Valve has fought controller-based patent litigation before: https://www.gamingonlinux.com/2021/08/valve-catches-a-break-in-the-steam-controller-patent-trial-ver

Valve has fought controller-based patent litigation before: https://www.gamingonlinux.com/2021/08/valve-catches-a-break-in-the-steam-controller-patent-trial-versus-ironburg/ https://www.gamingonlinux.com/2021/08/valve-catches-a-break-...