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China's Top Electric Car Battery Maker Raises Stakes of Legal Battle With Rival

  • CATL is now seeking $77 million in patent-infringement damages
  • Smaller rival CALB could become No. 2 EV battery maker by 2030
CATL is the world’s biggest electric vehicle battery maker.

CATL is the world’s biggest electric vehicle battery maker.

Photographer: Qilai Shen/Bloomberg
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Chinese battery giant Contemporary Amperex Technology Co. Ltd. has raised the stakes in a legal dispute with smaller rival China Aviation Lithium Battery Co. Ltd. as competition for electric-vehicle customers turns increasingly cut throat.

CATL, as the world’s biggest EV battery maker is known, this week said it increased a damages claim against CALB for alleged patent infringement to 518 million yuan ($77.4 million) from 185 million yuan. The Ningde, Fujian-based company says CALB is infringing upon five of its patented battery-related products and structures.