The Pirate Bay today said it filed a report with the Finnish police alleging that an anti-piracy group committed copyright infringement when it created a Pirate Bay parody site.

This follows a threat last week in which the Pirate Bay said it will sue the makers of the copycat website for copyright infringement. The Pirate Bay, of course, is used by many to distribute and download torrents of copyrighted files (it calls itself "world’s largest site for cultural diversity and file sharing"). The torrent site explains that it normally wouldn't mind copying, but it takes offense because this incident's perpetrator was the Copyright Information and Anti-Piracy Centre (CIAPC) in Helsinki.

"The reason [for the police report] is that CIAPC have copied files from which The Pirate Bay is built, to produce a fraudulent parody site," the Pirate Bay announcement said. "While The Pirate Bay may have a positive view on copying, it will not stand by and watch copyright enforcing organizations disrespect copyright. It's funny that we have to teach the copyright lobby the meaning of the law."

CIAPC has angered the Pirate Bay on numerous occasions. Last November, the house of a nine-year-old girl was raided by Finnish police because the girl downloaded a copyrighted music album from the Pirate Bay. The nonprofit CIAPC reportedly tracked the download, leading to the police investigation, which resulted in her Winnie the Pooh laptop being confiscated. CIAPC also has attempted to get Finnish ISPs to block the Pirate Bay.

The Pirate Bay said it filed the police report "Because we enjoy being a pain in the ass of the copyright lobby" and "because we think a certain 9 year old girl should have her computer back. Any money that might come out of this will fund a new computer for the girl."

The parody site, called “Piraattilahti” (“Pirate Bay” in Finnish), is still online. It provides a similar interface as the real Pirate Bay, but all links lead to a site with the message "You got lucky! Movies, TV shows, music, games and books ... Are all just a few clicks away! And totally legal!"

We've asked the Pirate Bay to provide a copy of its police report.

According to TorrentFreak, the report was filed with Finland police's economic crime unit, and "[t]he main complaint is that CIAPC copied the site’s homepage and the CSS file. This is a direct violation of The Pirate Bay’s usage policy which specifically prohibits organizations’ use of any site material without permission."

The Pirate Bay further argues that CIAPC can't defend itself by saying it's a parody in this case.

“In a similar case, the prosecution and the Helsinki Court of Appeals have found that a parody site can violate the moral rights of the original author. Changing the logo or making slight edits to the text are not enough to remove this liability,” Pirate Bay argued to police, according to TorrentFreak.