Post-Conviction Relief in Maryland: Deadlines, Claims, and Hearings

Post-conviction relief in Maryland is a way to challenge a conviction or sentence after your direct appeals have ended, by filing a single petition in the circuit court where you were convicted within 10 years of sentencing. The Uniform Post-Conviction Procedure Act, at Maryland Code, Criminal Procedure 7-101 through 7-109, targets legal errors the trial record alone cannot fix, such as ineffective representation, constitutional violations at trial, or evidence that came to light after the verdict.¹ Two rules shape everything else: you get one petition per conviction, and you almost always have to file within 10 years of the sentencing date.²

What You Can Raise

A post-conviction petition is a collateral attack, not a retrial. It does not reopen the question of guilt. It asks whether a specific legal error made your original proceedings unfair. Maryland recognizes four categories of claims:³

The conviction or sentence violated the U.S. Constitution, the Maryland Constitution, or Maryland law.
The court lacked jurisdiction to impose the sentence.
The sentence exceeds the legal maximum.
Any other error that would support habeas corpus or a similar remedy.

There is a gate in front of all four. The error cannot have been “previously and finally litigated or waived.”³ If a claim was already decided on direct appeal, you cannot re-raise it. If you could have raised a claim at trial or on appeal and knowingly did not, it is treated as waived. Your petition itself has to explain why the errors you are raising were not waived, so it is worth thinking hard about what was and was not argued earlier in your case.

The 10-Year Deadline and the One-Petition Rule

Two limits are strict. You may file only one post-conviction petition per conviction, and unless you can show extraordinary cause, that petition must be filed within 10 years after the sentence was imposed.² Miss the deadline and relief is usually gone for good.

If a first post-conviction proceeding has already concluded, the court can reopen it only if doing so is “in the interests of justice.”⁴ That is a high bar, and someone trying to reopen is not automatically entitled to a lawyer or a hearing; the court decides both.⁵ Treat the first petition as the only shot and include every viable claim.

The Claims That Actually Work

Most Maryland post-conviction petitions rest on one of three arguments: ineffective assistance of counsel, a constitutional violation at trial, or newly discovered evidence, including DNA.

Ineffective Assistance of Counsel

The Sixth Amendment guarantees competent representation, and post-conviction is usually the first chance to prove your lawyer fell short, because those facts often live outside the trial record. Maryland courts apply the two-part test from Strickland v. Washington: you must show the attorney’s performance fell below an objective standard of reasonableness, and that the deficient performance created a reasonable probability of a different outcome.⁶ Both prongs are required. Sloppy lawyering that would not have changed the result is not enough, and neither is strong prejudice from work that was within professional norms.

Typical examples include failing to investigate, not calling a key witness, misadvising a client about the consequences of a guilty plea, and failing to object to improper jury instructions. In Padilla v. Kentucky, the Supreme Court held that counsel’s failure to advise a noncitizen defendant about certain deportation consequences of a guilty plea can qualify as constitutionally deficient.⁷ If a court agrees, it may vacate the conviction, order a new trial, or let the defendant withdraw a plea.

Constitutional Violations at Trial

Petitions also succeed on violations of the U.S. Constitution or the Maryland Declaration of Rights during trial or sentencing. Due process claims often arise under Brady v. Maryland, which requires prosecutors to disclose evidence favorable to the defense when it is material to guilt or punishment.⁸ If the State suppressed evidence that could have changed the outcome, that is a due process violation whether or not the suppression was intentional. Other constitutional claims include prosecutorial misconduct such as knowingly presenting false testimony, juror bias or improper influence, and denial of the right to confront witnesses. If a violation substantially affected the outcome, the court can overturn the conviction or grant a new trial.

New Evidence and DNA Testing

Evidence that surfaces after trial can support relief, but the timing rules are unforgiving. Under Maryland Rule 4-331(c), a motion for a new trial based on newly discovered evidence must be filed within one year of the later of the sentencing date or the date the court received the mandate from the final appellate court on direct appeal.⁹ The clock runs from sentencing or the mandate, not from when the evidence is discovered. That distinction catches many people off guard.

DNA is the major exception. A motion based on DNA identification testing or another generally accepted scientific technique can be filed at any time if the results, if proved, would show the defendant is innocent.⁹ There is also a separate DNA statute at Criminal Procedure 8-201: a person convicted of a crime of violence may petition for DNA testing of scientific identification evidence, and the court will order it if there is a reasonable probability the results could produce evidence relevant to a claim of wrongful conviction or sentencing and the method is generally accepted in the scientific community.¹⁰ One practical hurdle: the evidence must still be in law enforcement’s possession, which is not always the case years later.

