共 50 条
- [41] R&D investment and patent renewal decisions [J]. QUARTERLY REVIEW OF ECONOMICS AND FINANCE, 2018, 69 : 144 - 154
- [46] Unsuccessful patent application and cooperative R&D [J]. JOURNAL OF ECONOMICS, 2009, 97 (03) : 251 - 263
- [47] Patent protection with a cooperative R&D option [J]. ECONOMICS LETTERS, 2012, 116 (03) : 469 - 471
- [48] Multistage R&D competition and patent policy [J]. JOURNAL OF ECONOMICS-ZEITSCHRIFT FUR NATIONALOKONOMIE, 1998, 68 (02): : 153 - 173
- [49] The patent portfolio for strategic R&D planning [J]. INNOVATION IN TECHNOLOGY MANAGEMENT - THE KEY TO GLOBAL LEADERSHIP: THE KEY TO GLOBAL LEADERSHIP, 1997, : 491 - 496
- [50] R&D Investment, Patent Length, Uncertainty [J]. PROCEEDINGS OF THE 4TH INTERNATIONAL CONFERENCE ON PRODUCT INNOVATION MANAGEMENT, VOLS I AND II, 2009, : 461 - 472