Doubts are growing that the controversial Anti-Counterfeiting Trade Agreement (ACTA) will be passed in Europe as Poland wants to reconsider the agreement.
According to reports, Poland prime minister Donald Tusk has said his government had signed the European Union (EU) contract in January without properly considering the view of internet users.
The Polish had initially objected to the treaty before it was finally signed in Tokyo by 22 EU member states.
Last week, French MEP Kader Arif, who had been in charge of negotiating ACTA, resigned in protest over the proposals, arguing the agreement will restrict internet freedom and should be made more transparent to the public.
ACTA is an international treaty aimed to protect the rights of copyright holders against the threat of internet piracy.
The treaty has faced opposition from governments and internet rights groups because it contains clauses that would lead to increased internet regulation, and because consultations have taken place largely in secret between the EU, the US and other leading countries since 2007.
In 2010, leaked documents showed that the trade agreement contains controversial proposals for disconnecting illegal downloaders from the internet.
If Poland refuses to ratify the agreement, the EU will not be able to sign up to ACTA, although individual member states could still embrace the treaty. ACTA has yet to receive formal ratification from a single country, even though 31 countries in total have signed up.
ACTA also needs the agreement of the European Parliament if it is to go ahead and this is far from certain, as the body has long denounced the treaty and the process by which it is being passed, for being too secretive.
Jérémie Zimmermann, co-founder of French digital rights group La Quadrature du Net, has argued the European Commission is trying to bypass democracy to impose "repressive measures".
"The truth is that the Commission is trying to impose the [entertainment] industry's agenda to enforce outdated copyright, patent and trademark policies through tough criminal sanctions and extra-judicial measures," he said.
Meanwhile the UK's Pirate Party has now declared 11 February an "international day of action against ACTA", and said it will support protests taking place across Europe.
"We saw what the combination of protest and political pressure achieved with the dropping of SOPA. But the threats to digital rights and civil liberties aren't over. It's vital that we send a clear message that the people of Europe don't want ACTA," said Pirate Party leader Loz Kaye.
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