Knowing how to appeal a criminal conviction in Northern Colorado starts with understanding one hard truth: appeals follow strict rules, and missing a deadline can end your case for good. This guide walks you through each step.
Table of Contents
- What You'll Need Before Filing an Appeal
- Filing a Notice of Appeal in Colorado: Step-by-Step
- Grounds for Appealing a Criminal Conviction
- How the Appellate Court Process Works
- Colorado Rule of Criminal Procedure 35(c): Post-Conviction Relief
- Ineffective Assistance of Counsel Claims
- Cost, Timeline, and What to Expect
- Frequently Asked Questions
Last Updated: September 30, 2026
What You'll Need Before Filing an Appeal
A criminal conviction is not the end of your case. You have the right to ask a higher court to review what happened.
Before you file anything, gather these items:
- A copy of your final judgment and sentencing order
- The court transcript from your trial or plea hearing
- Your case number and the court that handled your case
- Any motions your trial lawyer filed and the judge's rulings
- A written list of what you believe went wrong
The Clock Starts Immediately
An appeal is not a do-over. It is a review of the record, meaning the transcripts and filings already in your case.
The Colorado Judicial Branch self-help center explains that appellate courts review what happened below, not new evidence.
Most people wait too long. A common mistake is assuming the deadline starts when you "feel ready." It starts when judgment enters.
Filing a Notice of Appeal in Colorado: Step-by-Step
Filing a notice of appeal in Colorado is a short document with a hard deadline behind it. Here is the sequence:
- Confirm your deadline with the trial court clerk
- Complete the notice of appeal form
- File it with the trial court, not the appellate court
- Pay the filing fee or request a waiver
- Order transcripts within the required window
- Serve copies on the prosecution and the attorney general
- Wait for the case to be docketed
That last step matters more than people expect. Once docketed, your case gets a number and a schedule.
Grounds for Appealing a Criminal Conviction
Not every complaint counts as a legal ground for appeal. Courts want specific errors, not general frustration.
Valid grounds often include:
- Trial court error in admitting or excluding evidence
- Constitutional violation, such as a bad search or a coerced statement
- Prosecutorial misconduct during trial
- Abuse of discretion in sentencing
- Incorrect statutory interpretation by the judge
What Is Harmless Error?
Harmless error is a mistake that did not change the outcome of your case. If a court finds the error was harmless, it will affirm the conviction anyway.
So your appeal must show the error actually mattered.
How the Appellate Court Process Works
A criminal appeal from a conviction in this region does not go to a new jury. It goes to a panel of judges who read the same record your trial judge and jury saw. The court does not hold a new trial, does not hear live testimony, and does not re-weigh the evidence.
Here is the flow:
- Notice of appeal filed in the trial court
- Record on appeal assembled, transcripts, exhibits, and the clerk's file
- Opening brief filed by the appellant (the person appealing)
- Answer brief filed by the prosecution
- Reply brief filed by the appellant, limited to issues raised in the answer
- Oral argument, if the panel requests it, many appeals are decided on the briefs alone
- Decision: affirmed, reversed, or remanded
Which Court Hears Your Appeal
For a felony or misdemeanor conviction entered in Larimer or Jackson County, the appeal goes to the Colorado Court of Appeals in Denver. The same is true for convictions out of Weld County. The Court of Appeals is an intermediate appellate court, it sits below the Colorado Supreme Court and above the district courts. A panel of three judges typically decides each case.
Standards of Review, The Real Battleground
The single most important concept in an appeal is the standard of review. It tells the appellate court how much deference to give the trial court's decision, and it often decides the case before the merits are even discussed.
- De novo, the appellate court reviews the issue fresh, with no deference. This applies to questions of law, such as whether a statute was interpreted correctly or whether a constitutional right was violated.
- Abuse of discretion, the appellate court asks whether the trial judge's ruling was so far outside the bounds of reason that no reasonable judge would have made it. This applies to evidentiary rulings, sentencing within statutory ranges, and many trial-management decisions.
- Clearly erroneous, the appellate court accepts the trial court's factual findings unless the record leaves it with a definite and firm conviction that a mistake was made.
- Harmless error, even when the trial court got it wrong, the conviction stands if the error did not affect the outcome. This is the standard that defeats most appeals.
