Wednesday, July 8, 2026

Patent intelligence · US

US 8143214

Protein-polymer conjugates

granted A61KA61K47/60A61PA61P1/16
Status granted
Linked drugs 3
Pipeline programs 3
Years to expiry 6
Applicant portfolio 95
Patent details — US 8143214
Jurisdiction
US
Status
granted
Grant date
Mar 27, 2012
Expiration
Mar 22, 2032
Claims
12
CPC classes
A61K, A61K47/60, A61P, A61P1/16
View on Google Patents ↗

Quick answer

US 8143214 (Protein-polymer conjugates) is held by PHARMAESSENTIA CORPORATION. Status: granted. Granted Mar 27, 2012. Expires Mar 22, 2032 (6 years remaining) — relevant for patent-cliff and LOE planning.

Key facts

Grant date
Expiration
Claims
12
CPC classes
A61K, A61K47/60, A61P, A61P1/16, A61P31/00, A61P31/12

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Frequently asked questions

What is US patent 8143214?

US 8143214 (Protein-polymer conjugates) is held by PHARMAESSENTIA CORPORATION. Status: granted. Granted Mar 27, 2012. Expires Mar 22, 2032 (6 years remaining) — relevant for patent-cliff and LOE planning.

Who owns US 8143214?

PHARMAESSENTIA CORPORATION is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 95 pharmaceutical patents for this assignee.

When does US 8143214 expire?

Our index shows an expiration date of Mar 22, 2032 (6 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.