What is the fine-grained topic of the following text: This trial was set to begin on October 9, 2018, but a settlement was reached on October 2, 2018, and was signed off on October 4, 2018, on a deal that prohibits the three-day film festival once called “Filmchella” from using marks that might be confusingly similar to the popular Coachella music festival. Only return the topic.
Settlement Prohibiting "Filmchella" from Using Similar Marks to Coachella Music Festival