The US begins its appeal in order to extradite the WikiLeaks founder. We explain how we got here.
By Dominic Casciani
Home affairs correspondent
The judge blocked the request because of concerns over Mr Assange's mental health and risk of suicide in the US.
The 49-year-old is wanted over the publication of thousands of classified documents in 2010 and 2011.
The US claims the leaks broke the law and endangered lives. Mr Assange has fought the extradition and says the case is politically motivated.
The US authorities have said the decision will be appealed.
Stella Moris gave birth to the couple's two sons while he was in hiding in the Ecuadorian embassy.
John Shipton said Julian Assange had felt "ceaseless anxiety" over the past decade.