On the urban bias of patents and the scaling of innovation
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- Bettencourt, Luis M.A. & Lobo, Jose & Strumsky, Deborah, 2007. "Invention in the city: Increasing returns to patenting as a scaling function of metropolitan size," Research Policy, Elsevier, vol. 36(1), pages 107-120, February.
- Santarelli, Enrico & Piergiovanni, Roberta, 1996.
"Analyzing literature-based innovation output indicators: the Italian experience,"
Research Policy, Elsevier, vol. 25(5), pages 689-711, August.
- E. Santarelli, 1994. "Analysing Literature-Based Innovation Output Indicators: The Italian Experience," Working Papers 197, Dipartimento Scienze Economiche, Universita' di Bologna.
- Higham, Kyle & de Rassenfosse, Gaétan & Jaffe, Adam B., 2021.
"Patent Quality: Towards a Systematic Framework for Analysis and Measurement,"
Research Policy, Elsevier, vol. 50(4).
- Kyle W. Higham & Gaétan de Rassenfosse & Adam B. Jaffe, 2020. "Patent Quality: Towards a Systematic Framework for Analysis and Measurement," NBER Working Papers 27598, National Bureau of Economic Research, Inc.
- Higham, Kyle & de Rassenfosse, Gaetan & Jaffe, Adam B, 2020. "Patent Quality: Towards a Systematic Framework for Analysis and Measurement," SocArXiv 49qxk, Center for Open Science.
- Kyle Higham & Gaetan de Rassenfosse & Adam Jaffe, 2021. "Patent quality: Towards a Systematic Framework for Analysis and Measurement," Working Papers 14, Chair of Science, Technology, and Innovation Policy.
- Joshua Lerner, 1994. "The Importance of Patent Scope: An Empirical Analysis," RAND Journal of Economics, The RAND Corporation, vol. 25(2), pages 319-333, Summer.
- Petra Moser, 2005.
"How Do Patent Laws Influence Innovation? Evidence from Nineteenth-Century World's Fairs,"
American Economic Review, American Economic Association, vol. 95(4), pages 1214-1236, September.
- Petra Moser, 2003. "How Do Patent Laws Influence Innovation? Evidence from Nineteenth-Century World Fairs," NBER Working Papers 9909, National Bureau of Economic Research, Inc.
- Fritsch, Michael & Wyrwich, Michael, 2021.
"Is innovation (increasingly) concentrated in large cities? An international comparison,"
Research Policy, Elsevier, vol. 50(6).
- Michael Fritsch & Michael Wyrwich, 2020. "Is innovation (increasingly) concentrated in large cities? An international comparison," Papers in Evolutionary Economic Geography (PEEG) 2010, Utrecht University, Department of Human Geography and Spatial Planning, Group Economic Geography, revised Feb 2020.
- Michael Fritsch & Michael Wyrwich, 2020. "Is innovation (increasingly) concentrated in large cities? An international comparison," Jena Economics Research Papers 2020-003, Friedrich-Schiller-University Jena.
- Grupp, Hariolf & Schubert, Torben, 2010. "Review and new evidence on composite innovation indicators for evaluating national performance," Research Policy, Elsevier, vol. 39(1), pages 67-78, February.
- Benedetto Lepori & Rémi Barré & Ghislaine Filliatreau, 2008. "New perspectives and challenges for the design and production of S&T indicators," Research Evaluation, Oxford University Press, vol. 17(1), pages 33-44, March.
- Carolina Castaldi & Koen Frenken & Bart Los, 2015.
"Related Variety, Unrelated Variety and Technological Breakthroughs: An analysis of US State-Level Patenting,"
Regional Studies, Taylor & Francis Journals, vol. 49(5), pages 767-781, May.
- Carolina Castaldi & Koen Frenken & Bart Los, 2013. "Related Variety, Unrelated Variety and Technological Breakthroughs: An analysis of U.S. state-level patenting," Papers in Evolutionary Economic Geography (PEEG) 1302, Utrecht University, Department of Human Geography and Spatial Planning, Group Economic Geography, revised Mar 2013.
- Carolina Castaldi & Koen Frenken & Bart Los, 2013. "Related Variety, Unrelated Variety and Technological Breakthroughs: an analysis of U.S. state-level patenting," Working Papers 13-03, Eindhoven Center for Innovation Studies, revised Feb 2013.
