Patent drafting is a process of writing a detailed application comprising patent description and claims. It is the very first step for patenting your invention.Once the patent agent understands the invention, then he can begin preparing the patent application. – Prepare draft claims for the invention as the first step. Say what you mean and mean what you say. Good advice in life, but absolutely critical advice when dealing with patents and patent applications! Patent drafting is the stage where your invention disclosure and patentability search report would prove very helpful in writing a good patent application. This page provides information on the types of patents and types of patent applications, and the examination process. A patent application has 9 different sections. Let's discuss how to write each section.