Trial Court vs. Appellate Court
The trial court decides facts, runs the trial, and sees the witnesses. The appellate court reviews the law and the record. Two different jobs, two different standards, and two different skill sets.
What the Record Actually Contains
The record on appeal is everything that was said and filed in the trial court: the transcript of every hearing, the exhibits admitted, the jury instructions, the motions and the judge's rulings, and the judgment of conviction. Anything not in the record generally cannot be considered on direct appeal. That is why a claim that depends on facts outside the record, such as a conversation between you and your trial lawyer that was never put on the record, usually has to wait for a post-conviction motion under Rule 35(c).
If you are considering an appeal, ask your trial lawyer to preserve the record now. Objections made at trial, offers of proof, and a complete transcript are what the appellate court will actually read.
Colorado Rule of Criminal Procedure 35(c): Post-Conviction Relief
Rule 35(c) is a separate tool from a direct appeal. It lets you challenge a conviction after your appeal window closes.
Common 35(c) claims include:
- Ineffective assistance of counsel
- Newly discovered evidence
- A plea that was not knowing or voluntary
- A sentence that exceeds what the law allows
Direct Appeal vs. Post-Conviction Relief
A direct appeal challenges your conviction right after sentencing. Post-conviction relief comes later and often raises claims that need facts outside the trial record.
Ineffective Assistance of Counsel Claims
An ineffective assistance of counsel claim says your lawyer's performance fell below a reasonable standard and changed the outcome.
You must usually show two things:
- Your lawyer's performance was deficient
- That deficiency prejudiced your case
What Counts as Ineffective Assistance?
Common examples include failing to investigate, ignoring a clear conflict, or missing a key deadline. But a lost case alone is not proof of bad lawyering.
A procedural default can bar your claim forever. If you raise an issue too late or in the wrong court, you may lose the right to raise it at all.
Cost, Timeline, and What to Expect
An appeal takes months, not weeks. The timeline depends on the court's docket, the transcript length, and how complex your issues are.
Costs typically include:
- Filing fees
- Transcript preparation
- Attorney time for research and briefing
- Possible expert review
What You'll Need to Decide
| Decision | Best For | What to Watch |
|---|---|---|
| Direct appeal | Recent convictions | Strict deadline |
| Rule 35(c) motion | Older convictions | Must show new facts |
| Ineffective counsel claim | Bad representation | Hard to prove |
| Motion for new trial | Fresh evidence | Narrow window |
Here is a simple way to think about it. If your conviction is recent, a direct appeal is usually the first move. If time has passed, post-conviction relief may be your path.
Frequently Asked Questions
What is the deadline to file a notice of appeal in Colorado?
In Colorado, the deadline to file a notice of appeal in a criminal case is typically 49 days from the date of the judgment or order being appealed. Missing this deadline can result in the dismissal of your appeal. Because the deadline is strict, it's critical to contact an appellate attorney as soon as possible after sentencing to preserve your rights.
What are the valid legal grounds for appealing a criminal conviction?
Valid grounds for appealing a criminal conviction include trial court error, constitutional violations such as ineffective assistance of counsel, prosecutorial misconduct, abuse of discretion in sentencing, and errors in statutory interpretation. An appeal is not a new trial; it focuses on legal mistakes made during the original proceedings. An experienced appellate attorney can review your case to identify the strongest issues to raise.
What is the difference between a direct appeal and a Rule 35(c) motion?
A direct appeal challenges errors that appear in the trial record and must be filed within strict deadlines, usually 49 days after judgment. A Rule 35(c) motion, also called post-conviction relief, is a separate proceeding that can raise claims outside the trial record, such as ineffective assistance of counsel or newly discovered evidence. Rule 35(c) has its own filing requirements and is not a substitute for a direct appeal.
How long does the criminal appeals process take in Colorado?
The criminal appeals process in Colorado can take several months to over a year, depending on the complexity of the case, the court's caseload, and whether further review is sought. After the notice of appeal is filed, the appellate court will set a briefing schedule, and oral argument may be held. An attorney can provide a more specific timeline based on the details of your case.
Facing a conviction is frightening, and the appeal process can feel overwhelming. The Law Offices of Robert E. Ray has defended clients across Weld County since 1975, with a reputation as a bulldog in the courtroom and bilingual services available. We offer skilled advocacy, a strong defense against serious allegations, and decades of experience in local courts. Contact us today to protect your future.