- Bart Los & Carolina Castaldi & Koen Frenken, 2013. "Related Variety, Unrelated Variety and Technological Breakthroughs: An Analysis of U.S. State-Level Patenting," ERSA conference papers ersa13p524, European Regional Science Association.
- Diego Puga, 2010.
"The Magnitude And Causes Of Agglomeration Economies,"
Journal of Regional Science, Wiley Blackwell, vol. 50(1), pages 203-219, February.
- Diego Puga, 2009. "The magnitude and causes of agglomeration economies," Working Papers 2009-09, Instituto Madrileño de Estudios Avanzados (IMDEA) Ciencias Sociales.
- Tom Broekel & Louis Knuepling & Lars Mewes, 2023.
"Boosting, sorting and complexity—urban scaling of innovation around the world,"
Journal of Economic Geography, Oxford University Press, vol. 23(5), pages 979-1016.
- Tom Broekel & Louis Knupling & Lars Mewes, 2023. "Boosting, Sorting, and Complexity. Urban Scaling of Innovation Around the World," Papers in Evolutionary Economic Geography (PEEG) 2308, Utrecht University, Department of Human Geography and Spatial Planning, Group Economic Geography, revised Mar 2023.
- Markus Grillitsch & Magnus Nilsson, 2015.
"Innovation in peripheral regions: Do collaborations compensate for a lack of local knowledge spillovers?,"
The Annals of Regional Science, Springer;Western Regional Science Association, vol. 54(1), pages 299-321, January.
- Grillitsch , Markus & Nilsson , Magnus, 2014. "Innovation in peripheral regions: Do collaborations compensate for a lack of local knowledge spillovers?," Papers in Innovation Studies 2014/33, Lund University, CIRCLE - Centre for Innovation Research.
- Teemu Makkonen & Robert P. Have, 2013. "Benchmarking regional innovative performance: composite measures and direct innovation counts," Scientometrics, Springer;Akadémiai Kiadó, vol. 94(1), pages 247-262, January.
- Coad, Alex & Rao, Rekha, 2008.
"Innovation and firm growth in high-tech sectors: A quantile regression approach,"
Research Policy, Elsevier, vol. 37(4), pages 633-648, May.
- Alex Coad & Rekha Rao, 2006. "Innovation and Firm Growth in High-Tech Sectors: A Quantile Regression Approach," LEM Papers Series 2006/18, Laboratory of Economics and Management (LEM), Sant'Anna School of Advanced Studies, Pisa, Italy.
- Alex Coad & Rekha Rao, 2007. "Innovation and Firm Growth in High-Tech Sectors: A Quantile Regression Approach," Open Discussion Papers in Economics 57, The Open University, Faculty of Social Sciences, Department of Economics.
- Dziallas, Marisa & Blind, Knut, 2019. "Innovation indicators throughout the innovation process: An extensive literature analysis," Technovation, Elsevier, vol. 80, pages 3-29.
- Manuel Trajtenberg, 1990. "A Penny for Your Quotes: Patent Citations and the Value of Innovations," RAND Journal of Economics, The RAND Corporation, vol. 21(1), pages 172-187, Spring.
- Alegre-Vidal, Joaquin & Lapiedra-Alcami, Rafael & Chiva-Gomez, Ricardo, 2004. "Linking operations strategy and product innovation: an empirical study of Spanish ceramic tile producers," Research Policy, Elsevier, vol. 33(5), pages 829-839, July.
- J. Lobo & D. Strumsky & J. Rothwell, 2013. "Scaling of patenting with urban population size: evidence from global metropolitan areas," Scientometrics, Springer;Akadémiai Kiadó, vol. 96(3), pages 819-828, September.
- Hollenstein, Heinz, 1996. "A composite indicator of a firm's innovativeness. An empirical analysis based on survey data for Swiss manufacturing," Research Policy, Elsevier, vol. 25(4), pages 633-645, June.
- Carlino, Gerald A. & Chatterjee, Satyajit & Hunt, Robert M., 2007.
"Urban density and the rate of invention,"
Journal of Urban Economics, Elsevier, vol. 61(3), pages 389-419, May.
- Gerald A. Carlino & Satyajit Chatterjee & Robert M. Hunt, 2006. "Urban density and the rate of invention," Working Papers 06-14, Federal Reserve Bank of Philadelphia.
