The software itself does not expire. You can continue to use the software forever. However, the maintenance package expires after one year. The maintenance package includes online support for problems, techniques, configuration and general usage of the software. Also, all upgrades (on average, one per month) are provided free of charge during this time. Upgrades, in general, cover both bug fixes as well as enhancements which are usually requested by our users. The maintenance package can be extended for one or more years as long as it is done BEFORE it expires.