As of May 27, from the perspective of technical sources (patent applicants), Japan is still the world's largest country in the field of solid-state battery patent applications, accounting for nearly 40% of the global patent applications, China ranked second, accounting for about 26.6%. However, from the perspective of the layout market (where patent applications are located), China is the world's largest market for solid-state battery patent layout, accounting for about 31.4%. Japan followed with about 27 percent.