The commercial law covers the broader area such as intellectual property, contract issues. The contract type of issues covers a long period of time. So for consulting these types of issues, commercial and corporate lawyers will help you on the same. The corporate laws are used for the company i.e., starting from the creation of the company till the end, the law covers the issues. The difference between the commercial and corporate law is that, in commercial laws it covers for a infinite period of time. And in corporate laws, the time period depends on the company. It may be a short period or a long period.