It is important to note that there is a significant difference between a cease and desist letter and a cease and desist order.
A cease and desist letter can be written by anyone and sent to anyone else. The letter can demand that certain activities must stop or legal action may be considered. There is no force of law behind a cease and desist letter, however, so the recipient of the letter is free to ignore the demand that is made (albeit with some risk that a legal action might eventually follow).
A cease and desist order, on the other hand, is issued by a court. The order cannot be ignored without repercussion. If the subject of the order does not cease whatever it is they have been ordered not to do, there can be a contempt of court finding. Jail time is a possibility when one ignores a court order. Unlike a cease and desist letter, a cease and desist order will not be issued by a court to just anyone.