The United States Patent and Trademark Office (USPTO) has published a new patent application, US20260088285A1, concerning an anode active material for lithium secondary batteries. The application, filed on December 4, 2025, by inventors Young Mo YANG, Joon Hyung MOON, Do Ae YU, Ju Ho CHUNG, and Jae Young CHOI, describes a composite material featuring carbon-based particles with internal or surface silicon-containing coatings and a silicon oxide surface layer, with a predefined silicon oxidation number ratio.

This publication represents a new patent application and does not impose any immediate regulatory obligations or compliance deadlines on manufacturers. It is primarily of interest to entities involved in battery technology research, development, and manufacturing, particularly those in the lithium-ion battery sector. Companies operating in this space may wish to review the application for potential intellectual property insights or to understand emerging technologies in energy storage.