What Goes in the Petition

You file in the circuit court where you were convicted. Maryland Rule 4-402 sets out what the petition has to include:¹¹

Your name, place of confinement, and inmate identification number.
The place and date of trial, the offense, and the sentence.
A clear statement of each legal error the petition is based on.
A concise statement of the facts supporting each allegation.
The relief you are asking the court to order.
A history of previous appeals, motions for new trial, and any earlier post-conviction petitions, with outcomes.
A statement explaining why the alleged errors have not been waived.

The petition must also state whether you can afford an attorney and the costs of the proceeding, and a copy has to be served on the State’s Attorney’s Office, which can respond and contest your claims.

On a first petition, you have a statutory right to both counsel and a hearing.⁵ Incarcerated individuals can apply to the Office of the Public Defender’s Post Conviction Defenders Division and automatically qualify for services. People on parole or probation can also apply, but eligibility turns on income and other factors.¹²

Review, Hearing, and Outcomes

The court first reviews the petition to see whether the claims are properly framed and legally sufficient. If it is facially deficient, repeats issues already litigated, or is procedurally barred, the court can dismiss it without a hearing. The State’s Attorney may file a response arguing the claims were already decided on direct appeal, are waived, or do not meet the legal standard.

If the petition presents colorable claims, the court schedules a hearing. You can introduce evidence, call witnesses, and testify. Expert witnesses, like forensic analysts or attorneys speaking to the standard of care, often support ineffective-counsel and constitutional claims. In new-evidence cases, affidavits or live testimony come in. The State cross-examines and presents its own arguments. The burden of proof stays with you throughout, and the hearing focuses narrowly on the legal error, not guilt or innocence.

If the court finds a significant error, its remedial authority is broad. It can vacate the conviction entirely, which may lead to a retrial, a new plea, or dismissal if the State’s evidence has deteriorated. If the error is confined to sentencing, the court can modify the sentence without disturbing the verdict. Where ineffective assistance affected a plea agreement, the court may allow you to withdraw the plea and go to trial.

If the Petition Is Denied

A denied post-conviction petition does not appeal automatically. You have to file an application for leave to appeal with the Appellate Court of Maryland within 30 days after the circuit court’s order. The State can seek leave to appeal too if the court granted you relief. The Appellate Court reviews whether the circuit court applied the law correctly; no new evidence comes in. If leave is denied, the circuit court’s order is final.¹³ In rare cases, further discretionary review is available from the Supreme Court of Maryland, which takes only cases raising significant legal questions.¹⁴

Federal Habeas Corpus

After state remedies are exhausted, you can file a federal habeas petition in federal district court under 28 U.S.C. 2254, arguing that you are in custody in violation of the Constitution or federal law.¹⁵ Federal courts will not hear the petition unless you have exhausted your state remedies or no effective state process is available.

Federal habeas has its own one-year statute of limitations, generally running from the date the state conviction became final. The clock is tolled while a properly filed state post-conviction petition is pending, so pursuing state relief does not eat into the federal deadline.¹⁶ Once state proceedings end, the remaining time resumes, and missing the federal deadline is usually fatal. Federal review is also highly deferential: the state court’s ruling must have been contrary to clearly established Supreme Court precedent or an unreasonable application of federal law.

1
Maryland General Assembly. Maryland Code Criminal Procedure 7-101
2
New York Codes, Rules and Regulations. Maryland Code Criminal Procedure 7-103
3
Maryland General Assembly. Maryland Code Criminal Procedure 7-102
4
Maryland General Assembly. Maryland Code Criminal Procedure 7-104
5
Maryland General Assembly. Maryland Code Criminal Procedure 7-108
6
Legal Information Institute. Prejudice Resulting from Deficient Representation Under Strickland
7
Justia. Padilla v. Kentucky, 559 US 356
8
Justia. Brady v. Maryland, 373 US 83
9
New York Codes, Rules and Regulations. Maryland Rules, Rule 4-331 – Motions for New Trial, Revisory Power
10
Maryland General Assembly. Maryland Code Criminal Procedure 8-201
11
New York Codes, Rules and Regulations. Maryland Rules, Rule 4-402
12
Maryland Office of the Public Defender. Post Conviction Defenders Division
13
Maryland General Assembly. Maryland Code Criminal Procedure 7-109
14
Maryland Courts. Appeals to the Appellate Court of Maryland
15
Office of the Law Revision Counsel. 28 US Code 2254 – State Custody, Remedies in Federal Courts
16
Office of the Law Revision Counsel. 28 US Code 2244