Factor2 Multimedia Systems, LLC has sued ByteDance (TikTok) (1:24-cv-00133) over user verification features within the TikTok platform. Asserted in the new District of Columbia complaint are six authentication patents, the named inventors of which are no strangers to patent litigation, the pair having lost another patent from the same family to Alice—as patent-ineligibly drawn to the abstract idea, characterized by the court as “admittedly verbose”, of “using a third party and a random, time-sensitive code to confirm the identity of a participant to a transaction”—in a procedurally complicated dispute running from October 2015 into early 2019.