WikiLeaks founder Julian Assange presented a protection action through his lawyers against the Ecuadorian government on Friday, accusing it of violating his fundamental rights and freedoms.
"Its lawyer Baltasar Garzon arrived in Ecuador on Thursday to file the case", said the statement. It is due to be heard in a domestic court next week.
Ecuador cut off Assange's communications in March, after he discussed topics on social media which could have allegedly damaged the country's diplomatic relations.
"Ecuador refused to let Human Rights Watch General Counsel Dinah PoKempner, who likened Ecuador's isolation to "solitary confinement" see him as well several meetings with his lawyers".
Assange has been living at the embassy since June 2012 to avoid a European Arrest Warrant over a rape and molestation allegation in Sweden. The lawyer also said during a press conference that there are now no plans to take Assange to Russian Federation.
The accusations against Ecuador came after a document was leaked earlier this week revealing a new set of house rules Assange must adhere to in London from December 1. It also orders him to take proper care of his cat or risk having it handed to a shelter.
WikiLeaks said that USA congressmen had written an open letter to the Ecuador's president, Lenin Moreno, saying that in order to advance "crucial matters from economic co-operation to counternarcotics assistance, to the possible return of a USAID mission to Ecuador, we must first resolve a significant challenge created by your predecessor, Rafael Correa - the status of Julian Assange".
This new protocol will also be challenged by the WikiLeaks lawyer and branded as a way of "censoring" freedom of opinion, speech and association.
The case has since been dropped, but Assange fears he could be extradited to the United States over WikiLeaks' publishing of huge amounts of classified information.
The Ecuadorian government partially lifted restrictions on Assange's internet access last weekend, but stipulated he would only be allowed to use the embassy wifi for his personal computer and phone.