The SCO/IBM Unix and Linux ownership dispute has re-emerged through Xinuos, seeking to revive old claims related to Project Monterey. This project, a 1998 alliance between IBM and SCO, aimed to create a unified Unix for multiple processors by blending their code. IBM later shifted focus to Linux, allegedly contributing Monterey code to the open-source project, which SCO believed infringed upon its ownership.SCO sued IBM, and despite SCO's financial struggles, successors kept the lawsuit active due to the potential for significant financial gain. Previous litigation concluded in 2021 with a settlement where no fault was admitted by IBM. SCO had sold its software assets to Xinuos, which decided to continue the legal battle.The current Xinuos case recently had a hearing, revisiting arguments about Project Monterey and ownership rights. Xinuos contends that IBM lacked the necessary licenses for SCO's code. IBM maintains its actions were lawful. The central legal question revolves around Xinuos's right to litigate these outdated claims, considering potential expired legal windows.