century. In addition to the funding agency, the data report whether the government has title to the patent ("title" patents …) or funded a patent assigned to a private organization ("license" patents). The data include a large number of "license …" patents that cannot be linked to government funding from patent text or other sources. Combining the historical data with …

As patent data become more available in machine-readable form, an increasing number of researchers have begun to use … the economic meaning of these citation-based patent measures using the financial market valuation of the firms that own … measures of Tobin's Q for the firms. We find that citation-weighted patent stocks are more highly correlated with market value …

,786 public corporations, and measures of both patent quality and patent value, we find that, while average invention value rises …

We use textual analysis of high-dimensional data from patent documents to create new indicators of technological … innovation. We identify significant patents based on textual similarity of a given patent to previous and subsequent work: these … patents are distinct from previous work but are related to subsequent innovations. Our measure of patent significance is …

This paper looks more closely at the sources of patent growth in the United States since 1984. It confirms that the … surge), but not before, when patents were relatively unimportant in these industries. Also, the value of patent rights in …