Q. Can I make use of my old 1098-Ts ?
A. No. The only tax breaks available to grad students is a non-refundable credit (Lifetime Learning) and a tuition deduction. So, if you didn't have enough income to have a tax liability, there is nothing to claim by filing (late) tax returns for 2018 and 2019.
On the other hand, if box 5 of the 1098-T was more than box 1, you may have taxable scholarship income that needs to be reported.
