Manuel Trajtenberg

TL;DR: In this paper, the authors compare the geographic location of patent citations to those of cited patents, as evidence of the extent to which knowledge spillovers are geographically localized, and find that citations to U.S. patents are more likely to come from the U. S., and more likely than coming from the same state and SMSA as cited patents than one would expect based only on the preexisting concentration of related research activity.

TL;DR: Hall et al. as mentioned in this paper explored the usefulness of patent citations as a measure of the "importance" of a firm's patents, as indicated by the stock market valuation of the firm's intangible stock of knowledge.

TL;DR: In this paper, the authors put forward patent counts weighted by citations as indicators of the value of innovations, thereby overcoming the limitations of simple counts, and found that simple patent counts are highly correlated with contemporaneous RD, however, the association is within afield over time rather than cross-sectional.

TL;DR: In particular, significant changes over time in the rate of patenting and in the number of citations made, as well as the inevitable truncation of the data, make it very hard to use the raw number of citation received by different patents directly in a meaningful way.

TL;DR: In this article, a decentralized economy will have difficulty in fully exploiting the growth opportunities of GPT's: arms-length market transactions between the GPT and its users may result in "too little, too late" innovation.