I'd say it's pretty much standard. Copyright is a form of IP and thus companies usually require you to assign it to them. It'll probably come up in every future

I'd say it's pretty much standard. Copyright is a form of IP and thus companies usually require you to assign it to them. It'll probably come up in every future due dilligence. I don't know whether it's enforceable, but I think it probably is — for work connected to your employer, at least.