. Expires Jun 22, 2020 (0 years remaining) — relevant for patent-cliff and LOE planning.

Key facts

Grant date
Expiration
Claims
23
CPC classes
A61P, A61P43/00

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Frequently asked questions

What is US patent 6080871?

US 6080871 (Sulfonamides and sulfamides as H.sub.3 receptor antagonists) is held by The James Black Foundation Limited. Status: expired. Granted Jun 27, 2000. Expires Jun 22, 2020 (0 years remaining) — relevant for patent-cliff and LOE planning.

Who owns US 6080871?

The James Black Foundation Limited is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 38 pharmaceutical patents for this assignee.

When does US 6080871 expire?

Our index shows an expiration date of Jun 22, 2020 (0 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.