The relationship between GlobalFoundries and IBM has been rocky in recent years. Among other things, Big Blue has previously sued GF, seeking damages for abruptly stopping the development of leading-edge process technologies in 2018 and disrupting IBM’s server CPU plans. On Wednesday GlobalFoundries fought back and accused IBM of handling GlobalFoundries’ IP related to chip manufacturing to Intel and Rapidus as part of its ongoing partnerships with these companies to develop leading-edge chip technologies. As part of the filing, GlobalFoundries is also accusing IBM of poaching its engineers.