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Licensing of complementary technologies and enforcement of intellectual property rights Shinkai, Tetsuya Tanaka, Satoru Okamura, Makoto Tabata, Ken In this paper, we examine the effect of enforcement of IPR on the equilibrium outcome and welfare through unilateral and cross licensing decisions between duopolistic firms with patents of two complementary technologies. We find the conditions on both the imitation cost of the infringer and probability of the accuser firm winning the lawsuit under that a unilateral licensing / a cross licensing may be contracted between them, and efficient social surplus of duopoly realizes. application/pdf Institute for foreign studies Kobe city university of foreign studies 2006-06-08 eng research report VoR https://kobe-cufs.repo.nii.ac.jp/records/1217 Kobe city university of foreign studies working paper series 19 1 11 https://kobe-cufs.repo.nii.ac.jp/record/1217/files/WPS19.pdf application/pdf 2.0 MB 2006-06-08