- Archibugi, Daniele & Coco, Alberto, 2005. "Measuring technological capabilities at the country level: A survey and a menu for choice," Research Policy, Elsevier, vol. 34(2), pages 175-194, March.
- Grupp, Hariolf & Mogee, Mary Ellen, 2004. "Indicators for national science and technology policy: how robust are composite indicators?," Research Policy, Elsevier, vol. 33(9), pages 1373-1384, November.
- Criscuolo, Paola & Verspagen, Bart, 2008. "Does it matter where patent citations come from? Inventor vs. examiner citations in European patents," Research Policy, Elsevier, vol. 37(10), pages 1892-1908, December.
- Luís M A Bettencourt & José Lobo & Deborah Strumsky & Geoffrey B West, 2010. "Urban Scaling and Its Deviations: Revealing the Structure of Wealth, Innovation and Crime across Cities," PLOS ONE, Public Library of Science, vol. 5(11), pages 1-9, November.
- Wesley M. Cohen & Richard R. Nelson & John P. Walsh, 2000.
"Protecting Their Intellectual Assets: Appropriability Conditions and Why U.S. Manufacturing Firms Patent (or Not),"
NBER Working Papers
7552, National Bureau of Economic Research, Inc.
- Wesley M Cohen & Richard R Nelson & John P Walsh, 2003. "Protecting Their Intellectual Assets: Appropriability Conditions and Why U.S. Manufacturing Firms Patent (Or Not)," Levine's Working Paper Archive 618897000000000624, David K. Levine.
- Taalbi, Josef, 2017. "What drives innovation? Evidence from economic history," Research Policy, Elsevier, vol. 46(8), pages 1437-1453.
- L. M.A. Bettencourt & J. Lobo & G. B. West, 2008. "Why are large cities faster? Universal scaling and self-similarity in urban organization and dynamics," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 63(3), pages 285-293, June.
- Arthur, W. Brian, 2007. "The structure of invention," Research Policy, Elsevier, vol. 36(2), pages 274-287, March.
- Josh Lerner, 2009. "The Empirical Impact of Intellectual Property Rights on Innovation: Puzzles and Clues," American Economic Review, American Economic Association, vol. 99(2), pages 343-348, May.
- Richard Florida & Patrick Adler & Charlotta Mellander, 2017. "The city as innovation machine," Regional Studies, Taylor & Francis Journals, vol. 51(1), pages 86-96, January.
- Jung Won Sonn & In Kwon Park, 2011. "The Increasing Importance of Agglomeration Economies Hidden behind Convergence," Urban Studies, Urban Studies Journal Limited, vol. 48(10), pages 2180-2194, August.
- Fontana, Roberto & Nuvolari, Alessandro & Shimizu, Hiroshi & Vezzulli, Andrea, 2013.
"Reassessing patent propensity: Evidence from a dataset of R&D awards, 1977–2004,"
Research Policy, Elsevier, vol. 42(10), pages 1780-1792.
- Roberto Fontana & Alessandro Nuvolari & Hiroshi Shimizu & Andrea Vezzulli, 2013. "Reassessing patent propensity: evidence from a data-set of R&D awards 1977-2004," Working Papers Department of Economics 2013/09, ISEG - Lisbon School of Economics and Management, Department of Economics, Universidade de Lisboa.
- Zoltan Acs & David Audretsch, 1990. "Innovation and Small Firms," MIT Press Books, The MIT Press, edition 1, volume 1, number 0262011131, April.
- Zoltan J. Acs & Luc Anselin & Attila Varga, 2008.
"Patents and Innovation Counts as Measures of Regional Production of New Knowledge,"
Chapters, in: Entrepreneurship, Growth and Public Policy, chapter 11, pages 135-151,
Edward Elgar Publishing.
- Acs, Zoltan J. & Anselin, Luc & Varga, Attila, 2002. "Patents and innovation counts as measures of regional production of new knowledge," Research Policy, Elsevier, vol. 31(7), pages 1069-1085, September.
- Harhoff, Dietmar & Gambardella, Alfonso & Verspagen, Bart, 2008. "The Value of European Patents," CEPR Discussion Papers 6848, C.E.P.R. Discussion Papers.
- Pierre-Alexandre Balland & Cristian Jara-Figueroa & Sergio G. Petralia & Mathieu P. A. Steijn & David L. Rigby & César A. Hidalgo, 2020.
"Complex economic activities concentrate in large cities,"
Nature Human Behaviour, Nature, vol. 4(3), pages 248-254, March.
