In late 2021 and early 2022, Apex Beam Technologies LLC launched litigation, with the backing of a third-party litigation funder, first against TCL (TCT Mobile) and then OnePlus and ZTE, adding a case against Samsung in June 2022. Apex Beam asserted five patents received from Shanghai Langbo Communication Technology in October 2021, but instituted trials in response to petitions for inter partes review (IPR) of all five of those patents have halted litigation, at least against Samsung. Now, Apex Beam has acquired roughly 20 more US patent assets, from a new source, and has moved to amend its complaint against TCL to assert five of them.