Patent Validation at the Country Level - The Role of Fees and Translation costs (2007)
Harhoff, Dietmar, Hoisl, Karin, Reichl, Bettina
One feature of the European patent system that is heavily criticized nowadays is related to its complex fragmentation and the induced cost burden for applicants. Once a patent is granted by the EPO,...
Venture capitalists' evaluation of start-up teams: A discrete choice conjoint analysis (2007)
Gruber, Marc, Franke, Nikolaus, Harhoff, Dietmar, Henkel, Joachim
Franke, Nikolaus, Gruber, Marc, Harhoff, Dietmar, Henkel, Joachim
This paper extends recent research studying biases in venture capitalist's decision making. We contribute to this literature by analyzing biases arising from similarities between a venture capitalist...
Modeling the Duration of Patent Examination at the European Patent Office (2006)
Harhoff, Dietmar, Wagner, Stefan
We analyze the duration of the patent examination process at the European Patent Office (EPO). Our data contain information related to the patent’s economic and technical relevance, EPO capacity...
Harhoff, Dietmar, Hoisl, Karin
Based on a survey of the inventors of 9,017 European patented inventions, this paper provides new information about the characteristics of European inventors, the sources of their knowledge, the...
Harhoff, Dietmar, Hoisl, Karin
Germany is one of few countries in which the monetary compensation for inventors is not only determined by negotiations between employer and employee-inventor, but also by relatively precise legal...
Exploring the Tail of Patented Invention Value Distributions (2004)
Harhoff, Dietmar, Scherer, Frederic M., Vopel, Katrin
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...
Citation Frequency and the Value of Patented Innovation (2004)
Harhoff, Dietmar, Narin, Francis, Scherer, Frederic M., Vopel, Katrin
Through a survey, economic value estimates were obtained on 962 inventions made in the United States and Germany and on which German patent renewal fees were paid to full-term expiration in 1995. A...
Innovationsanreize in einem strukturellen Oligopolmodel (2004)
In diesem Beitrag wird ein Oligopolmodell der Innovationsaktivität entwickelt und mit Daten aus dem Mannheimer Innovationspanel geschätzt. Das Modell erlaubt es, bei der empirischen Umsetzung auf...
Lending relationships in Germany - Empirical evidence from survey data (2004)
Harhoff, Dietmar, Körting, Timm
We examine empirically the role of lending relationships in determining the costs and collateral requirements for external funds. The data originate from a recently concluded survey of small and...
Fier, Andreas, Harhoff, Dietmar
In Deutschland beanspruchen gleich zwei Ressorts, das Bundesministerium für Bildung und Forschung (BMBF) sowie das Bundesministerium für Wirtschaft und Technologie (BMWi) die Zuständigkeit für...
Corporate R&D and productivity in Germany and the United Kingdom (2003)
Bond, Stephen, Harhoff, Dietmar, Van Reenen, John
This paper analyzes differences in R&D spending and in the impact of R&D on productivity between German and UK firms. We confirm that German firms spend significantly larger amounts on R&D than their...
Investment, R&D and financial constraints in Britain and Germany (2003)
Bond, Stephen, Harhoff, Dietmar, Van Reenen, John
This paper tests for the importance of cash flow on investment in fixed capital and R&D using firm-level panel data in two countries between 1985 and 1994. For German firms, cash flow is not...
Corporate R&D and productivity in Germany and the United Kingdom (2003)
Bond, Stephen, Harhoff, Dietmar, Van Reenen, John
This paper analyzes differences in R&D spending and in the impact of R&D on productivity between German and UK firms. We confirm that German firms spend significantly larger amounts on R&D than their...
Investment, R&D and financial constraints in Britain and Germany (2003)
Bond, Stephen, Harhoff, Dietmar, Van Reenen, John
This paper tests for the importance of cash flow on investment in fixed capital and R&D using firm-level panel data in two countries between 1985 and 1994. For German firms, cash flow is not...
Corporate R&D and productivity in Germany and the United Kingdom (2003)
Bond, Stephen, Harhoff, Dietmar, Van Reenen, John
This paper analyzes differences in R&D spending and in the impact of R&D on productivity between German and UK firms. We confirm that German firms spend significantly larger amounts on R&D than their...
Investment, R&D and financial constraints in Britain and Germany (2003)
Bond, Stephen, Harhoff, Dietmar, Van Reenen, John
This paper tests for the importance of cash flow on investment in fixed capital and R&D using firm-level panel data in two countries between 1985 and 1994. For German firms, cash flow is not...
