China leads solid-state battery patent surge in Q1 2026

More than 1,710 solid-state battery patent applications were published globally in Q1 2026, with the majority originating from China, according to IP analysis firm KnowMade. The data points to continued acceleration in solid-state lithium-ion battery filings, led by Chinese players including FAW, CATL and Gotion.

FAW recorded an 800% increase in filing activity against its 2025 quarterly average, driven largely by co-assignments with Chinese institutions including CATARC, Jilin University and the Shanghai Institute of Ceramics, with filings focused on electrodes and electrolytes. CATL posted a 115% increase in new applications, while COSMX rose 300% and GEM 177%. Gotion also posted significant growth at 92% above its prior-year quarterly average.

On the grant side, over 660 patent families received first-time grants in the quarter. Samsung was up 50% against its 2025 average, Honda rose 128% and CATL posted a 111% increase in granted patents. Toyota was an exception, recording a 56% decline in grants and a 17% fall in new filings versus its 2025 quarterly average. Korean firm LG Energy Solution also posted a 27% decline in new filings, though its granted patent count rose 20%.

The quarter recorded more than 190 IP newcomers, predominantly from China, further intensifying competition in the field. Non-Chinese entrants included French research institute LEPMI, working with Renata Batteries on composite electrode and solid electrolyte technologies, and US firm Amionx focusing on battery cell safety and thermal regulation. More than 60 patents also expired or lapsed during the period, reflecting ongoing portfolio management across established players.

Source: KnowMade