Innovation is commercialization of technology. Imperfections in markets for technology should leave marks on physical investments for innovation. Two types of transaction costs could affect innovative investments: royality stacking and hold-up threats. Backward references in firm's patent...

The economic value of upstream research outcomes has raised increasing attention. Not only are these outcomes central to the development of many innovations, but they are also the object of many transactions in technology. This note discusses a few representative papers that try to better...