Motorola Radio's Chirp Can't Be Trademarked: USPTO

Law360, New York (March 18, 2008, 12:00 AM EDT) -- Motorola Inc.'s attempt to trademark a sound made by its two-way radios has been turned back by the U.S. Patent and Trademark Office, which agreed with arguments made by Motorola's competitor Nextel Communications Inc. that the sound does not function as a mark.

Motorola filed an application to register the 911 Hz sound, described as an “electronic chirp,” made by two-way radios used by law enforcement, police and emergency responders. The company claimed that the sound was developed in 1983 and had been effectively used as...
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