USPTO Patent Application for Secondary Battery Design

ChangeBridge: Patent Apps - Batteries (H01M)

Published November 30th, 2025

Detected March 27th, 2026

Summary

The USPTO has published a new patent application, US20260088455A1, detailing a design for a secondary battery. The application, filed on November 30, 2025, includes specific features for the electrode assembly, case, and retainer of the battery.

View original document View source feed page

What changed

The United States Patent and Trademark Office (USPTO) has published patent application US20260088455A1, which describes a novel design for a secondary battery. The application details an electrode assembly with specific tab placements, a case designed to accommodate the assembly, and a retainer with a concave-convex structure. The filing date for this application was November 30, 2025.

This publication represents a new patent application and does not impose immediate compliance obligations. However, manufacturers in the battery sector should be aware of this potential intellectual property as it may influence future product development and existing patent landscapes. Companies developing similar battery technologies may need to consider this application in their freedom-to-operate analyses.

Source document (simplified)

← USPTO Patent Applications

SECONDARY BATTERY

Application US20260088455A1 Kind: A1 Mar 26, 2026

Inventors

Hyun Soo LEE, Jun Sun YONG

Abstract

A secondary battery includes: an electrode assembly including a negative electrode tab at a first end and a positive electrode tab at a second end; a case including a pair of first side portions facing each of a pair of long side portions of the electrode assembly, and a pair of second side portions facing each of a pair of short side portions of the electrode assembly, the case being open in directions of the negative electrode tab and the positive electrode tab; and a retainer between at least one of the second side portions and the electrode assembly and including a concave-convex structure.