This paper surveys the major changes in patent policy and practice that have occurred in the last two decades in the U … effects of changes in patent policy. Despite the significance of the policy changes and the wide availability of detailed data … patent policy are few. Possible reasons for these limited results are discussed, and possible avenues for future research are …

The paper investigates whether patent fees are an effective mechanism to deter the filing of low-quality patent … applications. The study analyzes the effect on patent quality of the Patent Law Amendment Act of 1982, which resulted in a … substantial increase in patenting fees at the U.S. Patent and Trademark Office. Results from a series of difference …

expenditures, and aggregate patent applications. This data set is to be used in a larger study of R&D, inventive output and …, with a decreasing propensity to patent with size of R&D programs throughout the sample. However, this conclusion is highly … variables bias due to our focus on R&D and patent applications in a single year is far worse for the small firms …