The team at Unified IP Services used Pearl to successfully identify and chart prior art against U.S. Patent 9,235,259 and U.S. Patent 9,602,649, owned by K.Mizra LLC, an NPE. The ‘259 patent relates detecting short “tick” sounds in noisy audio using a two-stage process. The ‘649 patent relates to a device-proximity/event-matching method using synchronized sensor triggers and audio comparison. The patents has been asserted against Amazon.
The prior art was found and charted by Alejandro Borge and Oscar Jarquin of Unified IP Services and Elaine Chow of Unified Patents.
Identified Prior Art on U.S. Patent 9,235,259 (click to download chart)
Identified Prior Art on U.S. Patent 9,602,649 (click to download chart)