Battery recycling patents grow 7x in a decade as EV waste tsunami looms

A joint EPO/IEA report tracking two decades of patent data shows battery circularity inventions growing at a 42% compound annual rate since 2017, dwarfing the 16% rate for battery manufacturing and 2% across all technology fields. The trigger was the moment global EV sales first crossed one million units that year. End-of-life EV batteries are projected to jump from 1.2 million in 2030 to 14 million by 2040, while overall battery market capacity is on track to scale from 1,100 GWh in 2024 to 3,500 GWh by 2030.

Asia dominates the recycling value chain, holding 63% of international patent families in 2023. CATL’s recycling arm Brunp has displaced earlier leaders like Toyota, LG, and Sumitomo at the top. China’s share of battery metal refining patents has climbed from roughly 10% to 70% of national filings in two decades, and its circularity IPF share grew from 5% to 29% between 2013 and 2023.

Europe’s share has slipped slightly to 21% but shows strength in collection logistics and hydrometallurgical recovery, led by Umicore, BASF, and France’s CEA. The report frames recent EU policy moves — the Batteries Regulation, Industrial Accelerator Act, and RESourceEU plan — as the scaffolding needed to scale fragmented recycling streams and reduce dependence on imported critical minerals, though execution depends on aligning industrial investment with the existing research base.