To Renew a Trademark:
Visit the online filing portal at https://biz.sosmt.gov/
Sign in to the site with your username and password. (If you don’t have an account, click the login button and you’ll see where you can create one.)
Use the Trademark search to look up the existing trademark record, either by name or ID number.
Be sure the top menu on the search screen is highlighted as "Trademark" and not Business.
In search results, click on the mark name to open the record.
Click on Filing Actions on the right to find and file the mark renewal.
The renewal will require a specimen of the mark showing it in use as stated in the original filing (ex., advertisements, website, products).
Pay with a credit/debit card or an e-check when submitting the filing.
When the renewal is approved, the system will send you an email. That email will also give you instructions on how to log in to your account and download your confirmation documents.