I think the finnish court did the right decision by declaring CSS (copy protection used in DVDs) ineffective and thus not achieving the protection objective put forward in the law. If that would not be the case, then I would make a simple copy-protection that is easy to crack by anyone and then just sue everyone for breaking it.
“[S]ince a Norwegian hacker succeeded in circumventing CSS protection used in DVDs in 1999, end-users have been able to get with easy tens of similar circumventing software from the Internet even free of charge,” wrote the court. “Some operating systems come with this kind of software pre-installed…. CSS protection can no longer be held ‘effective’ as defined in law.”