All six of the entities granting to the same third party a security interest in their patent portfolios have now filed suit, Entangled Media LLC hitting Dropbox (1:22-cv-01324) in the Western District of Texas. The pair of asserted patents generally relate to “performing an operation” on a “singular file system” that synchronizes files across multiple devices, with infringement allegations targeting the provision of the Smart Sync tool in various Dropbox filesharing products.