Ryan Whalen et al on The institutional dynamics of inequality for women inventors who break with conventional thinking (PNAS)

"The institutional dynamics of inequality for women inventors who break with conventional thinking"
Tara Sowrirajan, Ryan Whalen, and Brian Uzzi
Proceedings of the National Academy of Sciences (PNAS)
Published online: April 2026

Significance: The gender innovation gap—where women’s inventions are less likely to be patented or pursued—raises concerns about its potential to slow scientific progress. Our analysis of millions of patent applications reveals that the gender gap in patenting is not uniform across conventional and unconventional patents. Rather, it manifests for women inventors who attempt to patent unconventional inventions—innovations that combine knowledge in unfamiliar ways. We find the USPTO’s practices overassign women inventors to women examiners who are relatively inexperienced and more likely to reject unconventional inventions due to their inexperience, not due to gender stereotypes. By identifying these institutional barriers, we propose that organizational policies can complement gender bias explanations and may more immediately address the gender innovation gap.

Abstract: Though women comprise a growing share of the scientific workforce, the gender innovation gap in patenting between men and women inventors persists, potentially limiting innovation output and equity. We study millions of scientific and technological innovations and find that the innovation gap faced by women is not universal. No gap exists for highly conventional innovations, which combine ideas in familiar ways. Rather, it exists when women inventors attempt to patent unconventional inventions, which combine ideas in surprising ways and drive scientific advancements. Our data suggest that rather than deliberate bias, a confluence of institutional practices lower women inventor’s chances of patenting unconventional innovations. We find that women examiners relative to men have less of the on-the-job experience needed to appraise unconventional innovations. Additionally, women examiners are overassigned to women applicants, reducing their odds of successfully patenting unconventional inventions. Lastly, traditional explanations weakly account for this innovation gap because men examiners grant comparably more unconventional innovations to women inventors than do women examiners. These institutional barriers reveal new factors that slow innovation, but at the same time can be more directly addressed than deeply rooted gender norms.