(CNN) The extradition hearing of WikiLeaks founder Julian Assange will go ahead in February 2020 after a judge denied a request by his lawyers to delay proceedings by three months.

Assange appeared in person at Westminster Magistrates court on Monday for a case management hearing on his extradition to the United States.

The Australian is battling multiple charges, including 17 new counts under the Espionage Act in May this year, for unlawfully encouraging, receiving and publishing national defense information in concert with former Army intelligence analyst Chelsea Manning

UK District Judge Vanessa Baraitser denied Assange's legal team request to delay proceedings and timetable by three months, confirming that the full extradition hearing will still go ahead in late February.

Supporters of Wikileaks founder Julian Assange demonstrate oustside Westminster Magistrates' Court in London.

Defense lawyer Mark Summers had argued that his team needed more time to gather and provide all the evidence needed.

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