On October 7, 2025, six 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 10,820,233, owned and asserted by Wilus Institute of Standards & Technology, Inc., an entity of Good Day to Invent, Inc.
The '233 patent is generally directed to wireless terminals that receive an A-MPDU (aggregated MAC protocol data unit) that includes a MSDU (MAC service data unit) or A-MSDU (aggregated MSDU) from multiple users and transmits back a block ACK (block acknowledgement) to at least some of those users, where the block ACK has a particular format dictated by the numerous elements of the claims. It has been asserted against Askey Computer Corporation and its routers, which are Wi-Fi 6 (802.11ax) enabled devices.
View district court litigations by Wilus. Unified is represented by Michael Jones and Jake Rosvold of Rothwell Figg, 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/90015487