Commercial law, also known as business law, is the body of law that applies to the rights, relations, and conduct of persons and businesses engaged in commerce, merchandising, trade, and sales. It is often considered to be a branch of civil law and deals with issues of both private law and public law.
When engaging an attorney, be sure to get someone who has experience with your particular need. Too many business owners engage "an attorney" without understanding that there are vast differences in skill sets and experiences of different lawyers.
In many situations, preventive legal advice could save you time, trouble and money by preventing legal problems before they arise. Take, for example, the purchase of your family home. You might have a problem in the future if you sign the purchase agreement without completely understanding it. Maybe you are launching a business with a partner. A lawyer could point out the advantages and drawbacks of various partnership arrangements.