A license to Trend Micro software usually includes the right to product updates, pattern file updates, and basic technical support ("Maintenance") for only one (1) year from the date of purchase. After the first year, renew maintenance on an annual basis at Trend Micro's then-current Maintenance fees.
A Maintenance Agreement is a contract between your organization and Trend Micro, regarding your right to receive technical support and product updates in consideration for the payment of applicable fees. When you purchase a Trend Micro product, the License Agreement you receive with the product describes the terms of the Maintenance Agreement for that product.
Note: The Maintenance Agreement expires. Your License Agreement does not. If the Maintenance Agreement expires, scanning can still occur, but you will not be able to update components or program files (even manually). Nor will you be entitled to receive technical support from Trend Micro.
You can update your Maintenance Agreement by purchasing renewal maintenance from your reseller, Trend Micro sales, or on the Trend Micro Online Registration URL:
https://olr.trendmicro.com/registration/