It depends on the way the application was filed. It usually takes 10 months (269 days at the moment) after filing before an Examining Attorney looks at the file. She may accept the trademark as filed, or issue an office action rejecting the application, requiring clarification or modification of the application. Overall, the majority of trademarks register within about 14 months.
Intent to Use Applications
If the application requires a Statement of Use (filed on 1b intent to use rather than 1a in-use) then there is a delay between the allowance of the mark and the date teh applicant files the Statement of Use, plus the processing time for an Examiner to review. Filing 1b intent-to-use adds on average about 4 months to the application.
Office Actions
Office actions delay the application from the time of notification, to the time a response is filed. There is also a delay before the examiner reviews the response to the office action. The average delay to the application registration time where an office action occurs is about 4 months, and up to a year if the mark is suspended to await the outcome of another trademark application that is cited as similar.
TEAS Standard
TEAS Standard not only has a higher fee of $350 rather than $250, but it takes much longer to register. Usually the Examiner will object to any goods and services that are customized or not specific enough. There is the delay of responding to the office action, and often there is a lot of back and forth to get the goods/services ID right.
It's best to avoid delays since you can only really enforce the trademark once it is registered. That is why it's worthwhile to file TEAS PLUS, with the mark already in-use in commerce.
You can check the current processing wait times to find out how long your trademark filing could take. Filing your initial application, response form, and post registration accurately can speed up the process. You can help by reading these tips on avoiding processing delays.
Check the latest processing times.