I was reviewing a "standard service agreement" last year. Clause 5 said all work product including rejected drafts becomes the client's exclusive property across all related categories. Forever.
I'm a developer. That clause would have handed them rights over anything I built in that industry for future clients too.
I negotiated it out. They accepted within an hour. They didn't even realize what their own contract said.
Freelancers sign contracts written by the client's lawyer. FlagMyContract scans every clause for IP traps, payment risks & non-competes — and gives you the exact counter-clause language to send back.