Ohio State University recently filed another federal trademark application for the "OSU" mark. The OSU mark currently is used by Ohio State, Oklahoma State and Oregon State.
Apparently there is a concurrent use agreement between Ohio State and Oklahoma State for their respective federal registrations (see Reg No. 1121595 and 1121596). Oregon State does not have a federal registration for the OSU mark.
Will Oklahoma State demure to Ohio State for this application? Probably not (see link). But, given the existing agreement between these two parties, it would be safe to assume that another agreement will be reached.