作者：Choi, Jay Pil; Gerlach, Heiko
作者单位：Michigan State University; Yonsei University; University of Queensland
摘要：This paper develops a theory of patent portfolios in which firms accumulate an enormous amount of related patents, which makes it impractical to develop new products that avoid inadvertent infringement. We show that patent peace arises if product market competition is weak and patent portfolios are either sufficiently weak or sufficiently strong with comparable size. An increase in one firm's patent portfolio reduces the innovation incentives of its rivals but does not necessarily increase its...
