US 9,094,525 K2 (3,873rd)
Audio-video multi-participant conference systems using PSTN and internet networks
Thomas Dye; and Thomas Dundon
Assigned to MEETRIX IP, LLC
Trial No. IPR2023-00378, Dec. 16, 2022
Inter Partes Review Certificate for Patent 9,094,525, issued Jul. 28, 2015, Appl. No. 13/674,233, Nov. 12, 2012
Inter Partes Review Certificate issued Feb. 10, 2025