On 10 April 2026, Wilus filed a lawsuit against router manufacturer TP-Link in the United States District Court for the Eastern District of Texas, alleging infringement of four Wi-Fi 6 standard-essential patents (Case No.: 2:26-cv-00290-JRG).

Founded in 2012 and headquartered in South Korea, Wilus is an independent research and development laboratory dedicated to driving innovation in wireless communications and multimedia technologies. It holds over 3,500 global patents covering key technologies such as Wi-Fi 6, Wi-Fi 7, 5G NR and LTE-Advanced Pro.

According to the publicly filed complaint, the patents in question primarily include US 10,651,992, US 11,128,421 and US 10,821,0233. These relate to methods for ensuring the backward compatibility and operational efficiency of wireless networks and are core patents indispensable to the implementation of the IEEE 802.11ax standard. In its statement of claim, Wilus alleges that TP-Link’s manufacture, use, sale and importation into the United States of Wi-Fi 6 (IEEE 802.11ax) routers and related products fall within the scope of its patent protection. The statement claims that Wilus had previously sent a letter to TP-Link requesting negotiations regarding a FRAND licence for the patents in question, but that TP-Link refused.

Having received the notice, TP-Link continued to infringe the patent despite being fully aware of its existence, constituting wilful infringement. On this basis, Wilus has filed a claim with the court, seeking an order requiring TP-Link to immediately cease the infringing activities, as well as claiming corresponding damages and enhanced damages for wilful infringement, whilst also applying for a preliminary and permanent injunction.

To date, TP-Link has not issued a public response. The case is currently at the first-instance stage.