- What:challenge after appeal stage.
- For:off-record claims.
- Deadline:strict.
- Bar:known claims must come earlier.
A postconviction petition under Minnesota Chapter 590 is the main way to challenge a conviction or sentence based on issues that fall outside the trial record — like ineffective assistance of counsel or newly discovered evidence — but it comes with strict time limits and important restrictions. It's different from a direct appeal, which reviews the existing record, and understanding when and how to use it is critical. Here's how postconviction relief works.
What Chapter 590 Is For
Postconviction relief under Chapter 590 lets a convicted person petition the court that convicted them to vacate or correct the conviction or sentence, on grounds that the conviction or sentence violated their rights. Crucially, it's the vehicle for claims that depend on facts outside the trial record — things a direct appeal, which is confined to that record, cannot reach.
What this means for you: If the problem with your case involves something not captured in the trial transcript — what your lawyer did or didn't do, evidence that surfaced later — postconviction relief is generally the avenue, not a direct appeal.
How It Differs From a Direct Appeal
- A direct appeal goes to a higher court and reviews the existing trial record for legal error;
- A postconviction petition goes back to the trial court and can develop facts beyond the record — through affidavits, evidence, and sometimes an evidentiary hearing.
The two are related but distinct, and the choice (or sequence) between them matters. Some issues must be raised on direct appeal; others can only be developed through postconviction.
What this means for you: The right path depends on the nature of the claim and where you are in the process. Record-based legal errors point toward direct appeal; off-record claims point toward postconviction.
Common Grounds
Postconviction petitions often raise claims such as:
- Ineffective assistance of counsel — that the defense fell below constitutional standards and affected the outcome;
- Newly discovered evidence — meeting the demanding test for evidence that couldn't have been found earlier;
- Constitutional violations not addressable on the existing record;
- Other claims that the conviction or sentence violated the petitioner's rights.
The Strict Time Limit
Chapter 590 generally imposes a strict deadline for filing a postconviction petition, running from a defined point after the conviction becomes final, with only limited exceptions. Missing the deadline can bar the petition entirely, regardless of its merits.
What this means for you: Time is critical. The deadline is firm, and waiting can foreclose relief even for a strong claim. If you think you have postconviction grounds, the clock matters.
Important Limits and Bars
Beyond the time limit, postconviction relief carries other restrictions. Notably, claims that were raised or could have been raised on direct appeal may be barred from being relitigated in a postconviction petition (a principle from Minnesota case law often associated with the rule that known claims must be raised at the first opportunity). Successive petitions also face limits.
What this means for you: Postconviction isn't a second chance to re-argue what was or should have been argued before. It's focused on claims that genuinely couldn't have been raised earlier — which makes proper handling at each stage important.
What Relief Can Look Like
If a petition succeeds, relief can include vacating the conviction, granting a new trial, correcting or modifying the sentence, or other appropriate remedies depending on the claim. Many petitions are resolved on the written submissions, though some claims warrant an evidentiary hearing to develop the off-record facts.
How It Connects to Related Topics
Postconviction relief is the deep-dive companion to the broader appeals and post-conviction overview, and it connects closely to ineffective assistance of counsel, newly discovered evidence, the motion for a new trial, and habeas corpus and extraordinary writs. Together these form the post-trial toolkit for challenging a conviction.
Updated May 18, 2026 · Law verified as of June 17, 2026. This article is general information about Minnesota law, not legal advice.
Frequently Asked Questions
What is postconviction relief under Chapter 590?
A petition to the convicting court to vacate or correct a conviction or sentence on grounds that it violated the petitioner's rights — especially for claims based on facts outside the trial record, like ineffective assistance or newly discovered evidence.
How is it different from a direct appeal?
A direct appeal reviews the existing trial record for legal error in a higher court. A postconviction petition goes back to the trial court and can develop facts beyond the record. The right path depends on the claim.
What can I raise in a postconviction petition?
Common grounds include ineffective assistance of counsel, newly discovered evidence, and constitutional violations not addressable on the existing record. Claims that could have been raised on direct appeal may be barred.
Is there a deadline?
Yes, and it's strict. Chapter 590 generally imposes a firm filing deadline running from when the conviction becomes final, with only limited exceptions. Missing it can bar the petition regardless of merit. Confirm the current deadline against the statute.
Can I file more than one petition?
Successive petitions face limits, and claims already raised or that could have been raised earlier may be barred. Postconviction is focused on claims that genuinely couldn't have been raised before, not re-arguing prior issues.
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Read the guideThe information on this article is for general informational purposes only and is not legal advice. Reading this article does not create an attorney-client relationship.