The grounds for appeal were not specified Friday, but one of them is expected to be the fact that the trial was held in the city of Boston.
Tsaranev, 22, was convicted last year and sentenced to death in the bombings, which killed three people and injured more than 260.
Prosecutors allege in court documents that Dzhokhar Tsarnaev showed “the opposite of remorse” when he was captured after the attack.
A federal judge has ordered the public release of hundreds of documents in the case of Boston Marathon bomber Dzhokhar Tsarnaev.
A federal judge has rejected Tsarnaev’s bid for a new trial and ordered him to pay victims of the deadly attack millions in restitution.
“I was young, dumb, and thought I could outsmart everyone,” 22-year-old Stephen Silva told a judge in U.S. District Court.
Dzhokhar Tsarnaev deserves a new trial to reconsider both his guilt and his punishment, his lawyers argued Tuesday.
A judge will hear arguments next month on Boston Marathon bomber Dzhokhar Tsarnaev’s request for a new trial.
After Tsarnaev was charged in the deadly 2013 bombing, his communications with the outside world were sharply limited.
A judge has rejected a motion to publicly release the names of jurors in the Boston Marathon bombing trial.
Tsarnaev lawyer’s say his trial should have been held outside the city because jurors couldn’t avoid widespread outrage over the attack.