We survey the economics literature on optimal patent design. We first outline the patent right and the basic economic effects of the patent on innovation. Models that use frictions instead of patents to generate rewards to innovation and models of trade secrecy are considered briefly. The patent...

Technological change is transforming media industries. Digitization lowers the cost of recording, storage, reproduction and distribution, while computer-based editing facilitates higher quality and special effects. With electronic distribution, a vast range of content can be made available to...