USPTO Patent Grant: Modified Plasma Clotting Factor VIII
Summary
The USPTO has granted patent US12583907B2 to AAVnerGene, INC. for modified human factor VIII polypeptides with enhanced activity. These polypeptides and their encoding viral vectors are intended for treating FVIII deficiencies, such as hemophilia A.
What changed
The United States Patent and Trademark Office (USPTO) has granted patent US12583907B2, titled 'Modified plasma clotting factor VIII and method of use thereof,' to AAVnerGene, INC. The patent covers modified human factor VIII polypeptides that exhibit enhanced factor VIII activity, specifically detailing amino acid substitutions at various positions. It also includes viral vectors encoding these polypeptides and their application in treating FVIII deficiencies, such as hemophilia A.
This patent grant is primarily relevant to pharmaceutical and biotechnology companies involved in the research, development, and commercialization of gene therapies or protein-based treatments for hemophilia A. While it does not impose direct compliance obligations on other entities, it signifies intellectual property protection for specific therapeutic innovations in this area. Companies operating in this space should be aware of this patent and its claims to ensure freedom to operate and to inform their own R&D strategies.
Archived snapshot
Mar 24, 2026GovPing captured this document from the original source. If the source has since changed or been removed, this is the text as it existed at that time.
Modified plasma clotting factor VIII and method of use thereof
Grant US12583907B2 Kind: B2 Mar 24, 2026
Assignee
AAVnerGene, INC.
Inventors
Qizhao Wang, Daozhan Yu
Abstract
Modified human factor VIII polypeptides with enhanced factor VIII activity are described. In some embodiments, the modified human factor VIII polypeptides comprise one or more amino acid substitutions at positions A20, T21, F57, L69, I80, L178, R199, H212, I215, R269, I310, L318, S332, R378, I610 and/or I661. Such polypeptides and viral vectors encoding such polypeptides may be used for treatment of FVIII deficiencies, such as hemophilia A.
CPC Classifications
C07K 14/755 C12N 15/86 A61K 38/00
Filing Date
2023-09-15
Application No.
18468535
Claims
17
Named provisions
Related changes
Get daily alerts for USPTO Patent Grants - Peptides (C07K)
Daily digest delivered to your inbox.
Free. Unsubscribe anytime.
Source
About this page
Every important government, regulator, and court update from around the world. One place. Real-time. Free. Our mission
Source document text, dates, docket IDs, and authority are extracted directly from USPTO.
The summary, classification, recommended actions, deadlines, and penalty information are AI-generated from the original text and may contain errors. Always verify against the source document.
Classification
Who this affects
Taxonomy
Browse Categories
Get alerts for this source
We'll email you when USPTO Patent Grants - Peptides (C07K) publishes new changes.
Subscribed!
Optional. Filters your digest to exactly the updates that matter to you.