US 9,491,542 K1 (4,512th)
	Automatic sound pass-through method and system for earphones
John Usher
Assigned to STATON TECHIYA LLC
Trial No. IPR2022-00253, Dec. 17, 2021
Inter Partes Review Certificate for Patent 9,491,542, issued Nov. 8, 2016, Appl. No. 14/600,349, Jan. 20, 2015
Inter Partes Review Certificate issued Sep. 2, 2026