The trademark application process can take anywhere from 10-12 months to multiple years, depending on if anything comes up during the review of your application.
Roughly 6 or 7 months after the application has been submitted, it gets assigned to an Examining Attorney at the USPTO. The Examining Attorney will review the application and search for previously filed applications and registrations that may be similar to yours. If there is an issue with the application, the Examining Attorney will issue an Office Action rejecting it, but you will have the opportunity to respond to it.
If there are no issues, or persuasive arguments were submitted changing the Examining Attorney’s mind, the trademark application would be approved for the next step, which is publication. This is a 30 day window where 3rd parties have the opportunity to challenge the mark if they feel they would be damaged by its registration.
Once the application clears the publication period with no oppositions, a trademark registration will issue a couple of months later.