Gambardella, Alfonso; Harhoff, Dietmar; Verspagen, Bart - C.E.P.R. Discussion Papers - 2013
Patent holders may choose to protect innovations with single patents or to develop portfolios of multiple, related … number of related patents or investing in higher value of patents in the portfolio. We estimate the derived value equation … of inventions in a portfolio may reflect both genuine creation of value or stronger appropriability via patents. …