| Contents | 6 |
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| List of Figures and Tables | 10 |
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| List of Abbreviations | 13 |
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| 1 Introduction | 14 |
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| 1.1 Problem Statement | 14 |
| 1.2 Structure of the Dissertation | 17 |
| 2 Conceptual Basis and Status Quo of Research | 19 |
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| 2.1 Definition of Corporate Open Innovation Initiatives | 19 |
| 2.2 Theoretical Framework | 19 |
| 19 | 19 |
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| 2.2.1 Literature Review | 19 |
| 2.2.1.1 Strategic Theory of the Firm | 20 |
| 2.2.1.1.1 Resource-Based View | 20 |
| 2.2.1.2 Open Innovation | 21 |
| 2.2.1.3 Corporate Venturing | 22 |
| 2.2.1.4 Corporate Entrepreneurship | 23 |
| 2.2.1.5 Radical Innovation | 24 |
| 2.2.1.6 Management Fashion | 24 |
| 2.2.1.7 Incubator Literature Stream | 25 |
| 2.2.1.8 Science Park Literature Stream | 26 |
| 2.3 Research Gap | 27 |
| 2.4 Research Questions | 33 |
| 2.5 Research Approach | 34 |
| 3 Taxonomy Development | 36 |
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| 3.1 Corporate Business Lab | 36 |
| 3.2 Corporate Business Incubator | 37 |
| 3.3 Corporate Business Accelerator | 39 |
| 3.4 Corporate Venture Capital | 41 |
| 3.5 Corporate Business Hub | 44 |
| 3.6 Clustering Taxonomy Matrix for Corporate Open Innovation | 45 |
| 4 Test for Validity of the Taxonomy Matrix Within the German Market | 49 |
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| 4.1 Corporate Open Innovation Initiatives Among Germany’s Biggest Companies | 49 |
| 4.2 Application of the Taxonomy for the Identified Initiatives | 51 |
| 4.3 Evaluation of Results | 55 |
| 5 Managing Corporate Open Innovation Initiatives: An Explorative Case Study Approach within the German Market | 68 |
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| 5.1 Case Study Design | 68 |
| 5.2 Derivation of Questionnaire Questions | 69 |
| 5.3 Selection of Interview Partners | 89 |
| 5.3.1 Corporate Business Labs | 91 |
| 5.3.1.1 Burda Bootcamp by Hubert Burda Media Holding GmbH | 91 |
| 91 | 91 |
| 5.3.1.2 WATTx GmbH by Viessmann Werke GmbH | 91 |
| 91 | 91 |
| 5.3.1.3 Corporate Business Lab of a Stock-listed Bank from Germany | 92 |
| 5.3.2 Corporate Business Incubators | 92 |
| 5.3.2.1 Corporate Business Incubator of a Stock-listed Bank from Germany | 93 |
| 5.3.2.2 Incubator of a Stock-listed Telecommunication Company from Germany | 93 |
| 5.3.3 Corporate Business Accelerators | 93 |
| 5.3.3.1 ProSiebenSat.1 Accelerator GmbH by ProSiebenSat.1 Media SE | 94 |
| 5.3.3.2 Metro Accelerator by Metro AG | 94 |
| 5.3.4 Corporate Venture Capitalists | 94 |
| 5.3.4.1 SevenVentures GmbH by ProSiebenSat.1 Media SE | 95 |
| 5.3.4.2 TRUMPF Venture GmbH by Trumpf GmbH | 95 |
| 95 | 95 |
| 5.3.5 Corporate Business Hubs | 96 |
| 5.3.5.1 Corporate Business Hub of a Stock-listed Industrial Manufacturing Conglomerate Company from Germany | 96 |
| 5.3.5.2 Corporate Business Hub of a Stock-listed Aviation Transport and Logistics Company from Germany | 97 |
| 5.3.5.3 Corporate Business Hub of a Stock-listed Energy Production and Distribution Company from Germany | 97 |
| 5.3.5.4 Corporate Business Hub of a Stock-listed Specialty Chemicals Production Company from Germany | 98 |
| 5.4 Evaluation Methods | 98 |
| 5.5 Case Study Results: Derivation of Assumptions | 100 |
| 5.5.1 Corporate Business Labs | 100 |
| 5.5.1.1 Incumbent’s Motivation | 100 |
| 5.5.1.2 Location | 100 |
| 104 | 100 |
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| 5.5.1.3 Venture Target Selection | 110 |
| 5.5.1.4 Investment Period | 115 |
| 5.5.1.5 Financing Strategies | 120 |
| 5.5.1.6 Management’s Best Practices | 124 |
| 5.5.2 Corporate Business Incubators | 132 |
| 5.5.2.1 Incumbent’s Motivation | 132 |
| 5.5.2.2 Location | 132 |
| 135 | 132 |
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| 5.5.2.3 Venture Target Selection | 139 |
| 5.5.2.4 Investment Period | 142 |
| 5.5.2.5 Financing Strategies | 145 |
| 5.5.2.6 Management’s Best Practices | 149 |
| 5.5.3 Corporate Business Accelerators | 153 |
| 5.5.3.1 Incumbent’s Motivation | 153 |
| 5.5.3.2 Location | 153 |
| 157 | 153 |
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| 5.5.3.3 Venture Target Selection | 162 |
| 5.5.3.4 Investment Period | 166 |
| 5.5.3.5 Financing Strategies | 170 |
| 5.5.3.6 Management’s Best Practices | 174 |
| 5.5.4 Corporate Venture Capitalists | 180 |
| 5.5.4.1 Incumbent’s Motivation | 180 |
| 5.5.4.2 Location | 180 |
| 184 | 180 |
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| 5.5.4.3 Venture Target Selection | 187 |
| 5.5.4.4 Investment Period | 191 |
| 5.5.4.5 Financing Strategies | 195 |
| 5.5.4.6 Management’s Best Practices | 199 |
| 5.5.5 Corporate Business Hubs | 203 |
| 5.5.5.1 Incumbent’s Motivation | 203 |
| 5.5.5.2 Location | 203 |
| 210 | 203 |
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| 5.5.5.3 Venture Target Selection | 215 |
| 5.5.5.4 Investment Period | 220 |
| 5.5.5.5 Financing Strategies | 224 |
| 5.5.5.6 Management’s Best Practices | 228 |
| 5.5.6 Concluding Frameworks | 228 |
| 236 | 228 |
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| 6 Development of Taxonomy Management Framework for Corporate Open Innovation Initiatives | 244 |
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| 6.1 External Environment | 244 |
| 6.2 Open Innovation Environment | 246 |
| 6.3 Taxonomy Framework for Corporate Open Innovation Initiatives | 249 |
| 7 Conclusion | 253 |
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| 7.1 Common Managerial | 253 |
| 253 | 253 |
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| 7.2 Limitations | 253 |
| 256 | 253 |
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| 7.3 Directions of Future Research | 258 |
| Reference List | 260 |
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| Appendix | 273 |