Trademark Overview
On Thursday, October 23, 2025, a trademark application was filed for MAMMOTH TRAILFEST with the United States Patent and Trademark Office. The USPTO has given the MAMMOTH TRAILFEST trademark a serial number of 99458812. The federal status of this trademark filing is NEW APPLICATION - ASSIGNED TO EXAMINER as of Tuesday, March 10, 2026. This trademark is owned by Eastern Sierra Running, LLC. The MAMMOTH TRAILFEST trademark is filed in the Clothing & Apparel Products and Education & Entertainment Services categories with the following description:
(Based on Use) Conducting running races; Organizing festivals in the field of running, trail running, ultra running, and outdoor sports for cultural or entertainment purposes; (Based on Intent to Use) Coaching in the field of sports; Coaching in the field of hiking, running, trail running, and ultra running; Conducting guided tours by foot, namely hiking, running, trail running, and ultra running tours; Conducting guided tours of the outdoors; Providing recreational sports, hiking, running, trail running, and ultra running camps; Providing classes, workshops, seminars and camps in the field of sports, hiking, running, trail running, and ultra running; Sports camp services
(Based on Use) Headwear; Socks; Pullovers; Tops as clothing; Anoraks; Tee shirts; Clothing jackets; Coats
