You might be confusing SCO and USL. SCO brought lawsuits against IBM (Linux) in 2003. https://en.m.wikipedia.org/wiki/SCO_Group,_Inc._v._International_Busines

You might be confusing SCO and USL. SCO brought lawsuits against IBM (Linux) in 2003. https://en.m.wikipedia.org/wiki/SCO_Group,_Inc._v._International_Business_Machines_Corp https://en.m.wikipedia.org/wiki/SCO_Group,_Inc._v._Internati.... USL brought lawsuit against BSD in 1992. https://en.m.wikipedia.org/wiki/UNIX_System_Laboratories,_Inc._v._Berkeley_Software_Design,_Inc https://en.m.wikipedia.org/wiki/UNIX_System_Laboratories,_In....