Saturday, July 11, 2026

Patent intelligence · US

US 6251858

Derivatives of oligosides, their process of preparation and their applications

expired A61KA61K47/61A61PA61P31/12
Status expired
Linked drugs 1
Pipeline programs 6
Years to expiry 0
Applicant portfolio 201
Patent details — US 6251858
Jurisdiction
US
Status
expired
Grant date
Jun 26, 2001
Expiration
Jun 21, 2021
Claims
17
CPC classes
A61K, A61K47/61, A61P, A61P31/12
View on Google Patents ↗

Quick answer

US 6251858 (Derivatives of oligosides, their process of preparation and their applications) is held by I.D.M. Immuno-Designed Molecules. Status: expired. Granted Jun 26, 2001. Expires Jun 21, 2021 (0 years remaining) — relevant for patent-cliff and LOE planning.

Key facts

Grant date
Expiration
Claims
17
CPC classes
A61K, A61K47/61, A61P, A61P31/12, A61P35/02

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Frequently asked questions

What is US patent 6251858?

US 6251858 (Derivatives of oligosides, their process of preparation and their applications) is held by I.D.M. Immuno-Designed Molecules. Status: expired. Granted Jun 26, 2001. Expires Jun 21, 2021 (0 years remaining) — relevant for patent-cliff and LOE planning.

Who owns US 6251858?

I.D.M. Immuno-Designed Molecules is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 201 pharmaceutical patents for this assignee.

When does US 6251858 expire?

Our index shows an expiration date of Jun 21, 2021 (0 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.