Prospects for Improving U.S. Patent Quality via Post-grant Opposition (2003)
Hall, Bronwyn H., Graham, Stuart J. H., Harhoff, Dietmar, Mowery, David C.
The recent surge in U.S. patenting and expansion of patentable subject matter has increased patent office backlogs and raised concerns that in some cases patents of insufficient quality or with...
Prospects for Improving U.S. Patent Quality via Post-grant Opposition (2003)
Hall, Bronwyn H., Graham, Stuart J. H., Harhoff, Dietmar, Mowery, David C.
The recent surge in U.S. patenting and expansion of patentable subject matter has increased patent office backlogs and raised concerns that in some cases patents of insufficient quality or with...
Graham, Stuart J.H., Hall, Bronwyn H., Harhoff, Dietmar, Mowery , David C.
We report the results of the first comparative study of the determinants and effects of patent oppositions in Europe and of re-examinations on corresponding patents issued in the United States. The...
Graham, Stuart J. H., Hall, Bronwyn H., Harhoff, Dietmar, Mowery , David C.
We report the results of the first comparative study of the determinants and effects of patent oppositions in Europe and of re-examinations on corresponding patents issued in the United States. The...
Exploring The Effects Of Patent Oppositions: A Comparative Study Of Us And European Patents (2001)
Dietmar Harhoff, Bronwyn H. Hall, David C. Mowery
this paper are twofold: 1) What are the determinants of the post-issue challenges of patent validity in the United States and Europe? 1 2) How do patents pertaining to the same invention fare in the...
Profiting From Voluntary Information Spillovers: (2001)
Dietmar Harhoff, Joachim Henkel
Empirical studies of innovation have found that end users frequently develop important product and process innovations. Defying conventional wisdom on the negative effects of uncompensated...
Investment, R&D and Financial Constraints in Britain and Germany (2000)
Dietmar Harhoff, Stephen Bond, Dietmar Harho, John Van Reenen
This paper tests for the importance of cash #ow on investment in ...xed capital and R&D using ...rm-level panel data in two countries. For German ...rms, cash #ow is not informative in simple...
Citation Frequency and the Value of Patented Innovation (1999)
Dietmar Harhoff, Francis Narin, Frederic M. Scherer, Katrin Vopel
Citation Frequency and the Value of Patented Innovation by Dietmar Harhoff, Francis Narin, Frederic M. Scherer, Katrin Vopel * Through a survey, economic value estimates were obtained on 962...
Thesis (Ph. D.)--Massachusetts Institute of Technology, Sloan School of Management, 1991.
Thesis (Ph. D.)--Massachusetts Institute of Technology, Sloan School of Management, 1991.
Thesis (Ph. D.)--Massachusetts Institute of Technology, Sloan School of Management, 1991.
Modelling the duration of patent examination at the European Patent Office
Harhoff, Dietmar, Wagner, Stefan
We analyze the duration of patent examination at the European Patent Office (EPO). Our data contain variables that are correlates of the applicants’ and examiners’ assessments of a patent’s...
Can Post-Grant Reviews Improve Patent System Design? A Twin Study of US and European Patents
Graham, Stuart J.H., Harhoff, Dietmar
This paper assesses the impact of adopting a post-grant review institution in the US patent system by comparing the “opposition careers” of European Patent Office (EPO) equivalents of litigated...
Brusoni, Stefano, Crespi, Gustavo, Francoz, Dominique, Gambardella, Alfonso, Garcia-Fontes, Walter, Geuna, Aldo, ...
Based on a survey of the inventors of 9,017 European patented inventions, this paper provides new information about the characteristics of European inventors, the sources of their knowledge, the...
Innovationsanreize in einem strukturellen Oligopolmodel
In diesem Beitrag wird ein Oligopolmodell der Innovationsaktivität entwickelt und mit Daten aus dem Mannheimer Innovationspanel geschätzt. Das Modell erlaubt es, bei der empirischen Umsetzung auf...
Citation Frequency and the Value of Patented Innovation
Harhoff, Dietmar, Narin, Francis, Scherer, Frederic M., Vopel, Katrin
Through a survey, economic value estimates were obtained on 962 inventions made in the United States and Germany and on which German patent renewal fees were paid to full-term expiration in 1995. A...
Exploring the Tail of Patented Invention Value Distributions
Harhoff, Dietmar, Scherer, Frederic M., Vopel, Katrin
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...
R&D Spillovers, Technological Proximity, And Productivity Growth – Evidence From German Panel Data
This paper studies the effect of R&D spillovers on R&D spending and productivity in a sample of German manufacturing firms. Using panel estimation techniques, the results suggest that spillovers...
