In the course of examining a trademark application, the Examining Attorney may identify issues that preclude registration of your mark. They may be substantive (i.e., there is a fundamental flaw with the trademark you wish to register) or procedural (i.e., there was a problem with your application). Any issues the Examining Attorney identifies will be described in an "Office Action," to which you must respond within six (6) months of receipt.
When Status Code 640 is triggered, the Examining Attorney has identified issues with the application that, unless corrected, will preclude registration of your trademark. However, at this point, the Office Action has not been mailed to you. For more information on the process of responding to Office Actions, visit: