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Exploring the tail of patented invention value distributions

Harhoff, Dietmar; Scherer, Frederic M.; Vopel, Katrin - 1997

We explore the tail of patented invention value distributions by using value estimates obtained directly from patent holders. The paper focuses on those full-term German patents of the application year 1977 which were held by West German and U.S. residents. The most valuable patents in our data...

Persistent link: https://www.econbiz.de/10011440960

Quantity or quality? : collaboration strategies in research and development and incentives to patent

Hottenrott, Hanna; Lopes-Bento, Cindy - 2012

more forward citations per patent indicating that joint R&D enhances patent quality. In light of literature on strategic … intellectual property, while exchange alliances drive "portfolio patenting", resulting in fewer forward citations. -- R …

Persistent link: https://www.econbiz.de/10009572477

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/10008937317

Citation frequency and the value of patented innovation

Harhoff, Dietmar; Narin, Francis; Scherer, Frederic M.; … - 1997

yielded a count of citations to those patents. Patents renewed to full term were significantly more valuable than patents …

Persistent link: https://www.econbiz.de/10011440946

“Wacky” patents meet economic indicators

Czarnitzki, Dirk; Hussinger, Katrin; Schneider, Cédric - 2011

distinguish between “wacky” patents and a control group of randomly drawn patents. Our findings show that forward citations are …

Persistent link: https://www.econbiz.de/10009159863

Corporate science in the patent system : an analysis of the semiconductor technology

Della Malva, Antonio; Hussinger, Katrin - 2010

Corporate scientific publications are often presented as a strategic means for firms to create prior art with the objective to prevent others from patenting related inventions. This presumes that corporate publications enter the pool of prior art which is relevant to judge the novelty of patent...

Persistent link: https://www.econbiz.de/10008759943

Attenuation bias when measuring inventive performance

Zwick, Thomas; Frosch, Katharina - 2016

Most previous results on determinants of inventive performance are biased because inventive performance is measured with error. This measurement error causes attenuation bias. More specifically, for example age and education as drivers of patenting success have biased coefficients and too high...

Persistent link: https://www.econbiz.de/10011433501

Dynamic optimal capital structure and technological change

Lööf, Hans - 2003

This paper incorporates the cost of adjustment between observed and optimal leverage in explaining the variation in firm's equity or bank-debt financing investments. Using a dynamic adjustment approach identifies the determinants to capital structure between different financial systems. In...

Persistent link: https://www.econbiz.de/10011448232

Is there a trade-off between academic research and faculty entrepreneurship? : evidence from U.S. NIH supported biomedical researchers

Czarnitzki, Dirk; Toole, Andrew A. - 2009

Is there a trade-off of scholarly research productivity when faculty members found or join for-profit firms? This paper offers an empirical examination of this question for a subpopulation of biomedical academic scientists who received research funding from the U.S. National Institutes of Health...

Persistent link: https://www.econbiz.de/10003835125

The impact of informational costs in quantity regulation of pollutants : the case of the European Emissions Trading Scheme

Heindl, Peter - 2011

There is extreme heterogeneity of firms regulated under the European Emissions Trading Scheme (EU ETS) in terms of emissions evels and employed technology. We present a model that shows that behavior of firms under quantity regulation can differ strongly, dependent on the characteristics of the...

Persistent link: https://www.econbiz.de/10009159878