Prior to writing claim answer these questions: • What is the invention? • What are the pieces and parts that make up the invention?The specification, including the abstract and claims, must have lines that are 1.5 or doublespaced in a single column of text. In this video we're going to go ahead and create a patent writing template. First, every patent claim needs a preamble, which is the introductory phrase in a claim. Second, every patent claim needs a transition. Describe The Format Of A Patent Application. When it comes to filing a patent application, the goal is simple – to clearly explain the patent examiner what your invention is and how it can be used. Patent drafting is the stage where your invention disclosure and patentability search report would prove very helpful in writing a good patent application. Patent Claim Format.