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In search of alliance-level relational capabilities: Balancing innovation value creation and appropriability in R&D alliances

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  • Capaldo, Antonio
  • Messeni Petruzzelli, Antonio

Abstract

Summary In order to advance our knowledge of alliance-level relational capabilities, this paper investigates how searching across different knowledge domains affects both innovation value creation and appropriability in R&D alliances. Focusing on the alliance level of analysis, we advance that, in R&D strategic alliances, search span has a curvilinear (inverted U-shape) relationship with value creation and a positive relationship with value appropriability. Our analysis on a sample of 1515 interfirm dyadic R&D alliances confirms these hypotheses. We find that, after a threshold level of search span, joint value creation decreases. Conversely, the allied firms' ability to appropriate the value of their jointly developed inventions grows exponentially as the alliance search span increases. Thus, value creation and appropriability may have conflicting exigencies. We argue that firms involved in R&D strategic alliances should develop the interorganizational relational capability to jointly manage the process of search that occurs at the interorganizational level, and specifically the span of their search, in ways that balance the needs of value creation and appropriability.

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  • Capaldo, Antonio & Messeni Petruzzelli, Antonio, 2011. "In search of alliance-level relational capabilities: Balancing innovation value creation and appropriability in R&D alliances," Scandinavian Journal of Management, Elsevier, vol. 27(3), pages 273-286, September.
  • Handle: RePEc:eee:scaman:v:27:y:2011:i:3:p:273-286
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    as
    1. Dovev Lavie & Stewart R. Miller, 2008. "Alliance Portfolio Internationalization and Firm Performance," Organization Science, INFORMS, vol. 19(4), pages 623-646, August.
    2. 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.
    3. Hobday, Mike, 1998. "Product complexity, innovation and industrial organisation," Research Policy, Elsevier, vol. 26(6), pages 689-710, February.
    4. Bruce Kogut & Harbir Singh, 1988. "The Effect of National Culture on the Choice of Entry Mode," Journal of International Business Studies, Palgrave Macmillan;Academy of International Business, vol. 19(3), pages 411-432, September.
    5. Lori Rosenkopf & Paul Almeida, 2003. "Overcoming Local Search Through Alliances and Mobility," Management Science, INFORMS, vol. 49(6), pages 751-766, June.
    6. Edward J. Zajac & Cyrus P. Olsen, 1993. "From Transaction Cost To Transactional Value Analysis: Implications For The Study Of Interorganizational Strategies," Journal of Management Studies, Wiley Blackwell, vol. 30(1), pages 131-145, January.
    7. Baudry, Marc & Dumont, Beatrice, 2006. "Comparing firms' triadic patent applications across countries: Is there a gap in terms of R&D effort or a gap in terms of performances?," Research Policy, Elsevier, vol. 35(2), pages 324-342, March.
    8. Singh, Jasjit, 2008. "Distributed R&D, cross-regional knowledge integration and quality of innovative output," Research Policy, Elsevier, vol. 37(1), pages 77-96, February.
    9. Bruce Kogut & Udo Zander, 1992. "Knowledge of the Firm, Combinative Capabilities, and the Replication of Technology," Organization Science, INFORMS, vol. 3(3), pages 383-397, August.
    10. Markus Reitzig & Phanish Puranam, 2009. "Value appropriation as an organizational capability: the case of IP protection through patents," Strategic Management Journal, Wiley Blackwell, vol. 30(7), pages 765-789, July.
    11. Lori Rosenkopf & Atul Nerkar, 2001. "Beyond local search: boundary‐spanning, exploration, and impact in the optical disk industry," Strategic Management Journal, Wiley Blackwell, vol. 22(4), pages 287-306, April.
    12. David J. TEECE, 2008. "Profiting from technological innovation: Implications for integration, collaboration, licensing and public policy," World Scientific Book Chapters, in: The Transfer And Licensing Of Know-How And Intellectual Property Understanding the Multinational Enterprise in the Modern World, chapter 5, pages 67-87, World Scientific Publishing Co. Pte. Ltd..
    13. Gautam Ahuja & Curba Morris Lampert, 2001. "Entrepreneurship in the large corporation: a longitudinal study of how established firms create breakthrough inventions," Strategic Management Journal, Wiley Blackwell, vol. 22(6‐7), pages 521-543, June.
