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Nicolas van Zeebroeck Bruno van Pottelsberghe de la Potterie Dominique Guellec 《Research Policy》2009,38(6):1006-1020
The size of patent applications has doubled over the past two decades, resulting in a dramatic surge in the workload of patent offices all over the world and serious concerns over patent quality standards. The current paper investigates the sources of this inflation in claims and pages for EPO applications. Four hypotheses are quantitatively examined: the diffusion of national drafting practices, the complexity of research activities, the emergence of new sectors, and filing strategies. The results validate the four hypotheses. They reveal major differences across countries in patent drafting styles, especially between Civil and Common Law countries, the latter being characterized by much larger patents. Second, the success of the PCT route is leading to the harmonizing of drafting styles worldwide on the US model. This paper therefore challenges the commonly accepted idea that more claims reflect a broader scope of protection by showing that the size of patents is partly due to institutional changes in the system. 相似文献
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The value of patented innovations has attracted substantial research attention, especially in the context of patent renewal. However, research often assumes that a firm's patented innovations are independent from each other. We draw upon evolutionary economics and suggest that some of a firm's patents share important genealogical relationships, which we refer to as internal sequential innovations. We propose internal sequential innovations are more valuable and therefore more likely to be renewed than stand-alone innovations. We examine our hypotheses from a dataset of US pharmaceutical and biotechnology patents. The results confirm our hypotheses at both the patent and the firm levels. 相似文献
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The valuation of patents is an important, albeit challenging task. Extant research to identify patent value indicators has so far relied on expert estimates of patent value, exploited patent renewal data, or depended on more indirect measures of patent value. Recently, specialized market places for patent transactions have emerged that allow us for the first time to directly observe patent's private value. One of the most prominent market places for patents is Ocean Tomo, a platform that offers periodical patent auctions. We make use of this auction data to empirically test predictions on patent value identifiers on real-world auction prices. We find empirical support for forward citations and the patent's family size; however, both indicators explain only a small variance in patent value. In contrast, our full model explains a large share of variance, making us optimistic that with increased directly observed patent value, such models can be useful tools in patent valuation. 相似文献
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专利价值再认识:大学专利转让的实证研究 《科学学研究》2022,40(9):1608-1620
高价值专利工作已经成为我国经济社会发展的一个重要方面,合理认识、科学评价专利价值是开展相关工作的重要前提和手段。从保护范围、创新水平、主体特征、时间因素等方面系统回顾、梳理了有关专利价值的客观指标。利用手动收集的1704项大学转让专利,用转让价格测量价值,实证分析了相关指标对专利价值的影响,发现专利价值是内生的。整体上,权利要求数、专利文献页数、海外同族专利数、独立权利要求字数、专利寿命对专利价值有显著的影响,发明人数量、专利审查时间、专利引用信息、是否与企业合作没有表现出与专利价值的显著相关性。分别以5万元、10万元、15万元为临界值进行逻辑回归发现,真正高价值的专利不仅具有法律意义上的高质量,技术上的高水平是其高价值的重要基础。 相似文献
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[研究目的]美国临时专利申请制度类似于本国优先权制度,已经实施了二十余年,它的存在是否有助于促进发明创造,提高专利质量?若是,则对我国完善知识产权保护,提高专利申请质量,建设知识产权强国具有重要借鉴意义。[研究方法]使用美国USPTO专利数据库,首先考察美国临时专利申请案的特性,然后使用6个与专利质量相关的指标比较了主张临时专利申请案优先权的专利(PA)和未主张临时专利申请案优先权的专利(NPA)的质量差异,并运用Logistics模型分析哪一专利指标与PA的关联性最强。[研究结论]研究表明,2004-2018年间,美国临时专利申请案不但存在国别(地区)差异,而且技术领域也存在显著差异。PA和NPA在平均前引和后引次数、专利权利要求数量、专利家族规模以及审查持续时间方面存在显著差异,主张临时专利申请案优先权的专利确实具有更高的专利质量,且专利请求项数与PA的关联性最强。 相似文献
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分析中国医药领域专利知识吸收和扩散演化规律及知识吸收对知识扩散影响,有助于快速选择并吸收相关资源,为加大基础研究投入强度提供数据支撑,为科技资源整合策略提供支持。本文以2000—2014年美国专利商标局收录的中国医药领域2326件专利及其引用的43 822篇专利文献、35 573篇论文文献为研究对象,从专利知识吸收及知识扩散两个角度出发,采用多元方差分析、零膨胀负二项回归及多元线性回归进行多维度分析。结果表明：专利知识吸收逐年增加,但知识扩散并未形成稳定趋势;不同时间段内知识吸收及扩散各测度指标显著不同;专利文献知识吸收数量、质量及论文文献知识吸收质量均对专利知识扩散产生负向影响;吸收论文知识构件对专利知识扩散产生正向影响;吸收论文数量与知识扩散广度、强度负相关;吸收专利知识构件与知识扩散广度正相关,但与知识扩散强度与速度均无相关关系;专利及论文文献知识吸收新颖性对知识扩散广度、强度及速度均无影响。 相似文献
