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1.
This study investigates empirically whether patents can be signals to financial markets, thus reducing problems of asymmetric information. In particular we study how patenting behaviour impacts on the way investors perceive software firms’ growth potential through an increase in the amount invested at the initial public offering (IPO) of firms in the US and Europe. This study performs regressions on the relationship of patent applications before IPO and the amount of money collected at the IPO, while controlling other factors that may influence IPO performance. We also attempt to account for a potential source of endogeneity problems that can arise for self-selection bias and simultaneity between the number of patent applications prior to going public and the amount of money collected at IPO. We find significant and robust positive correlations between patent applications and IPO performance. The signalling power of patenting is significantly different for US and European companies, and is related to the difficulty in obtaining a signal and its scarcity. An additional patent application prior to IPO increases IPO proceeds by about 0.507% and 1.13% for US and European companies, respectively. Results suggest that a less ‘applicant friendly’ patenting system increases the credibility of patents as signals and their value for IPO investors. 相似文献
2.
Darshak PatelMichael R. Ward 《Research Policy》2011,40(6):886-894
We propose an empirical strategy to estimate competition in innovation markets. Our method relates firms’ market return on equity to information about patent citation patterns. Two innovations are implemented in the methodology. First is the application of daily abnormal stock returns rather than annual measures of Tobin's q. Second is the creation of citation patterns related to the area of science a firm patents in as represented by the detailed patent classification system. We find that markets positively reward firms when patents are granted. We further find that firm's market value increases when its patent portfolio is cited. We find evidence of competition in innovation markets. The market reacts at the time that the citation occurs and does not anticipate future citations at the time of patenting. Holding this effect constant, we find that citations from patents in the same area of science tend to reduce market value. We interpret these findings as consistent with more citations indicating more valuable intellectual property but citations from competing technologies decreasing it. 相似文献
3.
This paper uses patent citation data to analyze the quality of university technology across European regions. The empirical analysis draws on a panel dataset of 4580 European university-owned patents classified by 202 European regions over the period 1998-2004. The methodology involves a multilevel framework to identify the effects of factors at three hierarchical levels (individual, university, and regional) on the quality of university patenting. The results suggest that regional factors, such as the level of development, industrial potential, and regional higher education R&D expenditure, do not play any significant role in determining the quality of European university patents. We instead find that the factors affecting patent quality stem from their specific characteristics. We also find that university size does not explain the quality of patents. However, there is significant unobserved heterogeneity at the university level in all models, suggesting that differences in other university characteristics explain a substantial part of the variance in patent quality. 相似文献
4.
Prior art patent citations have become a popular measure of patent quality and knowledge flow between firms. Interpreting these measurements is complicated, in some cases, because prior art citations are added by patent examiners as well as by patent applicants. The U.S. Patent and Trademark Office (USPTO) adopted new reporting procedures in 2001, making it possible to measure examiner and applicant citations separately for the first time. We analyzed prior art citations listed in all U.S. patents granted in 2001-2003, and found that examiners played a significant role in identifying prior art, adding 63% of citations on the average patent, and all citations on 40% of patents granted. An analysis of variance found that firm-specific variables explain most of the variation in examiner-citation shares. Using multivariate regression, we found that foreign applicants to the USPTO had the highest proportion of citations added by examiners. High-volume patent applicants had a greater proportion of examiner citations, and a substantial number of firms won patents without listing a single applicant citation. In terms of technology, we found higher examiner shares among patents in electronics, communications, and computer-related fields. Taken together, our findings suggest that firm-level patenting practices, particularly among high-volume applicants, have a strong influence on citation data and merit additional research. 相似文献
5.
In the presence of asymmetric information, economic agents need to communicate their quality to investors and other parties. This paper investigates how information generated during the patenting process affects the ability of new ventures to attract VC financing. While much of the literature on information asymmetries focuses on patent applications, we argue that the entire examination process should be considered, including information that emerges in the course of patent examination and review. We test several hypotheses using a sample of British and German companies that seek venture capital. We find that the filing of patent applications is positively related to VC financing. Moreover, the examination process at the patent office generates valuable technological and commercial information via search reports, citations and opposition procedures which affect the likelihood of VC financing. Our results suggest that the patenting process supports investors in updating their expectations regarding the quality of new ventures. 相似文献
6.
Academic inventors as brokers 总被引：4，自引：0，他引：4
Francesco Lissoni 《Research Policy》2010,39(7):843-857
Academic inventors are university scientists who appear as designated inventors of patents owned either by business companies, academic institutions or individuals. We analyse their relationships with co-inventors, who may be either academic colleagues, students, or, very often, industrial researchers. Gould and Fernandez's (1989) taxonomy of ‘brokerage’ roles is adjusted to patent data, and complemented with information drawn from both academic inventors’ publications and replies to a short questionnaire. Only very few academic inventors are found to hold brokerage positions. Such inventors have a large number of patents, a strong publication record and a higher-than-average share of patents held by companies, rather than universities. Relationships of academic inventors with co-inventors from industry are weaker and less likely to be maintained than those with co-inventors from academia. Academic inventors in gatekeeping positions (between university and industry) maintain the strongest ties with all types of co-inventors. 相似文献
7.
