Timely general informative support...

If you file on the basis of "intent to use", before obtaining a registration certificate, you have to proof to the U.S.P.T.O. that you are using the mark in commerce, and file an Allegation of Use, that is a sworn statement attesting the you are using the mark in commerce.
If you cannot file a Statement of use within 6 months from the Notice of Allowance because you are still not using the mark in commerce, you must file a Request for an Extension of Time to File a Statement of Use accompanied by a $150 filing fee.
Therefore, if you file on the basis of "intent to use" we keep you updated via email about such requirements and the ways and the right times to fulfill them.

You also have to know that "rights in a federally-registered trademark can last indefinitely so long as the owner continues to use the mark to identify its goods or services and files all necessary documentation in the United States Patent and Trademark Office."(*)

By periodically emailing you general information about what to do, and when to act to maintain your trademark alive, you will avoid to loose your valuable intellectual property investment.

Below is a description of the documents to file and the dates to file them to keep your trademark alive. 

Documents to File

In order to keep a registration alive, the owner of the registration must file, at appropriate times,

  1. an affidavit or declaration of continued use or excusable nonuse under Section 8 of the Trademark Act (also known as a Section 8 Declaration); and
  2. an application for renewal under Section 9 of the Trademark Act (also known as a Section 9 Renewal) In addition, the owner of a registration on the Principal Register may file a Declaration of Incontestability under Section 15 (Section 15 Declaration) of the Trademark Act.

Time Period for Filing Documents

Between the 5th and 6th year after registration the owner must file a Declaration of Continued Use or Excusable Nonuse, (also known as a Section 8 Declaration). Failure to file the Section 8 Declaration results in the cancellation of the registration. (There is a 6-month grace period.)

After 5 consecutive years of continuous use in commerce following registration the owner may file, but is not required to file, a Declaration of Incontestability under Section 15 of the Trademark Act if, among other things, the mark is registered on the Principal Register.

Between the 9th and 10th year after registration, and every 10 years thereafter (for registrations issued or renewed on or after November 16, 1989) the owner must file a Section 8 Declaration and an Application for Renewal under Section 9 of the Trademark Act. Failure to file these documents results in the cancellation and expiration of the registration. (There is a 6-month grace period.)"(*)

* Excerpt from the USPTO official web site.
This site is not affiliated with the USPTO.