Fig. 2: Patent filing trends and key events for sturgeon and pangolin.

Patent filing trends for pangolin and sturgeon alongside key events related to those taxa. Patent filings per month (blue, actual values and smoothed average shown); and probability of changepoint (orange) for patenting of sturgeon (top) and pangolin (bottom) between 1970 and 2020, showing key regulatory and nonregulatory events relevant to these taxa that occurred during this period. Silhouettes are public domain, from https://www.phylopic.org/.