Patent Validation at the Country Level - The Role of Fees and Translation costs
Harhoff, Dietmar, Hoisl, Karin, Reichl, Bettina, Van Pottelsberghe, Bruno
One feature of the European patent system that is heavily criticized nowadays is related to its complex fragmentation and the induced cost burden for applicants. Once a patent is granted by the EPO,...
Corporate R&D and Productivity in Germany and the United Kingdom
Stephen Bond, Dietmar Harhoff, John Van Reenen
This paper analyzes differences in R&D spending and in the impact of R&D on productivity betweenGerman and UK firms. We confirm that German firms spend significantly larger amounts on R&D thantheir...
Investment, R&D and Financial Constraints in Britain and Germany
Stephen Bond, Dietmar Harhoff, John Van Reenen
This paper analyzes di¤erences in R&D spending and in the impact of R&Don productivity between German and UK ¿rms. We con¿rm that German ¿rmsspend signi¿cantly larger amounts on R&D than their...
Harhoff, Dietmar, Stahl, Konrad, Woywode, Michael
Using a sample of approximately 11,000 West German firms from all major sectors of the economy, the authors test predictions on the relationship between legal form, firm survival, and employment...
Some simple economics of GM food
Dietmar Harhoff, Pierre Régibeau, Katharine Rockett
Public opposition to the genetic engineering of food crops (GM food) has not been based solely on concern about biological risks. Economic risks have been widely cited too: the fear that the world's...
Die Evolution der bundesdeutschen Forschungs- und Technologiepolitik: Rückblick und Bestandsaufnahme
In national innovation systems, universities are not only essential elements of the research infrastructure, but also main players in the field of education and further education. Their specific role...
Innovation, Entrepreneurship und Demographie
The German economy is highly specialized in incremental innovations. A number of high-technology industries have established themselves in Germany only slowly over the last decades. Innovation policy...
Innovation, Entrepreneurship und Demographie
The German economy is highly specialized in incremental innovations. A number of high-technology industries have established themselves in Germany only slowly over the last decades. Innovation policy...
Bronwyn H. Hall, Dietmar Harhoff, David C. Mowery
We report the results of the first comparative study of the determinants and effects of patent oppositions in Europe and of re- examinations on corresponding patents issued in the United States. The...
Patent Validation at the Country Level - The Role of Fees and Translation costs
Harhoff, Dietmar, Hoisl, Karin, Reichl, Bettina
One feature of the European patent system that is heavily criticized nowadays is related to its complex fragmentation and the induced cost burden for applicants. Once a patent is granted by the EPO,...
Harhoff, Dietmar, Hoisl, Karin
Based on a survey of the inventors of 9,017 European patented inventions, this paper provides new information about the characteristics of European inventors, the sources of their knowledge, the...
Institutionalized Incentives for Ingenuity – Patent Value and the German Employees’ Inventions Act
Harhoff, Dietmar, Hoisl, Karin
Germany is one of few countries in which the monetary compensation for inventors is not only determined by negotiations between employer and employee-inventor, but also by relatively precise legal...
Modeling the Duration of Patent Examination at the European Patent Office
Harhoff, Dietmar, Wagner, Stefan
We analyze the duration of the patent examination process at the European Patent Office (EPO). Our data contain information related to the patent’s economic and technical relevance, EPO capacity...
Inventors and invention processes in Europe: Results from the PatVal-EU survey
Giuri, Paola, Mariani, Myriam, Brusoni, Stefano, Crespi, Gustavo, Francoz, Dominique, Gambardella, Alfonso, ...
Prospects for Improving U.S. Patent Quality via Post-grant Opposition
Bronwyn Hall, Stuart Graham, Dietmar Harhoff, David Mowery
The recent surge in U.S. patenting and expansion of patentable subject matter has increased patent office backlogs and raised concerns that in some cases patents of insufficient quality or with...
Harhoff, Dietmar, Stahl, Konrad O., Woywode, Michael
In this paper we discuss determinants of firm survival and growth in Germany within its pre-1989 boundaries. We argue that the legal form adopted by a firm is an important indicator of the riskiness...
Prospects for Improving U.S. Patent Quality via Post-grant Opposition
Bronwyn H. Hall, Dietmar Harhoff, David C. Mowery
The recent surge in U.S. patenting and expansion of patentable subject matter has increased patent office backlogs and raised concerns that in some cases patents of insufficient quality or with...