    14. 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.
    15. David J. Teece & Gary Pisano & Amy Shuen, 1997. "Dynamic capabilities and strategic management," Strategic Management Journal, Wiley Blackwell, vol. 18(7), pages 509-533, August.
    16. Arvind Parkhe, 1991. "Interfirm Diversity, Organizational Learning, and Longevity in Global Strategic Alliances," Journal of International Business Studies, Palgrave Macmillan;Academy of International Business, vol. 22(4), pages 579-601, December.
    17. White, Halbert, 1980. "A Heteroskedasticity-Consistent Covariance Matrix Estimator and a Direct Test for Heteroskedasticity," Econometrica, Econometric Society, vol. 48(4), pages 817-838, May.
    18. Sarala, Riikka M., 2010. "The impact of cultural differences and acculturation factors on post-acquisition conflict," Scandinavian Journal of Management, Elsevier, vol. 26(1), pages 38-56, March.
    19. Vijay Pothukuchi & Fariborz Damanpour & Jaepil Choi & Chao C Chen & Seung Ho Park, 2002. "National and Organizational Culture Differences and International Joint Venture Performance," Journal of International Business Studies, Palgrave Macmillan;Academy of International Business, vol. 33(2), pages 243-265, June.
    20. Antonio Capaldo, 2007. "Network structure and innovation: The leveraging of a dual network as a distinctive relational capability," Strategic Management Journal, Wiley Blackwell, vol. 28(6), pages 585-608, June.
    21. Nooteboom, Bart & Van Haverbeke, Wim & Duysters, Geert & Gilsing, Victor & van den Oord, Ad, 2007. "Optimal cognitive distance and absorptive capacity," Research Policy, Elsevier, vol. 36(7), pages 1016-1034, September.
    22. Edwin Mansfield & John Rapoport & Anthony Romeo & Samuel Wagner & George Beardsley, 1977. "Social and Private Rates of Return from Industrial Innovations," The Quarterly Journal of Economics, Oxford University Press, vol. 91(2), pages 221-240.
    23. Lee Fleming & Olav Sorenson, 2004. "Science as a map in technological search," Strategic Management Journal, Wiley Blackwell, vol. 25(8‐9), pages 909-928, August.
    24. A. Colin Cameron & Pravin K. Trivedi, 1986. "Econometric models based on count data. Comparisons and applications of some estimators and tests," Journal of Applied Econometrics, John Wiley & Sons, Ltd., vol. 1(1), pages 29-53, January.
    25. Adelaide Wilcox King & Carl P. Zeithaml, 2001. "Competencies and firm performance: examining the causal ambiguity paradox," Strategic Management Journal, Wiley Blackwell, vol. 22(1), pages 75-99, January.
    26. Harhoff, Dietmar & Scherer, Frederic M. & Vopel, Katrin, 2003. "Citations, family size, opposition and the value of patent rights," Research Policy, Elsevier, vol. 32(8), pages 1343-1363, September.
    27. Kenneth W. Koput, 1997. "A Chaotic Model of Innovative Search: Some Answers, Many Questions," Organization Science, INFORMS, vol. 8(5), pages 528-542, October.
    28. Russell W. Coff, 1999. "When Competitive Advantage Doesn't Lead to Performance: The Resource-Based View and Stakeholder Bargaining Power," Organization Science, INFORMS, vol. 10(2), pages 119-133, April.
    29. Atul Nerkar, 2003. "Old Is Gold? The Value of Temporal Exploration in the Creation of New Knowledge," Management Science, INFORMS, vol. 49(2), pages 211-229, February.
    30. Maurizio Zollo & Jeffrey J. Reuer & Harbir Singh, 2002. "Interorganizational Routines and Performance in Strategic Alliances," Organization Science, INFORMS, vol. 13(6), pages 701-713, December.
    31. John Hagedoorn, 2003. "Sharing intellectual property rights--an exploratory study of joint patenting amongst companies," Industrial and Corporate Change, Oxford University Press, vol. 12(5), pages 1035-1050, October.
    32. Joanne E. Oxley & Rachelle C. Sampson, 2004. "The scope and governance of international R&D alliances," Strategic Management Journal, Wiley Blackwell, vol. 25(8‐9), pages 723-749, August.
