They should last anywhere from 1 year to 5 years, depending on the importance of technology. For example, if it's a web related patent, like a "one-click paymen

They should last anywhere from 1 year to 5 years, depending on the importance of technology. For example, if it's a web related patent, like a "one-click payment system" it should only last a year. If it's a really important technology, in a slower industry, it could last up to 5 years. In the mobile industry, which is very fast paced, it should last only 2-3 years.