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Borders and distance in knowledge spillovers : dying over time or dying with age? ; evidence from patent citations

Li, Yao - 2009

This paper uses a gravity framework to investigate the effects of distance as well as subnational and national borders in knowledge spillovers. Drawing on the NBER Patent Citations Database, we examine patent citations data at metropolitan level within the U.S. and the 38 largest patent-cited...

Persistent link: https://www.econbiz.de/10003833339

To be financed or not ... : the role of patents for venture capital financing

Häussler, Carolin; Harhoff, Dietmar; Müller, Elisabeth - 2009

venture capital (VC) financing. We argue that investors are faced with considerable uncer-tainty and therefore rely on patents … British biotechnology companies we have identified all patents filed at the European Patent Office (EPO). Applying hazard rate … attention to patent quality, financing those ventures faster which later turn out to have high-quality patents. Patent …

Persistent link: https://www.econbiz.de/10003861082

Languages, fees and the international scope of patenting

Harhoff, Dietmar; Hoisl, Karin; Van Pottelsberghe de la … - 2009

patents granted by the EPO are estimated to increase by 29%. …

Persistent link: https://www.econbiz.de/10003861111

To be financed or not … : the role of patents for venture capital financing

Häussler, Carolin; Harhoff, Dietmar; Müller, Elisabeth - 2009

venture capital (VC) financing. We argue that investors are faced with considerable uncertainty and therefore rely on patents … British biotechnology companies we have identified all patents filed at the European Patent Office (EPO). Applying hazard rate … attention to patent quality, financing those ventures faster which later turn out to have high-quality patents. Patent …

Persistent link: https://www.econbiz.de/10003848824

Patent citations, university inventor patents, and survival in the German laser source industry (1960-2005)

Medrano, Luis F. - 2012

from the beginning of the industry until 2005. Innovation effort is approximated by the generation of high quality patents … in laser sources technology (IPC H01S) and by having patents with university inventors. Quality patents are defined as … those in the upper quartile of the strongly right-skewed distribution of forward citations. Having quality patents is …

Persistent link: https://www.econbiz.de/10009507834

Measuring knowledge spillovers using Belgian EPO and USPTO patent data

Plasmans, Joseph E. J.; Lukatch, Ruslan - 2001

in this sector and the relative time lag between the citing and cited patents. …

Persistent link: https://www.econbiz.de/10011398036

International technology diffusion of joint and cross-border patents

Chang, Chia-Lin; McAleer, Michael; Tang, Ju-Ting - 2015

, using a novel set of cross-border patents and joint patents as proxy variables for technology diffusion, in order to …

Persistent link: https://www.econbiz.de/10010532120

International knowledge flows and technological advance : the role of migration

Douglas, Kacey N. - In: IZA journal of migration : IZAJOM 4 (2015), pp. 1-16

This paper investigates whether knowledge flows from host to source country as a result of migration, alleviating the negative effects associated with outward migration. Using a fixed effects Poisson regression, patent citations are used as a proxy for knowledge flows and regressed on...

Persistent link: https://www.econbiz.de/10011334013

A model of patent trolls

Choi, Jay Pil; Gerlach, Heiko A. - 2015

This paper develops a model of patent trolls to understand various litigation strategies employed by nonpracticing entities (NPE). We show that when a NPE faces multiple potential infringers who use related technologies, it can gain a credible threat to litigate even when it has no such...

Persistent link: https://www.econbiz.de/10011344729

R&D, patenting and growth : the role of public policy

Westmore, Ben - 2013

– proxied by R&D expenditure and the number of new patents – across 19 OECD countries. The relationship between innovation …

Persistent link: https://www.econbiz.de/10009767751