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We look the probability of the accuser firm winning the lawsuit as a measure of the extent of enforcement of intellectual property rights. Under the assumption that the extent of enforcement of intellectual property rights is relatively strong, we show that inefficient social surplus of monopoly realizes when the litigation cost of the infringer firm is relatively smaller than that of the accuser firm, although social surplus of duopoly realizes when both the litigation costs of the infringer firm and of the accuser firm take are not so high.", "subitem_description_type": "Abstract"}]}, "item_4_full_name_3": {"attribute_name": "\u8457\u8005\u5225\u540d", "attribute_value_mlt": [{"nameIdentifiers": [{"nameIdentifier": "107822", "nameIdentifierScheme": "WEKO"}], "names": [{"name": "Shinkai, Tetsuya"}]}, {"nameIdentifiers": [{"nameIdentifier": "107823", "nameIdentifierScheme": "WEKO"}], "names": [{"name": "Tanaka, Satoru"}]}]}, "item_4_publisher_20": {"attribute_name": "\u51fa\u7248\u8005", "attribute_value_mlt": [{"subitem_publisher": "\u6771\u4eac\u5927\u5b66\u793e\u4f1a\u79d1\u5b66\u7814\u7a76\u6240"}]}, 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