The main purpose of this chapter is to study gender inequality within the inventive activities in three emerging countries – Brazil, India, and Mexico – using the framework of knowledge economics. It aims to determine which factors that influence a growing propensity of women to be inventors help reduce gender inequality in knowledge economies. In addition, the chapter contributes policy proposals that aim at increasing female participation in inventive activities. The key questions for this research are as follows: What are the characteristics and dynamics of female inventive activities in emerging countries with different economic development paths? What factors influence women’s propensity to invent? Based on the results of the econometric model proposed in this chapter, the inventive variables, such as the stock of prior knowledge, the size of inventor teams, the type of patent holder, technological field, and the presence of foreign researchers – positively influence women’s propensity to become inventors in a differentiated manner in each country. These findings validate how some variables could influence the inclusion of a greater number of women in research teams and the deployment of their potential inventive activities. The chapter proposes policies aimed at reducing gender inequality in the knowledge economy.