Innovative ideas are novel combinations of productive resources potentially addressing an economic need (Schumpeter, 1926). Even promising ideas can be unprofitable if the proposed combination fails on at least one dimension, e.g., it is technically unfeasible or does not respond to a genuine...

This paper is a study of licensing in a patent thicket. In a patent thicket licensing allows firms to avoid hold-up. It will have different effects on firms' R&D incentives depending on whether firms license existing or future patents. Building on a model of a patent portfolio race, firms'...

Licensing in a patent thicket allows firms to either avoid or resolve hold-up. Firms’ R&D incentives depend on whether they license ex ante or ex post. We develop a model of a patent portfolio race, which allows for endogenous R&D efforts, to study firms’ choice between ex ante and ex post...