Thursday, July 9, 2026

Patent intelligence · US

US 6646120

Dextran derivatives, preparation and medicinal applications

expired A61PA61P43/00A61P7/02
Status expired
Linked drugs 1
Pipeline programs 6
Years to expiry 0
Applicant portfolio 2
Patent details — US 6646120
Jurisdiction
US
Status
expired
Grant date
Nov 11, 2003
Expiration
Nov 6, 2023
Applicant
BIODEX
Claims
14
CPC classes
A61P, A61P43/00, A61P7/02
View on Google Patents ↗

Quick answer

US 6646120 (Dextran derivatives, preparation and medicinal applications) is held by BIODEX. Status: expired. Granted Nov 11, 2003. Expires Nov 6, 2023 (0 years remaining) — relevant for patent-cliff and LOE planning.

Key facts

Applicant
BIODEX
Grant date
Expiration
Claims
14
CPC classes
A61P, A61P43/00, A61P7/02

More from BIODEX

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    Pharmaceutical compositions with wound healing or anti-complementary activity comprising a dextran derivative

    BIODEX · Expires Aug 31, 2026

    granted

Frequently asked questions

What is US patent 6646120?

US 6646120 (Dextran derivatives, preparation and medicinal applications) is held by BIODEX. Status: expired. Granted Nov 11, 2003. Expires Nov 6, 2023 (0 years remaining) — relevant for patent-cliff and LOE planning.

Who owns US 6646120?

BIODEX is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 2 pharmaceutical patents for this assignee.

When does US 6646120 expire?

Our index shows an expiration date of Nov 6, 2023 (0 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.