[Grustaf]

Clearly anything related to company IP belongs to the company, even if you come up with it in the evening.

I am of course talking about innovations or just work done in unrelated areas, while employed.

The idea that an employer owns everything you create is offensive to human dignity and happily that is not how it works in Europe.

You are even encouraged to start your own company, in some countries you have a legally enshrined right to take a LOA for six months and work on your business, and then come back to your old employer.