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《Research Policy》2023,52(4):104742
Despite their growing importance for firm innovation strategy and frequent appearance in U.S. patent policy debates, how continuing patent applications are used remains unclear. Turn-of-the-century reforms strongly limited opportunities to extend patent term and surprise competitors, but continuing applications have steadily risen since. We argue that they retain a subtle use, as applicants can file continuations to keep prosecution open and change patent scope after locking in gains with the initial patent. We document a sharp drop in parent abandonment and rise in continuations per original patent after the reforms. Continuing applications are more privately valuable than original patents, are filed in more uncertain contexts, for higher value technologies, by more strategic applicants, and react strongly to the notice of allowance. The evidence supports a current strategic use of continuing applications to craft claims over time. 相似文献
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The number of patent documents is currently rising rapidly worldwide, creating the need for an automatic categorization system to replace time-consuming and labor-intensive manual categorization. Because accurate patent classification is crucial to search for relevant existing patents in a certain field, patent categorization is a very important and useful field. As patent documents are structural documents with their own characteristics distinguished from general documents, these unique traits should be considered in the patent categorization process. In this paper, we categorize Japanese patent documents automatically, focusing on their characteristics: patents are structured by claims, purposes, effects, embodiments of the invention, and so on. We propose a patent document categorization method that uses the k-NN (k-Nearest Neighbour) approach. In order to retrieve similar documents from a training document set, some specific components to denote the so-called semantic elements, such as claim, purpose, and application field, are compared instead of the whole texts. Because those specific components are identified by various user-defined tags, first all of the components are clustered into several semantic elements. Such semantically clustered structural components are the basic features of patent categorization. We can achieve a 74% improvement of categorization performance over a baseline system that does not use the structural information of the patent. 相似文献
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《Research Policy》2023,52(6):104785
Drawing on the resource-based view of the firm, we examine the effect of technological competition over a patent on the firm's choice of patenting strategy. We claim that technological competition makes the traditional strategy of protecting focal innovations from imitation less likely and increases the likelihood of a play strategy — i.e. using patents to avoid the risk of hold-up by other patent owners, or as a bargaining chip in litigation and cross-licensing. However, we claim also that technological competition over a target close to the firm's core technology should lead to use of a fence strategy i.e. to blocking the commercial endeavors of rivals and preempting substitute inventions. We find support for our hypotheses using data from a large-scale survey of European patent applications. 相似文献
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Cheaper patents 总被引：1，自引：0，他引：1
Tom Nicholas 《Research Policy》2011,40(2):325-339
The 1883 Patents Act in Britain provides perspective for modern patent policy reforms because it radically changed incentives for inventors by reducing filing fees by 84 percent. Patents increased 2.5-fold after the reform, which was evenly distributed across the geography of inventors, the organization of invention and sectors. By realizing a large demand for cheaper patents the reform increased the propensity to patent and shifted inventive activity inside the patent system. It did not increase innovation as measured by changes in the distribution of high and low value patents and citations to English inventor patents in the United States. 相似文献
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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
