Purpose-There exist a large variety of sources on the definition or application process of the IP Valuation methods in literature, but there is still room for research for applications, related cases and preference criteria of each method as the theoretical and practical publications are very limited. Before starting IP valuation process there are some fundamental prerequisite steps such as setting the purpose of valuation, acquiring deep knowledge about the IP technology being valued, definition of the type of the process of patent application, defining TRL of IP and identifying the available data. To fulfil the gap of knowledge, the main aim of this study is to provide a case study for developing country context by exploring the current practices of patent valuation methods and determining the applicability, usefulness, challenges, necessities and advantages of IP valuation methods in IP ecosystems of technology. Methodology-Within a qualitative research methodology which utilized the experiences of the IP valuation experts and professionals in technology transfer ecosystem in Turkey, Europe and USA, data were collected through structured in-depth interviews and Delphi Survey about level of expert knowledge, level of usage for different quantitative IP valuation methods, the purpose of using different IP valuation methods, challenges or benefits of applying the methods in patent valuation. Findings-Findings revealed that replacement cost, reproduction cost, sales comparison, DCF, the 25 percent rule, comparable profit margin and RFR methods are widely preferred and known IP valuation methods which are priorly expressed by the respondent experts of this study. Advanced valuation methods are much rarely known and used when compared to previously stated methods. In order to make effective and well-supported estimates of an IP value, more than one valuation method which can be selected according to the objectives and different situations and qualitative parameters should be considered because of their indirect effect to the valuation. Conclusion-The findings of this study show the whole necessities/inputs to apply valuation method in line with the literature. When an IP is valued, qualitative parameters should be considered because of their indirect affect to the valuation. In order to make effective and wellsupported estimates of an IP value, more than one valuation method which can be selected according to the objectives and different situations and qualitative parameters should be considered because of their indirect effect to the valuation. This study is expected to help valuers that are in need of choosing most suitable valuation method for their IPs.

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