Further Publications, Press Articles, Interviews Harhoff, Dietmar; Heumann, Stefan; Jentzsch, Nicola; Lorenz, Philippe 2018. Die Evolution der bundesdeutschen Forschungs— und Technologiepolitik: Rückblick und Bestandsaufnahme, Perspektiven der Wirtschaftspolitik, 3 3 , 279-301. We hypothesize that incentives to bring postgrant validity challenges are reduced when many firms benefit from revocation of a patent and when firms are caught up in patent thickets. Dies schlägt sich auch in einer steigenden Anzahl von empirischen Beiträgen in Fachzeitschriften nieder, bei denen Wirtschaftsforschende eigene Forschungsdaten erhoben oder externe Datensätze verarbeitet haben. The review includes Ethical dilemmas … Autor: Christopher L. Harhoff, Dietmar; Sandner, Philipp 2006. The higher an invention's economic value estimate was, the more the patent was subsequently cited.
The analysis is grounded to the ethical duty to obey law generally and highlights two competing orientations to statutory … Autor: Daniel T. Courts in Germany hear by far the largest number of cases in absolute terms, but also when taking country size into account. Moreover, the cost level of litigation in the unified Patent Court system is likely to be below the cost levels currently observed in some Member States and parties in these Member States are also likely to engage in more litigation activity in the medium-run. Franke, Nikolaus; Gruber, Marc; Harhoff, Dietmar; Henkel, Joachim 2008. These will be mostly determined by the private costs for legal support and advice, but also by the fees levied by the Court itself. We conclude from our data that the law creates substantial monetary rewards for productive inventors. Additional evidence from survey data suggests that the cash flow sensitivity of investment in small firms is likely to reflect financing constraints.
This is manifested, for example, in the number of start—up chairs, the development of networks to exploit the start—up potential of universities together with regional partners, and in the numbers of spin—offs established. Harhoff, Dietmar; Ramb, Fred 2001. Should There Be Lower Taxes on Patent Income? The investment Euler equation for large firms appears to perform relatively well and yields results close to those expected under the null hypothesis of no financing constraints. Pour les grandes entreprises, les résultats obtenus indiquent une absence de contraintes financières. The data analysis demonstrates that small and relatively young enterprises are particularly likely to indicate that lack of new equity or debt finance is an impediment to investment and innovation activities. We also control for variables that have traditionally been included in estimations of inventive performance such as inventor age and a broad list of applicant institution-, technology-, patent-, and period-related information.
Science, Research, and Innovation in Germany: 2000 to 2017, in: Dalia Marin ed. Our article reflects some of the principal reasons why economic research often is not replicable and suggests recommendations on how to meet these challenges. Mannheim: Zentrum für Europäische Wirtschaftsforschung. Deutscher Innovationsgipfel München Location: Munich 21. Bellmann, Lutz; Harhoff, Dietmar; Schulz, Norbert 1999. We contribute to this literature by analyzing biases arising from similarities between a venture capitalist and members of a venture team. Citations, Family Size, Opposition and the Value of Patent Rights, Research Policy, 32 8 , 1343-1363.
Moreover, the effect is particularly strong for relatively small patent holders facing comparatively small follow-on innovators. Harhoff, Dietmar; Stahl, Konrad O. Mannheim: Zentrum für Europäische Wirtschaftsforschung. How to Measure Patent Thickets: A Novel Approach, Economics Letters, 111 1 , 6-9. Much of this effect vanishes once error-correcting behavior is taken into account, but a significant positive relationship between cash flow and investment remains for relatively small firms.
Harhoff, Dietmar; Lakhani, Karim R. Cremers, Katrin; Ernicke, Max; Gaessler, Fabian; Harhoff, Dietmar; Helmers, Christian; McDonagh, Luke; Schliessler, Paula; van Zeebroeck, Nicolas 2013. Eckpunkte einer nationalen Strategie für Künstliche Intelligenz. We find that investments in individual inventions exhibit diminishing returns, and that a good part of the value of a portfolio depends on adding new patented inventions. The above estimates and considerations are based on the assumption that the unified Patent Court will offer litigation at roughly the same cost level as the three largest low-cost national systems. Discussion Papers Harhoff, Dietmar; Heumann, Stefan; Jentzsch, Nicola; Lorenz, Philippe 2018.
Innovationsanreize in einem strukturellen Oligopolmodell, Zeitschrift für Wirtschafts- und Sozialwissenschaften, 117 3 , 323-364. Defying conventional wisdom on the negative effects of uncompensated spillovers, innovative users also often openly reveal their innovations to competing users and to manufacturers. In our tests, we distinguish between voluntary liquidation without losses to creditors and bankruptcy, that is forced liquidation. Replication Studies in Economics — How Many and Which Papers Are Chosen for Replication, and Why? Gutachten zu Forschung, Innovation und technologischer Leistungsfähigkeit Deutschlands 2018. Patent Office — Design Parameters and Expected Impact, Berkeley Law Technology Journal, 19 3 , 989-1016. The Value of European Patents, European Management Review, 5 2 , 69-84. Impulse für Sprunginnovationen in Deutschland, in: Dietmar Harhoff, Henning Kagermann, Martin Stratmann eds.
This paper develops implications of these results for managerial decision making in research and development and innovation management. Franke, Nikolaus; Gruber, Marc; Harhoff, Dietmar; Henkel, Joachim 2006. Gruber, Marc; Harhoff, Dietmar; Tausend, Christian 2003. The estimation results also confirm the importance of network effects. The data originate from a recently concluded survey of small and medium-sized German firms.
Hence, the cost-benefit assessment focusing on avoided duplication leads to a highly positive evaluation of the proposal. We investigate different types of unused patents—unused blocking patents and sleeping patents. Existing research contributes to a better understanding of the incentives that drive economic agents to rely on the patent system e. Ausgewählte Ergebnisse aus der ersten Welle des Mannheimer Innovationspanels, in: Christoph Grenzmann, M. Our analysis also suggests that mandatory data disclosure policies may have a positive effect on the incidence of replication. This complexity extends to the influencers operating at different levels both outside and within the organisation, and in different combinations for different individuals. Frosch, Katharina; Harhoff, Dietmar; Hoisl, Karin; Steinle, Christian; Zwick, Thomas 2015.
Patents and Cumulative Innovation — Evidence from Post-Grant Patent Oppositions, Academy of Management Proceedings:1. We first describe characteristics of the German labor market which may lead firms to accept part of the cost of general training, even in the face of worker turnover. Alexander Gerybadze am Lehrstuhl für Internationales Management und Innovation der Universität Hohenheim. Neue Ansätze zur Regionalökonomik Wirtschaftswissenschaftliches Seminar Ottobeuren, 24 , 83-115. We confirm that these differences do not simply reflect a greater role for current cash flow in forecasting future sales. We test several hypotheses using a sample of British and German companies that seek venture capital. Dazu werden aus ökonomischer Sicht der Status quo und die wirtschaftlichen Potenziale der digitalen Transformation in Deutschland untersucht.