Figure 6

Year versus ‘hit’ patent probability. (a)-(f) show the probability that a patent is in top 5th percentile by citations among the grant year cohort. Patents are partitioned into three categories by the top and the bottom quartile, and in between, with (a) \(z_{\mathrm{med}}\), (b) \(z_{\mathrm{min}}\), and (c) Δz. (a)-(c) are for classes. (d)-(f) are for subclasses.