The patent process involves several steps: 1) a client discloses an invention to a law firm and receives an evaluation and written estimate; 2) if the estimate is approved, funds are deposited in a trust account; 3) the firm completes a patent application draft and invoices the client for the remaining balance; 4) the client approves the draft, submits additional documents, and pays the remaining balance; 5) the patent application is then filed with the US Patent and Trademark Office.