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This paper presents a method of using citation categories as a patent value determinant. The method is used to analyze the patent portfolios of players in the European wind power market. Patent data for the case firms is obtained from European Patent Office's (EPO) worldwide PATSTAT database. Measure of hindrance and measure of encroachment are defined as a way of assessing competitor patent portfolios...
Predicting the success of emerging industries is difficult due to the uncertain response of markets and mixed nature of technological signals. In order to ensure success, firms attempt to block competitors through patents or achieve standardization of their technologies. This paper uses Data Envelopment Analysis to measure the efficiency of patent portfolios held by firms in the wind power market...
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