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Long-lived small firms with a substantial, public record of innovative success are the focus of this paper. We label such firms “serial innovators” and argue that they are often specialist suppliers in markets for technology. To survive as specialist suppliers, firms must produce technology that is broadly tradable. Using Arora, Fosfuri and Gambardella's markets-for-technology framework, we hypothesize that such technology has certain characteristics. It is: high quality, general purpose, broadly based, quite basic, and concentrated in newer generations of technology. We find that serial innovators, survivors among the specialist technology suppliers, have mastered innovating in technology with these characteristics. This helps explain why these firms have become serious players in these markets—at least for a few years until a new generation of technology emerges. 相似文献
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选取上海市1989—2018年统计数据,运用回归分析模型和柯布—道格拉斯生产函数模型,分析各类专利对经济增长的影响。研究结果表明,上海专利授权对总体经济增长具有明显的促进作用；不同类型的专利对上海市经济增长影响存在差异；不同产业经济受不同类型专利的影响也存在较大差异。最后,根据研究结果提出相应的对策建议。 相似文献
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This paper extends the line of research attempting to link innovation to economic growth by addressing some unexplored questions. Using global patent data, this paper empirically investigates the importance of both the quantity and quality of innovation on economic growth, controlling for past measures of inventive inputs. Moreover, our research examines how innovation inputs can be translated into per capita growth under the various economic structures and stages of economic development. Based on a sample of 58 countries for the period 1980–2003, our empirical results indicate that countries hosting firms with higher quality patents also have higher economic growth. Furthermore, we have some evidence that those countries that increase the level of patenting also witness a concomitant increase in economic growth. 相似文献
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Assessing the contribution to innovation of private equity investors: A study on European buyouts 总被引：1，自引：0，他引：1
Elisa Ughetto 《Research Policy》2010,39(1):126-140
The paper provides an empirical analysis of the patenting activity of a sample of Western European manufacturing firms undergoing a buyout between 1998 and 2004. A panel data design is used to test whether the characteristics of the deal and of private equity (PE) firms can affect acquired companies’ subsequent innovation effort as measured by the number of patents granted by the EPO. Results support the view that the innovation activity of portfolio firms is affected by different types of investors, pursuing different objectives and differing in their risk propensity, expected returns and investment policies. The characteristics of lead investors (size, stage specialization, geographical location) and of the deal (amount invested, presence of multiple investors) are also investigated and are found to differently affect the post-buyout innovation activity of sample firms. 相似文献
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The past decade has witnessed a resurgence in innovation awards, in particular of grand innovation prizes (GIPs) which are rewards to innovators developing technologies reaching performance goals and requiring breakthrough solutions. GIPs typically do not preclude the winner also obtaining patent rights. This is in stark contrast with mainstream economics of innovation theories where prizes and patents are substitute ways to generate revenue and encourage innovation. Building on the management of innovation literature which stresses the difficulty to specify ex-ante all the technical features of the winning technologies, we develop a model in which innovative effort is multi-dimensional and only a subset of innovation tasks can be measured and contracted upon. We show that in this environment patent rights and cash rewards are complements, and that GIPs are often preferable to patent races or prizes requiring technologies to be placed in the public domain. Moreover, our model uncovers a tendency for patent races to encourage speed of discovery over quality of innovation, which can be corrected by GIPs. We explore robustness to endogenous entry, costly public funds, and incomplete information by GIP organizers on the surplus created by the technology. 相似文献
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Measuring innovative performance: is there an advantage in using multiple indicators? 总被引：10，自引：0，他引：10
The innovative performance of companies has been studied quite extensively and for a long period of time. However, the results of many studies have not yet led to a generally accepted indicator of innovative performance or a common set of indicators. So far the variety in terms of constructs, measurements, samples, industries and countries has been substantial. This paper studies the innovative performance of a large international sample of nearly 1200 companies in four high-tech industries, using a variety of indicators. These indicators range from R&D inputs, patent counts and patent citations to new product announcements. The study establishes that a composite construct based on these four indicators clearly catches a latent variable ‘innovative performance’. However, our findings also suggest that the statistical overlap between these indicators is that strong that future research might also consider using any of these indicators to measure the innovative performance of companies in high-tech industries. 相似文献
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Pere Arqué-Castells 《Research Policy》2012,41(5):897-912
