Purpose of a patent application filing is to get the patent for an invention / utility model that will be valid in the country / region of your interest and will grant patent protection according to national legislation. Ideally, patent application must pass through all stages of registration in the short period: pass the examination successfully without additional requests, followed by patent grant and payments of annuity fees until patent expires, or until client terminates the patent. While drafting the application, patent attorney should consider many factors to achieve this result.