Oil and gas leases expire after a certain time period if production is not obtained in paying quantities. (law.stackexchange.com)
These contracts usually expire after a certain time period, usually 12 months, and are not mandatory to have in order to be issued a mortgage. (investopedia.com)
If you provide stickers after a certain time frame, such as after 10 minutes of playing nicely, be prompt when giving the reward. (verywellfamily.com)