A cease-and-desist letter is a letter demanding that the recipient refrain from a certain behavior or face legal action. Some types of behaviors that may prompt such letters include:[citation needed]
* Harassment by telephone by a collection agency or junk debt buyers
* Stalking or other forms of harassment
* Property, neighborhood, and boundary disputes
* Patent infringement, copyright infringement or trademark infringement
* Libel or slander
* Terms of service violation
In the case of property and boundary disputes, the letter demands that the recipient cease activity that negatively impacts their neighbors. Some examples include holding loud parties late at night, leaving a dog outside to bark all day, cutting down trees that stand on public or jointly owned land, or building a fence that infringes on someone else's property.