[header] How to defend against online trademark disputes [title] Read the letter. [step] A cease and desist letter is sent through the mail, or as an email, and states or suggests that you are infringing on someone else's trademark and that you need to stop. If you receive one of these letters, take it seriously. 
The letter should spell out how the individual or company thinks you are infringing on their trademark and it should request a response. [substeps] The cease and desist letter is almost always a precursor to litigation.