I wrote some software that I licensed to a university club as part of their operations. Due to disagreements about the value of the software, I would like to revoke permissions for use of the software and recover the files, as while I retained copyright to it, the only copy of the software that exists is on their systems.
How can I compel the return of these files? I would argue that they are my property since I created them and retained copyright, but the university has so far been unwilling to cooperate and return them.
Note that the software was a significant (3+ years) project that I would like to use as a portfolio piece, due to this disagreement I have been unable to.