Length of the application process
How Long Does it Take for a Mark to be Registered?
It is difficult to predict how long it will take for an application to mature into a registration, because so many factors can affect the process. Generally, an applicant will receive a filing receipt almost instantly if filing from the Trademark Electronic Application System (TEAS), or approximately two weeks after filing on paper. The filing receipt will include the serial number of the application. All future correspondence with the USPTO must include this serial number. You should receive a response from the Office within approximately three months from filing the application.
However, the total time for an application to be processed may be anywhere from almost a year to several years, depending on the basis for filing and the legal issues that may arise in the examination of the application. Current status information on trademark applications and registrations may be obtained through the Trademark Applications and Registrations Retrieval (TARR) database at http://tarr.uspto.gov/.