Illinois criminal defendants have a right to appeal — but appeals are limited to legal errors preserved at trial, run on tight deadlines (often 30 days), and reverse only ~10% of cases.
Published May 9, 2026
## Criminal appeals in Illinois
After a conviction, defendants have a right to appeal to a higher court. Appeals are NOT a re-trial — they review legal errors made at trial. Limited but important.
## What appeals can do
- Reverse conviction outright
- Reverse + remand for new trial
- Modify sentence
- Affirm in part / reverse in part
- Identify legal precedents
## What appeals CANNOT do
- Re-try facts (jury's job)
- Reweigh evidence
- Hear new evidence (limited exceptions)
- Substitute appellate judge's view of facts
- Reconsider plea deals (limited)
## ${s.name} appeals court structure
**Typical levels:**
1. **Trial court** (where convicted)
2. **${s.name} Court of Appeals** (intermediate appellate)
3. **${s.name} Supreme Court** (highest state)
4. **U.S. Supreme Court** (rare — federal questions only)
Plus federal habeas (separate process — see post-conviction relief).
## Who can appeal
**Right to appeal:**
- Defendants convicted at trial
- Some defendants who pled guilty (limited issues)
- The government (limited grounds in most states)
**Loss of right by:**
- Plea deals waiving appeal
- Failure to file timely notice
- Voluntary dismissal
## Critical deadlines — DON'T MISS
**Notice of appeal:**
- Typically 10-30 days from sentencing
- ${s.name} has specific deadline
- File with TRIAL court (not appellate)
- Strict — almost never extended
- One missed deadline = appeal forfeited
**Briefing schedule:**
- Set after notice filed
- Opening brief, response, reply
- Extensions sometimes available
- Court enforces strictly
## Issues raised on appeal
**Common appellate issues:**
- Improper jury instructions
- Evidentiary rulings (admission / exclusion)
- Constitutional violations (4th, 5th, 6th, 8th Am.)
- Sufficiency of evidence
- Sentencing errors
- Prosecutorial misconduct
- Improper jury argument
- Defective indictment
- Speedy trial violation
- Double jeopardy
**Critical concept — preservation:**
- Issues must be "preserved" at trial
- Objection must be made + on the record
- Failure to preserve = "plain error" review (much higher standard)
- Trial counsel's job at trial
## Standards of review
**Different issues get different scrutiny:**
- **De novo** (no deference) — pure legal questions
- **Abuse of discretion** — many trial-court decisions
- **Sufficient evidence** — substantial evidence in light most favorable to verdict
- **Plain error** — unpreserved errors
- **Harmless error** — most errors require showing of prejudice
- **Structural error** — automatic reversal (very rare)
**Most preserved errors require showing of prejudice = different result likely.**
## The appellate record
**The court reviews:**
- Trial transcripts
- Pretrial transcripts
- All exhibits
- Jury instructions
- Court file (motions, etc.)
- Limited materials only
**Cannot consider:**
- New evidence (with rare exceptions)
- Witness statements not in record
- Trial counsel's claimed strategies (use post-conviction)
- New legal arguments not raised below (with rare exceptions)
## Appellate brief — the heart of the appeal
**Opening brief:**
- Statement of case + facts
- Statement of issues
- Argument (50-150 pages typical)
- Citations to record + cases
- Specific relief requested
- Polished + persuasive
**Briefs win cases. Oral argument rarely changes results.**
## Oral argument
**Discretionary in most cases:**
- 15-30 minutes per side typical
- Questions from judges dominate
- Tests + clarifies briefs
- Most courts don't grant in every case
## Timeline
**Typical schedule:**
- Notice: 10-30 days from sentencing
- Record preparation: 30-90 days
- Opening brief: 30-60 days from record
- Response: 30-60 days
- Reply: 14-21 days
- Oral argument scheduled (if any)
- Decision: 3-12 months after submission
**Total: typically 1-3 years from conviction to decision.**
## Possible outcomes
**Affirmed (most common, ~85-90%):**
- Conviction stands
- Further review possible (state supreme, US Supreme)
- Post-conviction options remain
**Reversed + remanded:**
- Conviction vacated
- New trial ordered
- Or specific issue addressed
- Government decides whether to retry
**Modified:**
- Sentence reduced
- Conviction reduced (lesser included)
- Specific terms changed
**Reversed outright:**
- Conviction vacated
- No retrial (insufficient evidence)
- Defendant freed
## Bail / release pending appeal
**Generally HARDER than pre-trial:**
- Discretionary (judge's choice)
- Conviction creates presumption of guilt
- Less common than pre-trial release
- Often denied for serious offenses
- ${s.name}-specific procedures
## After ${s.name} appellate court
**${s.name} Supreme Court:**
- Discretionary review
- Petition for review / cert
- 30-90 day window
- Limited to specific issues
**U.S. Supreme Court:**
- Federal constitutional issues only
- Cert petition (90 days)
- Granted in <1% of petitions
- Even if heard, usually narrow ruling
**State post-conviction (collateral attack):**
- Different proceeding
- Different issues (IAC, new evidence, etc.)
- See post-conviction-relief guide
**Federal habeas:**
- After exhausting state options
- 1-year AEDPA deadline
- Strict procedural rules
## Cost considerations
**Public defender appeals:**
- Free for indigent defendants
- ${s.name} appellate public defender
- Quality varies but often good
**Private appellate counsel:**
- $10K-$50K+ typical
- Varies by complexity
- Specialty practice (different from trial)
**CJA (federal) panel:**
- Federal-court appointed
- Federally-funded
## Strategic considerations
**Should you appeal?**
**Pros:**
- Possible reversal
- Possible sentence reduction
- Preserves federal habeas options
- Sometimes reveals new issues
**Cons:**
- Time-consuming
- Costs (if private counsel)
- Re-traumatizes
- Most lose
- Sometimes draws attention to negative facts
**Settlement options on appeal:**
- Sometimes prosecutor stipulates remand for resentencing
- Sometimes plea offers withdrawn
- Rare but possible
## Different counsel for trial + appeal
**Often beneficial:**
- Fresh perspective
- Trial counsel can't argue own ineffectiveness
- Different skills + temperament
- Specialty practice
**But sometimes:**
- Trial counsel knows record
- Continuity
- Cost considerations
## What you should do
If you (or a loved one) was convicted in Illinois: file notice of appeal IMMEDIATELY (10-30 day deadline) — do not wait. If indigent, request appointed appellate counsel. If retaining private counsel, look for criminal-appellate specialists. Many Illinois criminal defense attorneys handle appeals; some specialize. Even if appeal seems weak, filing preserves federal habeas options.
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*This guide is general information about Illinois law as of mid-2026 and is not legal advice. Appeals are technical + time-sensitive. Talk to a licensed Illinois criminal defense / appellate attorney about your specific case.*
This guide is for general information only and does not constitute legal advice. Laws change and outcomes depend on your specific situation — talk to a licensed attorney before acting on anything you read here.