Legal

Evolution of Worldwide Patent Activity by Main Battery Technologies Li-ion batteries remain the core focus of innovation, whereas Na-ion technologies show rapid growth in patent applications since 2021, whiled Zn-ion technologies gain visibility since 2022, driven by Chinese academic and R&D applicants. Most alternative chemistries exhibit steady filing levels year by year. IP DYNAMICS BY MAIN BATTERY TECHNOLOGIES Zoom on battery technologies with a lower numbers of filings

A patent family is a set of patent applications filed in multiple countries to protect a single invention by a common inventor(s). A first patent application is filed in one country – the priority country – and is then extended to other countries. Source: Patent search was done in December 2025 by KnowMade, using keywords and IPC/CPCs H01M, H02J007) in Orbit Questel) which provides 100+ million patent documents from 100 patent offices USA, Japan, Europe, China, Korea, Taiwan, Hong Kong, Singapore, etc.).

Extracted from the PDF; charts and images may read imperfectly.