Patent law is crucial to encourage technological innovation. But as the patent system currently stands, diverse industries from pharmaceuticals to software to semiconductors are all governed by the same rules even though they innovate very differently. The result is a crisis in the patent...

In this paper, we show that there are important differences across patent examiners at the U.S. Patent and Trademark Office (USPTO), and that these relate to the most important decision made by the USPTO: whether or not to grant a patent. We find that more experienced examiners, and those who...

A growing chorus of voices is sounding a common refrain - the U.S. Patent and Trademark Office (PTO) is issuing far too many bad patents. These criticisms are complicated by the rather surprising fact that we don't actually know what percentage of patent applications actually issue as patents....

The United States Patent and Trademark Office is tasked with the job of reading patent applications and determining which ones qualify for patent protection. It is a Herculean task, and the Patent Office pursues it subject to enormous informational and budgetary constraints. Nonetheless, under...

Economists often assume that a patent gives its owner a well-defined legal right to exclude others from practicing the invention described in the patent. In practice, however, the rights afforded to patent holders are highly uncertain. Under patent law, a patent is no guarantee of exclusion but...