I'm from Sweden and I've consulted a lawyer regarding a similar clause in my employment contract. That firm suggested that it was enforcable, and more so the c

I'm from Sweden and I've consulted a lawyer regarding a similar clause in my employment contract. That firm suggested that it was enforcable, and more so the closer your "invention" is to the business of your employee. This, however, does not hold if your invention is patentable, since patentable inventions have special protection in Swedish law. This is ironically not applicable to software, since we don't have software patents.