LG Energy Solution Sues Volvo Cars in South Korea Over Battery Patent Dispute

LG Energy Solution has filed a patent lawsuit against Volvo Cars in South Korea, alleging that certain Volvo vehicles equipped with batteries sourced from mainland Chinese manufacturers infringe on its proprietary technology. The complaint, filed with Korean authorities, centers on electrode assembly structure technology, a key component in modern lithium-ion battery cell design that affects energy density, safety and manufacturing efficiency.

Alongside the infringement claim, LG Energy Solution is also seeking a formal trade probe, a step typically pursued through Korea's trade authorities to examine whether imported vehicles or components violate domestic intellectual property protections. Such probes can result in import restrictions if regulators find evidence of patent infringement tied to unfair trade practices.

The move underscores the intensifying legal battles among battery makers as competition from Chinese suppliers such as CATL and other mainland firms continues to reshape the global electric vehicle supply chain. Volvo Cars, majority owned by China's Geely Holding, has increasingly incorporated Chinese-made battery cells into several of its electric and hybrid models in recent years as part of its cost and supply chain strategy.

LG Energy Solution, the world's second-largest EV battery maker and a former supplier to numerous global automakers, has grown more aggressive in defending its patent portfolio as Chinese rivals expand their share of the international battery market. The Seoul-based company has previously pursued IP protection measures in multiple jurisdictions to safeguard technologies developed over decades of battery research.

Neither LG Energy Solution nor Volvo Cars has issued a public statement detailing the specific timeline or scope of the legal proceedings. The case is expected to be closely watched by industry observers as a potential test of how Korean courts and trade regulators handle patent disputes involving foreign automakers using Chinese battery technology.

The outcome could have broader implications for automakers relying on Chinese battery suppliers to sell vehicles in South Korea, as well as for the wider pattern of patent litigation among battery manufacturers competing for dominance in the fast-growing EV market.