- Pierre-Alexandre Balland & Cristian Jara-Figueroa & Sergio Petralia & Mathieu Steijn & David Rigby & César Hidalgo, 2018. "Complex Economic Activities Concentrate in Large Cities," Papers in Evolutionary Economic Geography (PEEG) 1829, Utrecht University, Department of Human Geography and Spatial Planning, Group Economic Geography, revised Jul 2018.
- Pierre-Alexandre Balland & Cristian Jara-Figueroa & Sergio G Petralia & Mathieu P A Steijn & David L Rigby & César A. Hidalgo, 2020. "Complex economic activities concentrate in large cities," Post-Print hal-03058602, HAL.
- Wulong Gu & Jianmin Tang, 2004. "Link between innovation and productivity in Canadian manufacturing industries," Economics of Innovation and New Technology, Taylor & Francis Journals, vol. 13(7), pages 671-686.
- Alfred Kleinknecht & Kees Van Montfort & Erik Brouwer, 2002. "The Non-Trivial Choice between Innovation Indicators," Economics of Innovation and New Technology, Taylor & Francis Journals, vol. 11(2), pages 109-121.
- Nelson, Andrew J., 2009. "Measuring knowledge spillovers: What patents, licenses and publications reveal about innovation diffusion," Research Policy, Elsevier, vol. 38(6), pages 994-1005, July.
- Gilbert, Brett Anitra & McDougall, Patricia P. & Audretsch, David B., 2008. "Clusters, knowledge spillovers and new venture performance: An empirical examination," Journal of Business Venturing, Elsevier, vol. 23(4), pages 405-422, July.
- Josh Lerner & Amit Seru, 2022. "The Use and Misuse of Patent Data: Issues for Finance and Beyond," The Review of Financial Studies, Society for Financial Studies, vol. 35(6), pages 2667-2704.
- Gerben Panne, 2007. "Issues in measuring innovation," Scientometrics, Springer;Akadémiai Kiadó, vol. 71(3), pages 495-507, June.
- Josef Taalbi, 2022. "Innovation with and without patents," Papers 2210.04102, arXiv.org.
- Arundel, Anthony & Kabla, Isabelle, 1998. "What percentage of innovations are patented? empirical estimates for European firms," Research Policy, Elsevier, vol. 27(2), pages 127-141, June.
- Nicoletta Corrocher & Franco Malerba & Andrea Morrison, 2021. "Technological regimes, patent growth, and catching-up in green technologies [Global Innovation Systems—a conceptual framework for innovation dynamics in transnational contexts]," Industrial and Corporate Change, Oxford University Press and the Associazione ICC, vol. 30(4), pages 1084-1107.
- Gerben van der Panne & Cees van Beers, 2006. "On the Marshall - Jacobs Controversy It takes two to tango," DRUID Working Papers 06-23, DRUID, Copenhagen Business School, Department of Industrial Economics and Strategy/Aalborg University, Department of Business Studies.
- Michael Roach & Wesley M. Cohen, 2013. "Lens or Prism? Patent Citations as a Measure of Knowledge Flows from Public Research," Management Science, INFORMS, vol. 59(2), pages 504-525, October.
- Mikhail Martynovich & Josef Taalbi, 2023. "Dynamic recombinant relatedness and its role for regional innovation," European Planning Studies, Taylor & Francis Journals, vol. 31(5), pages 1070-1094, May.
- Gerben van der Panne & Cees van Beers, 2006. "On the Marshall--Jacobs controversy: it takes two to tango," Industrial and Corporate Change, Oxford University Press and the Associazione ICC, vol. 15(5), pages 877-890, October.
- Mariagrazia Squicciarini & Hélène Dernis & Chiara Criscuolo, 2013. "Measuring Patent Quality: Indicators of Technological and Economic Value," OECD Science, Technology and Industry Working Papers 2013/3, OECD Publishing.
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More about this item
Keywords
Regional Innovation; Patents; Urban Scaling; Urban Bias of Patents;All these keywords.
NEP fields
This paper has been announced in the following NEP Reports:- NEP-GEO-2024-08-26 (Economic Geography)
- NEP-SBM-2024-08-26 (Small Business Management)
- NEP-TID-2024-08-26 (Technology and Industrial Dynamics)
- NEP-URE-2024-08-26 (Urban and Real Estate Economics)
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