Last November, DigitalDoors, Inc. filed its first litigation, suing IBM for alleged infringement of a group of patents broadly directed to various aspects of data security technologies. As that case passes the one-year mark, the inventor-controlled plaintiff has started a second litigation campaign, this time suing Bank of America (2:23-cv-00542), Bank OZK (2:23-cv-00543), Beal Bank (2:23-cv-00544), BOKF (2:23-cv-00545), Capital One Financial (Capital One) (2:23-cv-00546), Comerica (Comerica Bank) (2:23-cv-00541), East West Bank (2:23-cv-00547), First Citizens Bancshares (First Citizens Bank and Trust) (2:23-cv-00548), JP Morgan Chase (2:23-cv-00550), Prosperity Bancshares (Prosperity Bank) (2:23-cv-00551), and Regions Financial (Regions Bank) (2:23-cv-00552), all over the use of data processing systems compliant with the Sheltered Harbor specification, or those that otherwise “provide substantially equivalent functionality” for “providing data backup of critical customer account data” based on certain content filters, allegedly as claimed in the asserted four patents.