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Methods of Preventing Platelet Alloimmunization and Alloimmune Platelet Refractoriness in Transfused Recipients

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Summary

USPTO granted patent US12599667B2 to BLOODWORKS for methods of preventing platelet alloimmunization and alloimmune platelet refractoriness in transfused recipients. The patent covers modifying donor whole blood or platelets prior to transfusion to prevent or reduce transfusion-associated complications. The patent includes 15 claims and was filed on September 28, 2022.

Published by USPTO on changeflow.com . Detected, standardized, and enriched by GovPing. Review our methodology and editorial standards .

What changed

USPTO issued patent grant US12599667B2 to BLOODWORKS for methods of preventing platelet alloimmunization and alloimmune platelet refractoriness in transfused recipients. The invention involves modifying donor whole blood or platelets prior to transfusion to prevent or reduce complications associated with platelet transfusion. The patent was granted on April 14, 2026, with 15 claims. CPC classifications indicate the patent relates to medical device technology for handling and treating blood components.

For healthcare providers and blood banking facilities, this patent establishes intellectual property rights that may affect how platelet transfusion methods are practiced. The patent covers therapeutic methods for reducing alloimmune complications in patients receiving platelet transfusions, which is relevant to transfusion medicine and blood banking services. Parties developing similar methods or technologies should review potential patent claims for licensing or design-around considerations.

Archived snapshot

Apr 18, 2026

GovPing 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.

← USPTO Patent Grants

Methods of preventing platelet alloimmunization and alloimmune platelet refractoriness and induction of tolerance in transfused recipients

Grant US12599667B2 Kind: B2 Apr 14, 2026

Assignee

BLOODWORKS

Inventors

Sherrill J. Slichter

Abstract

Methods and compositions for the prevention or reduction of platelet transfusion associated complications are provided. The subject methods include modifying donor whole blood or platelets prior to transfusion to prevent or reduce alloimmune platelet refractoriness.

CPC Classifications

A01N 1/124 A01N 1/168 A61K 35/14 A61K 35/19 A61K 41/10 A61K 41/17 A61L 2/0047 A61L 2/0076 A61L 2202/11 A61L 2202/22 A61M 1/0281 A61M 1/3683 A61M 2202/0427

Filing Date

2022-09-28

Application No.

17955515

Claims

15

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Last updated

Classification

Agency
USPTO
Published
April 14th, 2026
Instrument
Notice
Legal weight
Binding
Stage
Final
Change scope
Minor
Document ID
US12599667B2

Who this affects

Applies to
Healthcare providers
Industry sector
6211 Healthcare Providers
Activity scope
Patent grant Blood product processing Transfusion medicine
Geographic scope
United States US

Taxonomy

Primary area
Intellectual Property
Operational domain
Legal
Topics
Healthcare Medical Devices

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