Following news that music, movie and TV show piracy has been declining in Norway for years, entertainment industry companies and their anti-piracy groups are back to settle some unfinished business. After spending large sums of money on prolonged and unsuccessful legal action to block The Pirate Bay, they will now take advantage of new legislation to make a fresh and potentially final run at a stubborn local ISP.

Last week an IPSOS study revealed that Norway’s piracy problem is nowhere near as serious as some industry bodies had led people to believe.

The report found that since 2008 music piracy has been in steady decline, to a point in 2012 where it sat at just 17.5% of its level four years earlier. Piracy of movies and TV shows has been hit too, both down by about a half over the same period.

Against a backdrop of improving availability of licensed services such as Spotify and Netflix, entertainment companies were bound to reap the rewards. However, their insistence that progress would not be possible without tough action against pirate sites has never gone away. And now they’re back again with fresh domain blocking action against a local ISP.

“Our attorneys have started preliminary work on getting Telenor to block The Pirate Bay for their customers. Telenor will not do so without an injunction, but we hope it will happen almost immediately when we go to court,” says Willy Johansen, Secretary General of the Norwegian Videograms Association.

Together with an alliance of rightsholders, Johansen says a lawsuit will be initiated against Telenor during the next few weeks.

The announcement represents a new chapter in a long history of industry legal action against Telenor, which began back in 2009 when IFPI and music rights group TONO tried to force the ISP to block The Pirate Bay. After failure at the District Court and later at the Court of Appeal, the pair eventually conceded that there was no basis for the ISP to block sites under Norwegian law.

However, a new law went into action in Norway at the start of this month which means that blocking will now be tested again, this time with the balance tipped in favor of the rightsholders.

“TONO lost their case because legislation was not in place to force Telenor to block sites like Pirate Bay. Now we have an opening,” Johansen says.

But despite the change in the law Telenor insist they are clear where they stand at the moment. A judgment in 2010 said that Telenor does not have to block The Pirate Bay and the ISP says as far as they are concerned, that ruling is still in place.

“Telenor does not engage in censorship. No one has ordered us to block access to The Pirate Bay, so we are not,” says Knut Sollid, Telenor’s Regional Head of Information.

With Norway’s new copyright law specially crafted to allow for site blocking, it seems almost certain that Telenor will be forced to block The Pirate Bay. Once that happens, other ISPs will be required to do the same.

Johansen has also warned that his organization has a list of other sites that they’d like to be blocked too. The Pirate Bay, he says, is only the beginning.