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基于专利网络的技术演进研究方法探索 《科学学研究》2013,(5):651-0
技术演进研究可用于梳理技术领域的发展脉络和内部技术活动的发展历史及现状,对政府和企业的科技战略管理具有重要意义。专利引文分析在技术演进研究中存在难以准确判断专利的技术主题相似度、分析的范围和潜在信息的丰富性有限等缺陷,而文本挖掘方法可以对专利的文本内容进行深度分析,能在一定程度上弥补专利引文分析的缺陷,因此探索将专利引文分析与文本挖掘方法相结合,在专利引用关系矩阵和专利文本相似度矩阵的基础上创建C-T（Citation-Text）专利网络,并对C-T专利网络进行聚类分析和可视化展示来研究技术的演进过程,旨在进行技术演进研究方法的创新,丰富技术演进研究的方法体系。 相似文献
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《Information processing & management》2022,59(3):102908
With the implementation of the innovation-driven development strategy, increasing technical innovations are patented by the individuals or the companies. As a form of intellectual properties, the patent has attracted attention from individuals and companies. Although there are some researches on the economic function of patent, few quantitative researches discuss on whether patents can work on the company stock market. To discover the relations between the company patents and the stock market, we explore a method to analyze the influence of patent activity on the company stock market. We collect the patent data and the stock data of listed companies, from which patent and market activities are extracted. By the recursive discrete wavelet transform, the patent and market activities are decomposed into multi-scale wavelets. These wavelets are fed into a patent and market activity based stock market trend prediction model, in which the influences of patent activity are analyzed. We compare our model with the state-of-the-art model on 4 measurements for 3 manufacturing datasets. The experimental results show that the patent activities have positive effect on market trend prediction in about 30% manufacturing listed companies and that the measurements of Shanghai/Shenzhen Stock Exchange often outperform that of USA in years 2016–2019 for the manufacturing listed companies. 相似文献
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Hanno-G. Deyle 《Research Policy》2005,34(2):221-234
Numerous studies have been conducted in the past using patent statistics to explain and compare the innovative forces of districts, regions and countries. The usual method of calculating the regional distribution of patent counts - not only in Germany but in many countries all over the world - is to assign the patents to districts by inventors’ residential addresses. This is considered more appropriate than assigning the inventions by the address of the applying company which, in the case of larger firms’ headquarters, holdings or subsidiaries, can be very misleading in geographical terms. It is commonly agreed that this method, due to the streams of commuters, leads to an underestimation of the innovative activities in the agglomeration - an issue that has, to our knowledge, never been proven. In this paper we suggest two ways that may help to get a more realistic picture of the regional distribution of innovation activities in the future and even, with hindsight, for past data. 相似文献
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近年来专利权质押贷款业务量迅猛增长,商业银行在此类业务中需要解决的一大棘手问题就是如何筛选出优质专利来作为质押标的。本文以质押专利的质量内涵为切入点,构建包含法律维度、技术维度、企业维度的质量评价体系,并运用支持向量机算法来提升评价效率。同时,引入情景分析法得到质押专利的双情景估值,运用质量评价结果对评估价值进行修正。最后,选取案例企业RX公司的芯片专利作为研究案例,运用评估模型对芯片专利的质押价值进行评估,验证了该模型在质押专利价值评估中的适用性,为专利权质押价值评估提供了新思路。 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
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《Research Policy》2023,52(2):104670
Encouraging disclosure is important for the patent system, yet the technical information in patent applications is often inadequate. We use algorithms from computational linguistics to quantify the effectiveness of disclosure in patent applications. Relying on the expectation that universities have more ability and incentive to disclose their inventions than corporations, we analyze 64 linguistic measures of patent applications, and show that university patents are more readable by 0.4 SD of a synthetic measure of readability. Results are robust to controlling for non-disclosure-related invention heterogeneity. The linguistic metrics are evaluated by a panel of “expert” student engineers and further examined by USPTO 112(a) – lack of disclosure – rejection. The ability to quantify disclosure opens new research paths and potentially facilitates improvement of disclosure. 相似文献