Another International Semiconductor Group Wi-Fi 6 patent challenge instituted

On November 10, 2025, five weeks after Unified filed an ex parte reexamination, the Central Reexamination Unit (CRU) granted Unified’s request, finding substantial new questions of patentability on the challenged claims of U.S. Patent 11,641,670, owned and asserted by the International Semiconductor Group, an NPE. The '670 patent is directed to access points (APs) that are configured to use information that associates MAC addresses for terminals with association identifiers (AIDs) that are locally allocated to the terminals by the AP. The goal of this is to create a smaller list of AID-assigned terminals that is faster to search, and which allows the AP to respond quicker to the associated terminals. The '670 patent is one of over 20 patents divested from Toshiba in April this year and belongs to one of the largest families in that transfer. The '670 patent is challenged as part of Unified’s SEP Wi-Fi zone.

View ITC litigations by ISG. Unified is represented by Stephen Cortiaus and Payam Rashidi at Slater Matsil, and by in-house counsel, Jessica L.A. Marks and Vinu Raj, in this proceeding.

To view the reexamination request, visit Unified’s Portal: https://portal.unifiedpatents.com/exparte/90015567

DynaIP entity, Random Chat, chat patent challenge instituted

On November 13, 2025, five weeks after Unified filed an ex parte reexamination, the Central Reexamination Unit (CRU) granted Unified’s request, finding substantial new questions of patentability on the challenged claims of U.S. Patent 8,402,099, owned and asserted by Random Chat LLC, an NPE and entity of Dynamic IP Deals LLC (d/b/a DynaIP). The '099 patent is generally related to a method for setting up multimedia connections between users. It has been asserted against 30 defendants, 11 of whom are still in suit including Samsung, LG, Zebra Technologies, and others.

View district court litigations by Random Chat. Unified is represented by in-house counsel, Vinu Raj and Jessica L.A. Marks, in this proceeding.

To view the reexamination request, visit Unified’s Portal: https://portal.unifiedpatents.com/exparte/90015572

IPVal entity Artax navigation patent found invalid

On November 5, 2025, the Central Reexamination Unit (CRU) entered a notice of intent to issue a reexamination certificate cancelling all challenged claims (1-4) of U.S. Patent 8,169,343, owned by Artax LLC, an NPE and entity of IP Valuation Partners, LLC. The ’343 patent relates to advancements in navigational technology focusing on integrating both spatial and non-spatial information for mobile computing devices, such as laptops and smartphones. It has been asserted against Verizon, Mix Telematics, Samsara, and TomTom.

View district court litigations by Artax. Unified is represented by in-house counsel, Andrea Shoffstall and Roshan Mansinghani.

To view the reexamination request, visit Unified’s Portal: https://portal.unifiedpatents.com/exparte/90019759

Mimzi voice interaction patent challenged

On October 29, 2025, Unified Patents filed an ex parte reexamination proceeding against U.S. Patent 9,792,361, owned and asserted by Mimzi, LLC, an NPE. The ’361 patent relates to using a phone to record phone calls, meetings, and dictation, and to store associated metadata, audio, and/or speech-recognized text in a centralized, content-searchable repository. It has been asserted against Nissan, Ford, Hyundai, Mercedes-Benz AG, Honda, and Subaru.

View district court litigations by Mimzi. Unified is represented by in-house counsel, Kyla Butler and Alyssa Holtslander, in this proceeding.

ISG Wi-Fi 6 patent challenged

On October 29, 2025, Unified Patents filed an ex parte reexamination proceeding against U.S. Patent 11,363,595, owned by the International Semiconductor Group, an NPE. The '595 patent is generally directed to transmitting a first frame on a first channel that identifies a second channel that can be used, and then receiving frames via both channels. This is particularly relevant to Wi-Fi devices that can operate in two frequency channels or bands, i.e., the 2.4 and 5 GHz bands. This filing marks the tenth patent challenged in Unified’s recently created SEP Wi-Fi zone.

View ITC litigations by ISG. Unified is represented by Michael Jones and Jake Rosvold of Rothwell Figg, and by in-house counsel, Jessica L.A. Marks and David Seastrunk, in this proceeding.