Venture capitalists (VCs) fund the development of promising inventions to turn them into marketable innovations. During this development stage portfolio firms are likely to garner even more inventions at least until the product is fully developed. Once the product is fully developed the focus shifts from development to sales so the number of generated inventions should decrease. This behavior implies that VCs are likely to spur invention according to an inverted U-shape over time. We empirically examine whether patent trajectories are consistent with this hypothesized inverted U-shape using a self-collected dataset containing 233 VC-backed firms and a large set of controls operating in Spain. We find that firms’ patenting activity increases after VC investments. This increase is substantially more pronounced the first two years following VC investments, i.e., patent trajectories follow an inverted U-shape over time. Our more demanding specifications suggest that the sharp increase in patenting right after VCs’ investments is caused by a positive treatment effect over and beyond any likely selection effect. Moreover, we defend that the increase in patenting is not just due to the fact that VCs give money so that firms can patent pre-VC inventions, but also to the fact that VCs fund the development of inventions. 相似文献
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Patent data have been widely used in research to characterize firms’ locations in technological or knowledge space, as well as the proximities among firms. Researchers have measured firms’ technological or knowledge proximities with a variety of measures based on patent data, including Euclidean distances (using the technological classifications listed on patents), and overlap in cited patents. Often research has employed only the first listed patent classification in measures of proximities. We explore the effects of using the first listed patent class as well as other methods to measure proximities. We point out that measures of proximity based on small numbers of patents are imprecisely measured random variables. Measures computed on samples with few patents or a single patent class generate both biased and imprecise measures of proximity. We discuss the implications of this for typical research questions employing measures of proximity, and explore the effects of larger sample sizes and coarser patent class breakdowns in mitigating these problems. Where possible, we suggest that researchers increase their sample sizes by aggregating years or using all of the listed patent classes on a patent, rather than just the first. 相似文献
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Technological dynamism in Asia 总被引：1，自引：0，他引：1
We analyze innovation in emerging and newly industrialized economies over the past 30 years, with the emphasis being on Asian economies. We use US patent data to study how the innovative capabilities of Taiwan, South Korea, Hong Kong and Singapore have expanded in relation to emerging economies in Asia and Latin America. We then carry out a sector-level analysis of innovation for South Korea, Taiwan, Singapore, Hong Kong, India and China. We also study the relative importance of foreign multinationals, business groups, individuals, domestic firms and research institutes in innovation. Finally, we study the overall concentration of innovative activity in Asian economies. 相似文献
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This paper discusses the results for Italy of a CDM model (Crepon et al., 1998) further extended with the objective of evaluating drivers and productivity effects of environmental innovations. The particular nature of environmental innovations, especially as regards the need of government intervention to create market opportunities, is likely to affect the way through which they are pursued (innovation equation within the CDM model) and their effect on productivity (productivity equation). 相似文献
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Guan-Cheng Li Ronald Lai Alexander D’Amour David M. Doolin Ye Sun Vetle I. Torvik Amy Z. Yu Lee Fleming 《Research Policy》2014
Research into invention, innovation policy, and technology strategy can greatly benefit from an accurate understanding of inventor careers. The United States Patent and Trademark Office does not provide unique inventor identifiers, however, making large-scale studies challenging. Many scholars of innovation have implemented ad-hoc disambiguation methods based on string similarity thresholds and string comparison matching; such methods have been shown to be vulnerable to a number of problems that can adversely affect research results. The authors address this issue contributing (1) an application of the Author-ity disambiguation approach (0170 and 0175) to the US utility patent database, (2) a new iterative blocking scheme that expands the match space of this algorithm while maintaining scalability, (3) a public posting of the algorithm and code, and (4) a public posting of the results of the algorithm in the form of a database of inventors and their associated patents. The paper provides an overview of the disambiguation method, assesses its accuracy, and calculates network measures based on co-authorship and collaboration variables. It illustrates the potential for large-scale innovation studies across time and space with visualizations of inventor mobility across the United States. The complete input and results data from the original disambiguation are available at (http://dvn.iq.harvard.edu/dvn/dv/patent); revised data described here are at (http://funglab.berkeley.edu/pub/disamb_no_postpolishing.csv); original and revised code is available at (https://github.com/funginstitute/disambiguator); visualizations of inventor mobility are at (http://funglab.berkeley.edu/mobility/). 相似文献
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《Research Policy》2023,52(9):104854
How patents affect follow-on innovation is a key question for the patent system. We disaggregate follow-on innovation into activities that infringe patents and others that do not infringe but can be indirectly affected by patents. Replicating an important study using our disaggregated measure, we find that 87 percent of follow-on scientific publications describing patented genes do not constitute patent infringement. Supplementing our empirical strategy with data on patent expiration dates, we find that gene patents which are not close to expiration cause an increase in noninfringing follow-on research, but the effect disappears for patents close to expiration. Our nuanced measure helps better identify the mechanisms of patents’ effect, reconcile disparate results in the literature, and evaluate policy reform. 相似文献