This page provides information on the types of patents and types of patent applications, and the examination process. The purpose of this guide is to provide you with basic information about filing a utility patent application with the USPTO.Explore a complete guide to filing utility patent applications online. USPTO is responsible for examining patent applications and issuing patents. 2001 takes the place of the publication of the European patent application. Let me walk you through an overview of the patent application process so you can begin to get your ducks in a row. This guide will truly show you how to write a patent application and submit it to the USPTO to attain thtraat allimportant Patent Pending status.