Legal

Overview of 2025 Patent Activity: Zn-ion Batteries

Emerging patenting activity is dominated by applications in China and Chinese R&D labs. The top 3 2025 applicants Dalian Institute of Chemical Physics, Anhui University, Central South University) hold 7% of patent families. KIER is the sole non-chinese R&D labs among main patent applicants.

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.