The Patent Box is a patent research site designed to help US patent attorneys and agents prosecute more effectively. The Patent Box offers deep insight into the patent process by providing a searchable database of US patent file wrapper documents (e.g. Office Actions and attorney arguments) along with features for visualizing, discussing and sharing these documents. Our database currently includes over 100,000 file histories. File history documents are originally created by the USPTO as unsearchable .pdf files. However, by applying optical character recognition (OCR) algorithms we are able to extract the text that drives our search engine. We support advanced search features including both proximity and boolean search operations. We also provide a visualization tool that allows search results to be explored on a 2-D graph. Our software products are available online at: www.thepatentbox.com