U.S. federal trademark · Serial No. 77936182
Delivery of a ringtone, which can be monophonic (having only a single melodic line), polyphonic (having both melody and harmony), or a mastertone (a digital sound recording or excerpt thereof), made available for use on a cellular telephone or similar device
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.