Restraint of trade
Overview
 
Restraint of trade is a common law
Common law
Common law is law developed by judges through decisions of courts and similar tribunals rather than through legislative statutes or executive branch action...

 doctrine relating to the enforceability of contractual restrictions on freedom to conduct business. In an old leading case of Mitchell v Reynolds (1711) Lord Smith LC said,

"it is the privilege of a trader in a free country, in all matters not contrary to law, to regulate his own mode of carrying it on according to his own discretion and choice.
 
x
OK