Phillip Rogaway explicitly abandoned the OCB patents in 2021: * https://mailarchive.ietf.org/arch/msg/cfrg/qLTveWOdTJcLn4HP3ev-vrj05Vg/ https://mailarchive.iet

Phillip Rogaway explicitly abandoned the OCB patents in 2021: * https://mailarchive.ietf.org/arch/msg/cfrg/qLTveWOdTJcLn4HP3ev-vrj05Vg/ https://mailarchive.ietf.org/arch/msg/cfrg/qLTveWOdTJcLn4HP3... The linked patent reflects the unpaid upkeep fee and shows a status of expired as a result.