Prosecutors said Wednesday they will seek the death penalty in this case.
In a jailhouse interview in March, Patel told the Daily Herald he meant to kill himself, not the boys.
The trial isn't expected to begin for at least another year.
Death penalty to be sought for dad who killed 2 sons
Authorities say Kaushik Patel of Glendale Heights poured gasoline on his 4- and 7-year-old boys last November and then ignited it.
Both boys survived for several weeks before dying.
