Chalmers does not even retain IP from employees, much less students. The case with the students and Volvo was because they were doing a masters thesis at Volvo and Volvo was trying to claim that all IP developed during that belonged to them. However in Europe such agreements are likely invalid, because an agreement always has to be beneficial to both sides, in this case to give up your IP you have to be paid.

It's quite funny that so many here are claiming universities are claiming student IP, but one of the main cases we find is of a company trying to claim IP without paying.