We make every effort to have the Trademark Electronic Application System (TEAS) available 24 hours a day, seven days a week. However, while TEAS is almost always available, credit card payments cannot be made from 2 a.m. to 6 a.m. on Sundays (although you can create a form during that period and save it for later use).
The site is sometimes down for scheduled maintenance, for which the USPTO generally posts advance notice. We recommend that you check the Current Server Status and Planned Outages page before beginning the filing process. Sometimes the site is also down unexpectedly. Although we try to restore service as soon as possible, this does not always happen as quickly as we would hope. Because of the possibility of an unforeseen problem (such as site downtime or Internet connectivity issues), we encourage you to plan ahead and not wait until the last minute to file time-sensitive forms electronically with the USPTO.
All forms filed via TEAS are time/date stamped when received on the USPTO server, according to Eastern Standard Time (EST) and EST controls for purposes of determining the timeliness of a document. Any submission that arrives as of 11:59 p.m. EST will be given that day’s filing date (i.e., regardless of the USPTO’s “normal” business hours).
If your deadline is today and the document cannot be filed via TEAS due to an outage, you must use an alternative method of filing to ensure that the document is timely received in the USPTO. A deadline that falls on a Saturday, Sunday or federal holiday within the District of Columbia extends the due date to the next succeeding day that is not a Saturday, Sunday, or federal holiday. 37 C.F.R. §2.196. See TMEP §308.