The value of U.S. patents by owner and patent characteristics 总被引：1，自引：0，他引：1
James Bessen 《Research Policy》2008,37(5):932-945
This paper uses renewal data to estimate the value of U.S. patents, controlling for patent and owner characteristics. Estimates of U.S. patent value are substantially larger than estimates for European patents, however, the ratio of U.S. patent value to R&D for firms is only about 3%. Contrary to a common assertion, patents issued to small patentees are much less valuable than those issued to large corporations. Litigated patents are more valuable, as are highly cited patents. However, patent citations explain little variance in value, suggesting limits to their use as a measure of patent quality. 相似文献
8.
Nicola Baldini 《Research Policy》2006,35(4):518-532
This paper focuses on Italian universities’ patenting activities between 1965 and 2002 and on the way they were affected by internal IPR regulations, set as part of broader responses to the increased level of autonomy granted to universities during the 1990s. Our analyses are based on a unique dataset including detailed information on all patents filed by Italian universities and university-level characteristics. Results show that: (1) in the last 10 years, the number of Italian university patents rose substantially; (2) patenting activities almost tripled in universities with an internal IPR regulation, after controlling for several universities’ characteristics, previous patenting activity and time trends; (3) each time a university creates its own patent regulation, there is a 9% increase in the likelihood that universities without any internal patent regulation will adopt one. Implications for university technology transfer policies are discussed. 相似文献
9.
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
10.
Christine Greenhalgh 《Research Policy》2006,35(4):562-580
This paper analyses market valuations of UK companies using a new data set of their R&D and IP activities (1989-2002). In contrast to previous studies, the analysis is conducted at the sectoral-level, where the sectors are based on the technological classification originating from Pavitt [Pavitt, K., 1984. Sectoral patterns of technical change. Research Policy 13, 343-373]. The first main result is that the valuation of R&D varies substantially across these sectors. Another important result is that, on average, firms that receive only UK patents tend to have no significant market premium. In direct contrast, patenting through the European Patent Office does raise market value, as does the registration of trade marks in the UK for most sectors. To explore these variations the paper links competitive conditions with the market valuation of innovation. Using profit persistence as a measure of competitive pressure, we find that the sectors that are the most competitive have the lowest market valuation of R&D. Furthermore, within the most competitive sector (‘science based’ manufacturing), firms with larger market shares (an inverse indicator of competitive pressure) also have higher R&D valuations, as well as some positive return to UK patents. We conclude that this evidence supports Schumpeter by finding higher returns to innovation in less than fully competitive markets and contradicts Arrow [Arrow, K., 1962. Economic welfare and the allocation of resources for invention. In: Nelson, R. (Ed.), The Rate and Direction of Inventive Activity. Princeton University Press, Princeton], who argued that, with the existence of IP rights, competitive market structure provides higher incentives to innovate. 相似文献
11.
12.
Sandro Mendonça 《Research Policy》2009,38(3):470-482
‘Lower-tech’ sectors are still commonly regarded as unusual suspects in the modern process of innovation and economic change. In this paper we try to understand better how organisations specialising in traditional businesses have been transformed by a period of paradigm-shift such as the one that characterised the final decades of the twentieth century. We focus on a population of nearly 500 of the world's largest innovative companies to assess the extent to which companies belonging to ‘old-economy’ sectors have been developing cutting-edge knowledge about clusters of new technologies such as ICT, new materials and biotechnology. We find that ‘non-high-tech’ corporations transformed their patent portfolios in a non-trivial way. Companies in mature trades contributed significantly to the development of technologies that are at the core of the so-called Third Industrial Revolution. 相似文献
13.
Does it matter where patent citations come from? Inventor vs. examiner citations in European patents
Paola Criscuolo 《Research Policy》2008,37(10):1892-1908
This paper addresses the question of whether patent citations are useful indicators of technology flows. We exploit the distinction between citations added by inventors and patent examiners. We use information from the search reports of European Patent Office patent examiners to construct our dataset of patenting activity in Europe and the US, and apply various econometric models to investigate what determines the probability that a citation is added by the inventor rather than the examiner. Contrary to previous work which uses US Patent and Trademark Office data, we find that geographical distance is a factor that strongly diminishes the probability of knowledge flows. We find other significant effects of such factors as cognitive distance, time and strategic factors on citing behaviour. 相似文献
14.
Motives to patent: Empirical evidence from Germany 总被引：4，自引：0，他引：4
Against the background of the patent upsurge, we first analyse the role of patenting and alternative instruments to protect intellectual property, based on a sample of German companies active in patenting. In a second step, we investigate the motives to patent, considering sector and company size effects. We find that company size matters, both for the importance of instruments and the motives to patent. Especially important are the new strategic motives to patent, like using patents to improve a company's own position in negotiations with partners, licensees and the financial sector, or to use patents as incentives for R&D personnel or performance indicators—these correlate positively with company size. We derive some possible challenges for future patent policies from these insights. 相似文献
15.
