In this study, the market value of intangible assets of companies that acquired shares from 2011 to 2019 was measured through three models(OIV_ts, OIV_tc, OIV_sc) using transaction price, market capitalization, and book value. Also, the OIV_sc of all listed companies was calculated for comparison purposes. As a result of the analysis, it was found that the degree of recognition of intangible assets was discriminated according to the purpose and target of the equity acquisition, and the kinds of investment. This phenomenon suggests that if more faithful to the recognition and evaluation of intangible assets, it would have made it possible to provide more relevant and meaningful information for corporate valuation. And, the size of the OIV_sc by year ranged from 0.8093 to 9.1730, and it has increased with the recent year. This is analyzed that management activities are appropriately transformed in knowledge economy environment. These research results can be provided as data to improve awareness of intangible assets, financial and accounting reporting system. And the three model and concept of measuring the market value of intangible assets used in this study is expected to be used as a useful tool for research in the field of intangible assets.