We investigate the value creation or destruction associated with the introduction of software patents in the United …) firms around the time of important court decisions that impacted software patents, and the second analyzes the relationship … between firms' stock market value, the sector in which they operate, and their holdings of software patents. We conclude that …

;qualityquot;-weighted patents issued by the European Patent Office (EPO) and the US Patent and Trademark Office (USPTO). We find that Tobin's q is … citations, family size and the number of technical fields covered by the patent are modestly informative for value. Software … patents account for a rising share of total patents in the USPTO and EPO. Moreover, some scholars of innovation and …

presents estimates of the effect of patent protection on the depreciation rate. Results suggest that the yearly depreciation … averaging 8–9 per cent. Patent protection slows down the erosion of profits by about 1–2 percentage points …

's fairs between 1851 and 1915. Exhibition data show that the industry where an innovation is made is the single most important … patent. The discovery of the periodic table in 1869 offers an opportunity to test this idea. Exhibition data show that …

How do non-practicing entities ("Patent Trolls") impact innovation and technological progress? Although this question …", who exploit the patent system to extract rents and thereby hurt innovation. We employ unprecedented access to NPE …-derived patent and financial data, as well as a novel model that guides our data analysis. We find that NPEs acquire patents from …

We study the causal impact of patent invalidation on subsequent innovation and exit by the patent holder. The analysis … is based on patent litigation at the U.S. Court of Appeals for the Federal Circuit, and exploits the random allocation of … judges to control for endogeneity of the judicial decision. Invalidation causes the patent holder to reduce subsequent …

. Using administrative data on successful and unsuccessful patent applications submitted to the US Patent and Trademark Office …-on innovation …

quality, follow-on innovation. Winning a first patent boosts a startup's subsequent growth and innovation by facilitating ….S. Patent Office since 2001, we find that startups that win the patent “lottery” by drawing lenient examiners have, on average …, 55% higher employment growth and 80% higher sales growth five years later. Patent winners also pursue more, and higher …

Such institutions as patent systems cannot be well understood without an assessment of technological creativity in …. Accordingly, this paper offers an empirical comparison of patents in relation to the award of prizes for technological innovation … unpredictable, and was unrelated to such proxies for the productivity of the innovation as inventive capital or the commercial …