Patent law is bogged down in the minutia of claims construction. Claim construction is central to every patent dispute, but it has not provided the hoped-for certainty or notice to competitors. Quite the contrary: disputes about the importance of inventions and the scope of patents have been...

Internet intermediaries - service providers, Web hosting companies, Internet backbone providers, online marketplaces, and search engines - process hundreds of millions of data transfers every day, and host or link to literally tens of billions of items of third party content. Some of this...

In this paper, we show that there are important differences across patent examiners at the U.S. Patent and Trademark Office. We show that more experienced examiners cite less prior art, are more likely to grant patents, and are more likely to grant patents without any rejections. These results...

How can we allow patent examiners to effectively distinguish between patentable and unpatentable inventions, without slowing the process to a crawl or wasting a bunch of money? This essay reviews the recent literature and considers a number of proposals and their limitations. It concludes that...

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...

Executive SummaryHow can we allow patent examiners to effectively distinguish between patentable and unpatentable inventions without slowing the process to a crawl or wasting a bunch of money? This essay reviews the recent literature and considers a number of proposals and their limitations. It...