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The puzzle of patent value indicators
Zeebroeck, Nicolas van - In: Economics of Innovation and New Technology 20 (2011) 1, pp. 33-62
, families, renewals, and oppositions) that (1) have been found positively correlated with the value of patents in the literature … market for the patented invention and the approach uses five different patent features (forward citations, grant decisions …
Persistent link: https://www.econbiz.de/10009205342
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Long Live Patents: the Increasing Life Expectancy of Patent Applications and its Determinants
van Zeebroeck, Nicolas - In: Review of Economics and Institutions 2 (2011) 3
Relying on a comprehensive dataset including detailed information on all patent applications filed to the EPO from 1980 to 2000 and on the renewal of those of them that were granted, this paper presents the first survival time analysis of the determinants of patent length. The results are...
Persistent link: https://www.econbiz.de/10009320623
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Long live patents: the increasing life expectancy of patent applications and its determinants
van Zeebroeck, Nicolas - Solvay Brussels School of Economics and Management, … - 2011
Relying on a comprehensive dataset including detailed information on all patent applications filed to the EPO from 1980 to 2000 and on the renewal of those of them that were granted, this paper presents the first survival time analysis of the determinants of patent length. The results are...
Persistent link: https://www.econbiz.de/10009277306
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Filing strategies and the increasing duration of patent applications
van Zeebroeck, Nicolas - Centre Emile Bernheim, Solvay Brussels School of … - 2009
It has long been implicitly assumed that the roaring backlogs experienced by most patent offices around the world – and harshly criticized by many patentees – are a mere mechanical consequence of surging numbers of patent filings. However, different voices suggest that the patent system may...
Persistent link: https://www.econbiz.de/10005558885
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Patents only live twice: a patent survival analysis in Europe
van Zeebroeck, Nicolas - Centre Emile Bernheim, Solvay Brussels School of … - 2007
The length of patent rights is an issue of considerable importance in the design of patent systems, and its optimality has been intensively discussed in the literature. This dimension – taking the form of the number of years during which a given patent has been maintained – has been...
Persistent link: https://www.econbiz.de/10005558901
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From patent renewals to applications survival: do portfolio management strategies play a role in patent length?
van Zeebroeck, Nicolas - Centre Emile Bernheim, Solvay Brussels School of … - 2009
proxies (families, claims, IPC classes and forward citations) constitute strong predictors of the entire length of patent … building large portfolios or families to protect their inventions make them less selective in their renewal decisions. Finally …
Persistent link: https://www.econbiz.de/10005024327
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Filing Strategies and Patent Value
van Pottelsberghe de la Potterie, Bruno; van Zeebroeck, … - C.E.P.R. Discussion Papers - 2008
This paper aims at contributing to the literature on the determinants of patent value. First, it puts forward a new potential class of value determinants in the form of filing strategies (encompassing filing routes and drafting styles). Second, it provides empirical evidence suggesting that...
Persistent link: https://www.econbiz.de/10005791370
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Filing strategies and patent value
van Pottelsberghe de la Potterie, Bruno; van Zeebroeck, … - Centre Emile Bernheim, Solvay Brussels School of … - 2008
This paper aims at contributing to the literature on the determinants of patent value. First, it puts forward a new potential class of value determinants in the form of filing strategies (encompassing filing routes and drafting styles). Second, it provides empirical evidence suggesting that...
Persistent link: https://www.econbiz.de/10005357846
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The market value of blocking patent citations
Czarnitzki, Dirk; Hussinger, Katrin; Leten, Bart - Zentrum für Europäische Wirtschaftsforschung (ZEW) - 2011
shown that patents and their quality as measured by citations received by future patents contribute significantly to the … forward citations patents can receive at the European Patent Office. While a patent can be cited as non-infringing state of … the art, it can also be cited because it threatens the novelty of patent applications ('blocking citations'). Empirical …
Persistent link: https://www.econbiz.de/10009003575
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The market value of blocking patent citations
Czarnitzki, Dirk; Hussinger, Katrin; Leten, Bart - 2011
shown that patents and their quality as measured by citations received by future patents contribute significantly to the … forward citations patents can receive at the European Patent Office. While a patent can be cited as non-infringing state of … the art, it can also be cited because it threatens the novelty of patent applications ('blocking citations'). Empirical …
Persistent link: https://www.econbiz.de/10010304459