Tesla Inc. battery supplier Solus Advance Materials Co. and its four Volta Energy units owe SK nexilis Co. $3.3 million for infringing patents by creating and selling copper foil products that are used inside electric vehicles.
Solus and Volta—considered Volta by the court—infringed five patents, jurors determined Friday in the US District Court for the Eastern District of Texas. The jury found the infringement was willful.
Volta didn’t prove the patents were invalid, the jury also concluded.
SKn sued Volta in November 2023, alleging infringement of multiple patents protecting battery copper foil methods.
Magistrate Judge Roy Payne in May 2025 ...
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