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USPTO Patent Grant: B-RAF Kinase Inhibitor Solid Dispersion

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Published March 24th, 2026
Detected March 24th, 2026
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Summary

The USPTO has granted a patent to BeiGene, Ltd. for a stable solid dispersion of a B-RAF kinase dimer inhibitor, Compound 1. The patent covers the composition, methods of preparation, and uses of this solid dispersion, as well as a crystalline form of Compound 1.

What changed

The United States Patent and Trademark Office (USPTO) has issued patent US12582604B2 to BeiGene, Ltd. for a stable solid dispersion containing a specific B-RAF kinase dimer inhibitor (Compound 1) and a stabilizing polymer. The patent also covers methods for preparing this solid dispersion and its therapeutic uses, particularly for treating conditions related to B-RAF kinase activity. The filing date for this application was January 23, 2020, and the patent grant date is March 24, 2026.

This patent grant represents a new intellectual property asset for BeiGene, Ltd. in the area of oncology therapeutics. While not a regulatory rule imposing obligations on other entities, it signifies a novel composition and potential new treatment modality. Companies involved in B-RAF inhibitor research or development should be aware of this granted patent to ensure their activities do not infringe upon the claimed intellectual property. No immediate compliance actions are required for external parties, but it may influence future R&D strategies and licensing considerations.

Source document (simplified)

← USPTO Patent Grants

Stable solid dispersion of a B-RAF kinase dimer inhibitor, methods of preparation, and uses therefor

Grant US12582604B2 Kind: B2 Mar 24, 2026

Assignee

BeiGene, Ltd.

Inventors

Guoliang Zhang, Changyou Zhou, Huangbin Sun

Abstract

Disclosed herein is a physically stable solid dispersion comprising Compound 1, i.e., the B-RAF kinase dimer inhibitor 1-((1S, 1aS, 6bS)-5-((7-oxo-5, 6, 7, 8-tetrahydro-1, 8-naphthyridin-4-yl)oxy)-1a,6b-dihydro-1H-cyclopropa [b] benzofuran-1-yl)-3-(2, 4, 5-trifluorophenyl) urea and a specific stabilizing polymer, the method for preparing the same, and the uses of the solid dispersion. Also disclosed herein is the crystalline form of Compound 1.

CPC Classifications

A61K 9/146 A61K 31/4375 A61K 47/38 A61K 9/0095 A61K 9/20 A61K 9/48 A61K 9/14 A61K 31/4427 A61K 47/61 C07B 2200/13 C07D 471/04 C07D 405/14 A61P 35/00

Filing Date

2020-01-23

Application No.

17423600

Claims

4

View original document →

Classification

Agency
USPTO
Published
March 24th, 2026
Instrument
Notice
Legal weight
Non-binding
Stage
Final
Change scope
Minor
Document ID
US12582604B2

Who this affects

Applies to
Drug manufacturers Pharmaceutical companies
Industry sector
3254 Pharmaceutical Manufacturing
Activity scope
Drug Development Intellectual Property Protection
Geographic scope
United States US

Taxonomy

Primary area
Pharmaceuticals
Operational domain
R&D
Topics
Drug Development Intellectual Property

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