On February 2, 2026, U.S. patent holding company AX Wireless LLC simultaneously filed patent infringement lawsuits in federal courts across the Eastern District of Texas, the Central District of California, and the Northern District of Illinois. The lawsuits accuse four prominent networking equipment manufacturers—ASUSTek, D-Link, TP-Link, and Ubiquiti—of infringing five WiFi-related patents held by AX Wireless. (Case Nos.: 2:26-cv-00086; 8:26-cv-00252; 8:26-cv-00251; 1:26-cv-01174)

AX Wireless LLC focuses its core business on wireless communication technology R&D, specializing in key technologies such as OFDM (Orthogonal Frequency Division Multiplexing) systems, PPDU (Physical Protocol Data Unit) transmission, and wireless communication protocol optimization. Its patents cover critical wireless communication technologies including header repetition techniques and PDCCH transmission methods, widely applied in modern wireless communication systems like 5G.

According to public filings, AX Wireless LLC alleges that the defendants infringed five of its patents, including:

US 10,079,707 B1: Describes a receiver method and apparatus for wireless OFDM networks supporting variable header repetition

US 10,917,272 B2: Covers a non-transitory computer-readable storage medium for implementing the aforementioned receiver method

US 11,646,927 B2: Proposes a header repetition method in packet-based OFDM systems

US 11,777,776 B2: Continuation patent for the above method, further refining technical implementation

US 12,063,134 B2: Further continuation patent, expanding application scenarios for the header repetition mechanism

All cases are currently in the initial examination stage, with no public response yet from the four defendants.