Yes, you can file a writ petition before the Delhi High Court if you believe your ongoing criminal trial is causing grave injustice, since Article 226 of the Constitution empowers High Courts to issue appropriate writs to protect fundamental rights and address situations where the ordinary appellate process may not provide adequate or timely relief for serious procedural irregularities or violations occurring during the trial itself.

Writ jurisdiction in the context of ongoing criminal trials is generally exercised sparingly and reserved for genuinely exceptional circumstances, such as where the trial court has acted entirely without jurisdiction, where there has been a fundamental violation of natural justice principles, where continuing the trial would constitute a clear abuse of the legal process, or where the injustice is so severe and apparent that requiring you to wait for the normal appellate process after final judgment would itself cause irreparable harm.

To pursue such a writ petition, you must clearly articulate the specific nature of the grave injustice you are experiencing, supported by evidence demonstrating why ordinary remedies within the trial court itself, or waiting for the standard appellate process, would be inadequate to address the harm you are facing, since the Delhi High Court generally expects parties to exhaust appropriate lower-court remedies before invoking this extraordinary writ jurisdiction, absent truly compelling circumstances.

Given the high threshold required to successfully invoke writ jurisdiction during an ongoing trial, and the significant strategic considerations involved in pursuing this extraordinary remedy, it is essential to work with experienced constitutional and criminal law counsel who can properly assess whether your circumstances genuinely warrant this approach. Consulting the team at Aapka Legal Advice can help you evaluate whether a writ petition is the appropriate remedy for the injustice you are experiencing in your Delhi criminal trial.

Given the significant legal complexity and high threshold involved in successfully pursuing writ relief during an ongoing trial, obtaining a second opinion from a retired judge on the genuine viability of your specific circumstances can provide invaluable clarity before proceeding. Delhi's experienced criminal lawyers and retired judges, available through Aapka Legal Advice's Delhi criminal lawyer directory, can help you evaluate this significant remedy.

In conclusion, you can indeed file a writ petition before the Delhi High Court if your criminal trial is causing grave and demonstrable injustice, though this extraordinary remedy is reserved for genuinely exceptional circumstances, making careful legal assessment essential before pursuing this significant step.