Research on intellectual property has focused on formal legally recorded rights that we call deeded, most often measured by granted patents. Meanwhile, other "defacto" IP (mainly purposive secrecy and natural excludability) has become more important because of the increasing closeness of...

Scientists who make breakthrough discoveries can receive above- normal returns to their intellectual capital, with returns depending on the degree of natural excludability - that is, whether necessary techniques can be learned through written reports or instead require hands-on experience with...