Investment, R&D and financial constraints in Britain and Germany
Steve Bond, Dietmar Harhoff, John Van Reenen
This paper tests for the importance of cash flow on investment in fixed capital and R&D using firm-level panel data in two countries between 1985 and 1994. For German firms, cash flow is not...
Stuart Graham, Bronwyn Hall, Dietmar Harhoff, David Mowery
We report the results of the first comparative study of the determinants and effects of patent oppositions in Europe and of re-examinations on corresponding patents issued in the United States. The...
Is the German Apprenticeship System a Panacea for the US Labour Market?
Harhoff, Dietmar, Kane, Thomas J
Advocates of apprenticeship programmes often argue as if it is simply a matter of historical accident that such investment by US firms has been hindered. This paper explores the structure of...
Lending Relationships in Germany: Empirical Results from Survey Data
Harhoff, Dietmar, Körting, Timm
We examine empirically the role of lending relationships in determining the collateral requirements, costs and availability of external funding. The data originates from a recently concluded survey...
Determinants of Opposition Against EPO Patent Grants - The Case of Biotechnology and Pharmaceuticals
Harhoff, Dietmar, Reitzig, Markus
We analyse the determinants of opposition to biotechnology and pharmaceutical patents granted by the European Patent Office between 1978–96. Opposition can be considered an early form of patent...
Citation Frequency And The Value Of Patented Inventions
Dietmar Harhoff, Francis Narin, F. M. Scherer, Katrin Vopel
Through a survey, private economic value estimates were obtained on 964 inventions made in the United States and Germany and on which German patent renewal fees were paid to full-term expiration in...
Paola Giuri, Myriam Mariani, Stefano Brusoni, Gustavo Crespi, Dominique Francoz, Alfonso Gambardella, ...
By drawing information from a survey of inventors of 9,017 European patents (PatVal-EU), this paper provides novel and detailed data about the characteristics of the European inventors, the sources...
Fier, Andreas, Harhoff, Dietmar
In Deutschland beanspruchen gleich zwei Ressorts, das Bundesministerium für Bildung und Forschung (BMBF) sowie das Bundesministerium für Wirtschaft und Technologie (BMWi) die Zuständigkeit für...
Price Indexes for PC Database Software and the Value of Code Compatibility
Harhoff, Dietmar, Moch, Dietmar
Changing product quality poses a challenge for the computation of price indexes, in particular in technologically advanced industries. We assess the differences between traditional and...
Is the German apprenticeship system a panacea for the U.S. labor market?
Thomas J. Kane, Dietmar Harhoff
This paper explores the structure of incentives undergirding the German system of apprenticeship training. We first describe characteristics of the German labor market which may lead firms to accept...
Incidence and Growth of Patent Thickets - The Impact of Technological Opportunities and Complexity
Harhoff, Dietmar, Von Graevenitz, Georg, Wagner, Stefan
We investigate incidence and evolution of patent thickets. A theoretical model of patenting encompassing complex and discrete technologies is introduced. It is shown that decreased technological...
Gambardella, Alfonso, Harhoff, Dietmar, Verspagen, Bart
This paper employs data from an extensive European survey to produce one of the first systematic assessments of the private economic value of patents. The estimated mean of our patent value...
Uncertainty and the size distribution of rewards from innovation
F. M. Scherer, Dietmar Harhoff, J, Rg Kukies
Previous research has shown that the distribution of profit outcomes from technological innovations is highly skew. This paper builds upon those detailed findings to ask: what stochastic processes...
Analysing European and International Patent Citations: A Set of EPO Patent Database Building Blocks
Colin Webb, Hélène Dernis, Dietmar Harhoff, Karin Hoisl
This paper presents a preliminary set of European and international citation data tables designed to enable researchers to become familiar with the subject and undertake a range of analyses. It...
Incentives to Innovate: A Structural Model of Oligopoly (available only in German!)
The paper develops an oligopoly model of innovation and applies it to data from the Mannheim Innovation Panel. The model circumvents the need for market share and price elasticity data which...
Citation Frequency and the Value of Patented Innovation
Dietmar Harhoff, Francis Narin, Frederic M. Scherer, Katrin Vopel
Through a survey, economic value estimates were obtained on 962 inventions made in the United States and Germany and on which German patent renewal fees were paid to full-term expiration in 1995. A...
Exploring the Tail of Patented Invention Value Distributions
Dietmar Harhoff, Frederic M. Scherer, Katrin Vopel
Patent renewal studies reveal a highly rightward-skewed distribution of patent values. Our approach elicits valuations approximating those of the patented invention. This paper focuses on the...