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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
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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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Exploring the Tail of Patented Invention Value Distributions
Scherer, Frederic M.; Harhoff, Dietmar; 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/10010297567
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New evidence on determinants of IP litigation: A market-based approach
Czarnitzki, Dirk; van Criekingen, Kristof - 2018
We contribute to the economic literature on patent litigation by taking a new perspective. In the past, scholars mostly focused on specific litigation cases at the patent level and related technological characteristics to the event of litigation. However, observing IP disputes suggests that not...
Persistent link: https://www.econbiz.de/10011817198
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The rise of process claims: Evidence from a century of U.S. patents
Ganglmair, Bernhard; Robinson, W. Keith; Seeligson, Michael - 2022
We document the occurrence of process claims in granted U.S. patents over the last century. Using novel data on the type of independent patent claims, we show an increase in the annual share of process claims of about 25 percentage points (from below 10% in 1920). This rise in process intensity...
Persistent link: https://www.econbiz.de/10013175974
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Information leakage, imitation, and the patent system
Czarnitzki, Dirk; van Criekingen, Kristof - 2021
From a firm's perspective two competing forces are driving the decision to invest in innovation. On the one hand, innovative performance is an important driver of profitability and growth. On the other hand, investments in innovation suffer from negative externalities, i.e. spillovers to other...
Persistent link: https://www.econbiz.de/10012625069
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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. …
Persistent link: https://www.econbiz.de/10010309806
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Protecting innovation through patents and trade secrets: Determinants and performance impacts for firms with a single innovation
Crass, Dirk; Garcia Valero, Francisco; Pitton, Francesco; … - 2016
This paper tests a number of hypotheses on the use and effectiveness of patents and trade secrets designed to protect innovation. While previous studies have often considered patents and trade secrets as substitutes for one another, we investigate the complementary role of the two protection...
Persistent link: https://www.econbiz.de/10011539589
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Quantity or quality? Collaboration strategies in research and development and incentives to patent
Hottenrott, Hanna; Lopes-Bento, Cindy - Zentrum für Europäische Wirtschaftsforschung (ZEW) - 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. …
Persistent link: https://www.econbiz.de/10010957658
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Exploring the Tail of Patented Invention Value Distributions
Scherer, Frederic M.; Harhoff, Dietmar; Vopel, Katrin - Zentrum für Europäische Wirtschaftsforschung (ZEW) - 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/10005097700