Parliamentarians approved the law by a vote of 121 to 34, despite cries from consumer groups that say it infringes upon consumer rights.
The Finnish government pushed through the law due to pressure from the European Union for the entire bloc to agree on copyright legislation. The world's biggest entertainment companies have lobbied hard in the EU for legislation that would help clamp down on pirate merchandise and illegal internet downloads.
But some critics say Finland's law goes too far, and was too hastily prepared. Consumer protection groups are angry that the law technically makes it illegal for people to circumvent copyprotection to make copies for their own use - for example, digitizing a CD for use in an mp3 player.
Consumer protection groups are worried that companies would take advantage of the unclear language in the law to create merchandise that is impossible to copy. There are also concerns that entertainment companies would take advantage of the unclear details to prosecute people who do make private copies.
Parliament responded to these concerns by adding a statement to the law expressing the hope that companies would voluntarily avoid doing so.
Minister of Culture Tanja Karpela defended the law, saying that Finland does not have the right to create a law which diverges from the EU directive on copyrights. Other parliamentarians such as Jan Vapaavuori responded to her by saying that the directive can be interpreted in many ways, and that it was not necessary for Finland to take such a hard line.