u-blox has filed a declaratory judgment action in the Southern District of California against Koninklijke KPN N.V. (3:21-cv-01220), a telecommunications provider based in the Netherlands, asserting various claims related to KPN’s alleged failure to license its standard essential patents related to 2G, 3G, and 4G cellular technology on fair, reasonable, and non-discriminatory (FRAND) terms. In January of this year, KPN fired off a round of new suits—against u-blox, as well as against Acer, BLU Products, Bullitt Group, Xiaomi, and Yulong Computer Telecommunications Scientific Company (Coolpad Technologies)—in the District of Delaware, where recent dismissals have left only a case between KPN and HTC still headed toward trial there.