Venture capital investment in Al by country and region, 2016-2025 Source: IEA analysis based on data from OECD (2026), OECD.Al Policy Navigator. The number of Al-related patents is another powerful proxy to track Al trends. In both Korea and Japan, steady growth is being seen in the number of patent but they then continued to increase and reached over 10 000 applications in 2022. Between 2015 and 2022, the number of Al-related patent applications grew at a compound annual growth rate (CAGR) of 46% in Korea and 29% in Japan. Meanwhile, as of 2023 China was the country owning the most Al-related patents granted worldwide, accounting for 69.7% of the global total.