A new comprehensive patent database based on patent applications filed with the Japanese Patent Office is described. We present the methodology for the construction of this database, the IIP Patent Database, its basic features and we discuss the recent history of patenting in Japan. We also compare citing-cited patterns of Japanese patents in this database with the citing-cited patterns for the same patents registered in the US, using OECD patent family information to identify US counterparts. We found similar patterns in the two countries, although citation is provided by patent examiners in Japan, while in the US a large share of citations is made by inventors. 相似文献
16.
This paper examines the intertemporal returns of patented inventions using estimates of patent value obtained from German employee inventors’ compensation records. The paper finds heterogeneity in the mean age and dispersion of the annual returns by technology and cumulative patent value. While the returns earned by most patents dissipate rapidly, high valued patents tend to receive significant returns through the latter part of the patent term. These high valued patents which account for the vast majority of the realized returns, further can be identified based on past returns, relatively early in the patent term. These findings suggest that while shortening the length of the patent term could substantially reduce realized returns, graduated maintenance fees may not adversely affect returns, as firms would be able to identify and selectively renew the subset of high valued patents. 相似文献
17.
We examine patent licensing business models of non-practicing entities that generate revenue by selling, licensing, or litigating patents. They may also pursue R&D activities, invent new technologies, or provide services to inventors or product companies. We describe their business models and patent market behavior and then compare their litigation strategies against product companies using a matched sample of highly comparable patents. The main differences among patent licensing firms stem from their technological capabilities, patent portfolio sizes, and external relationships. We find that licensing firms with technological capabilities often pursue litigation until decision and engage in forum shopping. In contrast, litigation incidence, parties involved, and outcomes are primarily determined by patent characteristics, not entity types. Licensing business models drive the acquisition of certain types of patents that influence the outcomes of the patent system. We argue that patent policy should strengthen mechanisms to discover invention quality rather than focus on the amount of litigation or types of entities. 相似文献
18.
Carlos Rosell 《Research Policy》2009,38(1):1-13
The rate of university patenting increased dramatically during the 1980s. Did the manner in which knowledge embedded in university patents was managed change during this period of rapid patenting growth? Using a Herfindahl-type measure of knowledge flow concentration and employing a difference-in-differences estimation to compare university-to-firm patent citations across two time periods, we find that the university diffusion premium (the degree to which university knowledge outflows are more widely distributed than those of firms) declined by more than half during the 1980s. In addition, we find that the university diversity premium (the degree to which knowledge inflows used by universities are drawn from a more widely distributed set of prior art holders than those used by firms) also declined by more than half. However, these changes are mostly limited to a narrow set of technology fields (i.e., biotechnology and pharmaceuticals in the outflows case and sub-fields of electronics in the inflows case). The social welfare implications are ambiguous. 相似文献
19.
Implementing Bayh-Dole-like laws: Faculty problems and their impact on university patenting activity 总被引：1，自引：0，他引：1
Nicola Baldini 《Research Policy》2009,38(8):1217-1224
The implementation of a Bayh-Dole-like legislation outside the US is still a major concern that needs to be addressed. I fill this gap in two ways. First, I report the results of a faculty survey on obstacles to patenting activity in Italian universities, targeted both to inventors and to those non-inventors which reported to engage in university patenting activity and to give up before any patents could be filed. Second, I investigate their effect in a regression model using universities’ patent counts as the dependent variable. Results show that obstacles to university patenting activity reduce to four dimensions: lack of support mechanisms (including insufficient reward for researchers, lack of a TTO, lack of funds to cover patenting costs), commercialisation problems, too heavy teaching and administrative duties, and personal/cultural problems (related to the scarce knowledge of institutional-level patent regulations and to the “open science” mentality of the university). Among them, however, only the lack of support by the university administration reduces the patent counts. Publication productivity has an inverted U-shaped relation with patent counts, but the overall effect is still largely positive, given the current publication levels. 相似文献
20.
主流研究认为专利放弃是专利质量低导致的“被动”技术投资失败,但实践中专利放弃有时是企业“主动”修剪专利组合的理性结果。二者矛盾,是因为研究者的视角局限在专利个体质量,而企业着眼于专利组合及长期战略目标。从企业战略的角度出发,借鉴实物期权理论,试图通过分析内外部环境的不确定性对专利放弃行为的影响,揭示企业处置专利时隐含的期权逻辑。研究通过对1992-2017年2380家A股上市企业面板数据进行实证分析发现,外生不确定性和内生不确定性会抑制企业的专利放弃行为,同时在企业专利组合多样化程度更高时不确定性对专利放弃的抑制作用更强,意味着多样化的专利组合对应对不确定性的作用更强。研究结果补充了传统研究中专利维持取决于专利质量这一观点的一元性,指出专利作为一种实物期权资产,其决策同时受到环境和专利组合层面特征的共同影响。 相似文献