In re: Sealed Case

Srinivasan, Circuit Judge:

Often, when a criminal defendant agrees to plead guilty, he also agrees to waive his right to take an appeal or seek collateral review after he is sentenced. The appeal waiver generally precludes him from bringing an appeal on any as-yet-unknown claim that might arise in his upcoming sentencing proceedings. So, for instance, if the defendant comes to believe that the trial court committed an error in determining his sentence, his appeal waiver generally would bar him from appealing on that ground.

*399 But what if the claim the defendant wishes to raise on appeal…