I worked as a contractor for a very large defense company. After a year, they offered me full time employment. I specifically asked if there was a "we own everything you make" clause in the employment agreement, but I was assured there was not. I went through about five digital form contracts, and when I got to the last one, it had the clause in there. I told the woman that I wanted to amend the contract and she huffed and told me they don't do that. I replied that I was promised that I would not have to agree to such a clause, and she told me that it was mandatory, so I could take it or leave it. I asked if there was anyone in HR I could talk to about this, and was told no. So I stood up and said "please escort me out the door, starting immediately I am resigning. At the gate, I would like the security guard to search my things." (it was a secured facility, and I didn't want anyone to claim I was stealing anything later.) She asked me if I was serious, and I said yes. I was berated for how much time and money was wasted on getting me ready for employment, and I replied I was promised repeatedly that I would not have to sign away my rights, and this was absolutely a deal breaker and I didn't appreciate being told repeatedly this would be honored until the very last minute. So really, my time was being wasted too. This really, really didn't go over well. My heart was beating like crazy the entire time. My former boss was furious, the HR person was furious. The security guard was cool about it though.