ETRI Sues Shenzhen Tenda Over Wi-Fi 6; ASUS Joins Sisvel Wi-Fi Multimode
May 19, 2026
Sisvel announced on Tuesday that ASUS has settled its lawsuits with Huawei, Philips, and Wilus, becoming the Wi-Fi Multimode pool’s latest licensee.
ASUS is involved in six infringement cases at the UPC, against Nokia, Ericsson, Lenovo, Xiaomi, OPPO, Dolby, and Wilus. By joining Sisvel, ASUS has now resolved its dispute with Wilus, having previously settled with Xiaomi and Dolby. The cases against Nokia, Ericsson, Lenovo, and OPPO remain ongoing. Last week, the Shanghai Intellectual Property Court heard a case brought by OPPO against ASUS.
Last week, another Wi‑Fi 6 patent lawsuit was filed, but it is unrelated to the Sisvel pool.
On May 15, 2026, Electronics and Telecommunications Research Institute (ETRI) sued China's Shenzhen Tenda Technology Co., Ltd. in the Eastern District of Texas, claiming infringement of its Wi‑Fi 6 patents, Case: 2:26-cv-00398. ETRI, however, is not a licensor in the Sisvel Wi‑Fi Multimode pool.
US10,405,372, Frame transmission method performed in access point, frame reception method performed in terminal, and access point
US10,506,453, Method for transmitting frame using selective beamforming and apparatus for performing the method
US9,730,238, Communication apparatus and data frame transmission method of the same
US10,250,304, Method of transmitting and receiving frame for uplink multi-user multiple-input and multiple-output (UL MU-MIMO) communication
US11,729,715, Method and apparatus for allocating flexible transmission slot in wireless LAN system
The complaint targets Tenda’s Wi‑Fi 6 compliant products (routers, mesh systems, extenders, USB adapters, IP cameras) that implement technologies like OFDMA and MU‑MIMO, which Tenda markets in the U.S. as advanced high‑efficiency, high‑capacity, low‑latency devices.
Tenda holds a domestic market share of around 5% and a global market share of 2% to 3%, ranking sixth to seventh worldwide after TP-Link, ASUS, Huawei, Xiaomi and Netgear.
Tenda is very well known in China's patent community because about seven or eight years ago, an NPE that had acquired patents from Huawei sued Tenda in China, and the Supreme People's Court later designated that case as a guiding case, which addressed the issue of multi‑implementer infringement. This is also the key legal issue in the IWNCOMM v. Apple case — namely, whether end‑user devices infringe. Apple has been trying to overturn both of these cases in China.