    33. Rebecca Henderson & Iain Cockburn, 1994. "Measuring Competence? Exploring Firm Effects in Pharmaceutical Research," Strategic Management Journal, Wiley Blackwell, vol. 15(S1), pages 63-84, December.
    34. Hausman, Jerry & Hall, Bronwyn H & Griliches, Zvi, 1984. "Econometric Models for Count Data with an Application to the Patents-R&D Relationship," Econometrica, Econometric Society, vol. 52(4), pages 909-938, July.
    35. Harry G Barkema & Freek Vermeulen, 1997. "What Differences in the Cultural Backgrounds of Partners Are Detrimental for International Joint Ventures?," Journal of International Business Studies, Palgrave Macmillan;Academy of International Business, vol. 28(4), pages 845-864, December.
    36. Bonaccorsi, Andrea & Thoma, Grid, 2007. "Institutional complementarity and inventive performance in nano science and technology," Research Policy, Elsevier, vol. 36(6), pages 813-831, July.
    37. Hagedoorn, John, 2002. "Inter-firm R&D partnerships: an overview of major trends and patterns since 1960," Research Policy, Elsevier, vol. 31(4), pages 477-492, May.
    38. Kogut, Bruce, 1989. "The Stability of Joint Ventures: Reciprocity and Competitive Rivalry," Journal of Industrial Economics, Wiley Blackwell, vol. 38(2), pages 183-198, December.
    39. Duysters, Geert & Hagedoorn, John, 1996. "Internationalization of corporate technology through strategic partnering: an empirical investigation," Research Policy, Elsevier, vol. 25(1), pages 1-12, January.
    40. Pisano, Gary, 2006. "Profiting from innovation and the intellectual property revolution," Research Policy, Elsevier, vol. 35(8), pages 1122-1130, October.
    41. Frederico Rocha, 1999. "Inter-Firm Technological Cooperation: Effects Of Absorptive Capacity, Firm-Size And Specialization," Economics of Innovation and New Technology, Taylor & Francis Journals, vol. 8(3), pages 253-271.
    42. Richard C. Levin & Alvin K. Klevorick & Richard R. Nelson & Sidney G. Winter, 1987. "Appropriating the Returns from Industrial Research and Development," Brookings Papers on Economic Activity, Economic Studies Program, The Brookings Institution, vol. 18(3, Specia), pages 783-832.
    43. Prashant Kale & Harbir Singh, 2007. "Building firm capabilities through learning: the role of the alliance learning process in alliance capability and firm‐level alliance success," Strategic Management Journal, Wiley Blackwell, vol. 28(10), pages 981-1000, October.
    44. Wang, Q. & von Tunzelmann, N., 2000. "Complexity and the functions of the firm: breadth and depth," Research Policy, Elsevier, vol. 29(7-8), pages 805-818, August.
    45. Jeffrey H. Dyer & Harbir Singh & Prashant Kale, 2008. "Splitting the pie: rent distribution in alliances and networks," Managerial and Decision Economics, John Wiley & Sons, Ltd., vol. 29(2-3), pages 137-148.
    46. Gianni Lorenzoni & Andrea Lipparini, 1999. "The leveraging of interfirm relationships as a distinctive organizational capability: a longitudinal study," Strategic Management Journal, Wiley Blackwell, vol. 20(4), pages 317-338, April.
    47. Dovev Lavie, 2007. "Alliance portfolios and firm performance: A study of value creation and appropriation in the U.S. software industry," Strategic Management Journal, Wiley Blackwell, vol. 28(12), pages 1187-1212, December.
    48. Jean O. Lanjouw & Mark Schankerman, 2004. "Patent Quality and Research Productivity: Measuring Innovation with Multiple Indicators," Economic Journal, Royal Economic Society, vol. 114(495), pages 441-465, April.
    49. Li, Dan & Ferreira, Manuel Portugal, 2008. "Partner selection for international strategic alliances in emerging economies," Scandinavian Journal of Management, Elsevier, vol. 24(4), pages 308-319, December.
    50. Drogendijk, Rian & Slangen, Arjen, 2006. "Hofstede, Schwartz, or managerial perceptions? The effects of different cultural distance measures on establishment mode choices by multinational enterprises," International Business Review, Elsevier, vol. 15(4), pages 361-380, August.
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