Provisional patent specification drafting services are usually availed by clients when the invention is still not complete and the inventor(s) what to secure the progress they have made so far. Upon drafting and filing a provisional application, a complete patent application (also called a non-provisional application in the US) has to be drafted and filed within 12 months of the filing date of the provisional application. A provisional application is not examined during the prosecution phase and is published with the non-provisional application, only if the corresponding non-provisional application was filed within the 12 months period.