Wednesday, July 8, 2026

Patent intelligence · US

US 8449884

Clotting factor-fc chimeric proteins to treat hemophilia

granted A61KA61K2039/60A61K38/36A61K38/4846
Status granted
Linked drugs 1
Pipeline programs 6
Years to expiry 7
Applicant portfolio 86
Patent details — US 8449884
Jurisdiction
US
Status
granted
Grant date
May 28, 2013
Expiration
May 23, 2033
Claims
24
CPC classes
A61K, A61K2039/60, A61K38/36, A61K38/4846
View on Google Patents ↗

Quick answer

US 8449884 (Clotting factor-fc chimeric proteins to treat hemophilia) is held by Syntonix Pharmaceuticals, Inc.. Status: granted. Granted May 28, 2013. Expires May 23, 2033 (7 years remaining) — relevant for patent-cliff and LOE planning.

Key facts

Grant date
Expiration
Claims
24
CPC classes
A61K, A61K2039/60, A61K38/36, A61K38/4846, A61K45/06, A61K47/6815

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Frequently asked questions

What is US patent 8449884?

US 8449884 (Clotting factor-fc chimeric proteins to treat hemophilia) is held by Syntonix Pharmaceuticals, Inc.. Status: granted. Granted May 28, 2013. Expires May 23, 2033 (7 years remaining) — relevant for patent-cliff and LOE planning.

Who owns US 8449884?

Syntonix Pharmaceuticals, Inc. is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 86 pharmaceutical patents for this assignee.

When does US 8449884 expire?

Our index shows an expiration date of May 23, 2033 (7 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.