LG Energy Solution Sues EVE Energy in the U.S. Over Cylindrical Battery Patent Infringement

[Patent Litigation] LG Energy Solution has filed a lawsuit against EVE Energy in the United States, alleging infringement of five battery-related patents.

Core Development: LG Precisely Targets EVE Energy's High-Rate Cylindrical Batteries Bound for Overseas Markets

Tulip Innovation (LG's patent platform) initiated a simultaneous ITC investigation and a federal court lawsuit in Texas on July 22, 2026, accusing EVE Energy of infringing five U.S. utility patents covering tab-less electrode structure, separator materials, winding process, and top-cap components.

Key Details: Disputed Products Focus on Mainstream 18650/21700 Models

The accused products include EVE’s full range of small cylindrical cells—20P, 29V, 40PL, 50PL, and 50E—primarily supplied to the power tools and outdoor power equipment markets, with no involvement of automotive traction batteries. LG has also named several U.S.-based power tool manufacturers that source EVE cells as co-defendants.

Industry Impact: ITC Exclusion Order Could Disrupt Chinese Lithium Battery Supply Chains

If LG prevails, the ITC may issue an import exclusion order, banning the entry of the implicated batteries and end-products into the U.S., directly affecting EVE Energy’s high-rate battery business in the American market.