Analysis of patent mortality rate across different technology fields in India.

The aim of this study was to evaluate how indicators of patent quality affect the value of a patent, which can be measured by how often it is renewed (or "survives"). Intellectual property rights (IPRs) are becoming more important in a wide range of industries. In the same way, a country's intellectual strength can be judged by how many patents it has and how much research and development it does. The Cox-PH model and the accelerated failure time (AFT) model are used in this study to determine the patent's worth across the five major technology groups and ownership status. The final sample for survival analysis is made up of 40132 patents that were obtained from the Indian Patent Office between 1995 and 2005. (IPO). We find that broad academic patents don't last longer, but that the patent's ability to be used internationally makes it last longer. In contrast, institutional patents are geographically restricted. The collaboration appears to have a greater impact on patent value. [ABSTRACT FROM AUTHOR]