The book "Maintenance Time and the Industry Development of Patents" offers a comprehensive analysis of patent maintenance times in various countries, including China, the USA, Germany, France, Japan, and South Korea. It addresses key topics such as the capacity for technological innovation, which is influenced by patent maintenance times, as well as the distribution of patented technologies in the energy-efficient industry and the patent protection of traditional Chinese medicine. Furthermore, it examines the impact of these factors on the research and development industry in China. The work presents theoretical perspectives on promoting technological innovations through the patent system and proposes reforms to the annual fee model to optimize patent maintenance times. The materials included are based on original and innovative contributions that focus on empirical data and scientific analyses.