Wednesday, July 8, 2026

Patent intelligence · US

US 6864350

Soluble, degradable poly (ethylene glycol) derivatives for controllable release of bound molecules into solution

expired A61KA61K47/60
Status expired
Linked drugs 3
Pipeline programs 6
Years to expiry 0
Applicant portfolio 423
Related coverage 2
Patent details — US 6864350

Quick answer

US 6864350 (Soluble, degradable poly (ethylene glycol) derivatives for controllable release of bound molecules into solution) is held by Nektar Therapeutics AL, Corporation. Status: expired. Granted Mar 8, 2005. Expires Mar 3, 2025 (0 years remaining) — relevant for patent-cliff and LOE planning.

Key facts

Grant date
Expiration
Claims
44
CPC classes
A61K, A61K47/60

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Related coverage

Frequently asked questions

What is US patent 6864350?

US 6864350 (Soluble, degradable poly (ethylene glycol) derivatives for controllable release of bound molecules into solution) is held by Nektar Therapeutics AL, Corporation. Status: expired. Granted Mar 8, 2005. Expires Mar 3, 2025 (0 years remaining) — relevant for patent-cliff and LOE planning.

Who owns US 6864350?

Nektar Therapeutics AL, Corporation is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 423 pharmaceutical patents for this assignee.

When does US 6864350 expire?

Our index shows an expiration date of Mar 3, 2025 (0 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.