Utah Mammoth Files Federal Trademark Lawsuit Against Mammoth Hockey

The NHL's Utah Mammoth, owned by Smith Entertainment Group, has filed a federal lawsuit against Mammoth Hockey, an Oregon-based hockey equipment bag manufacturer, over a trademark dispute concerning the use of the "Mammoth" name. The Utah Mammoth, who rebranded from the Utah Hockey Club after relocating from Arizona, announced their new name and mammoth-themed logo in May 2025. Mammoth Hockey sent a cease-and-desist letter arguing that the team's use of the name could confuse customers and harm their business, requesting the team to stop using the name and surrender unsold merchandise. However, Smith Entertainment Group contends it owns all trademarks related to the name and that the team's use will not harm Mammoth Hockey's business. Mammoth Hockey, which has been selling hockey bags since 2014 but holds no active federal trademarks, plans to vigorously defend its common law rights. The dispute follows a similar trademark challenge the team faced when attempting to adopt the "Utah Yeti" name, and both parties are seeking resolution through the courts.