The Top 7 Grounds to Appeal a Criminal Conviction (2024)

The most common grounds for appeal of a criminal conviction are improper admission or exclusion of evidence, insufficient evidence, ineffective assistance of counsel, prosecutorial misconduct,jury misconductand/or abuse of discretion by the judge.

Generally, the appellant must show not just that one of these errors occurred, but also that there is a reasonable probability that it affected the outcome of the case.

In this article, ourCalifornia criminal appellate attorneys¹explain the types of legal issues that are appropriate for appellate review in California by addressing the following:

• 1. Overview of California’s Appellate Process
• 2. To Win an Appeal, You Must Show That “Legal Error” Occurred at the Trial Court
  • 2.1. To win on appeal, you must show that the errors were “prejudicial”
• 3. Specific Grounds on Which to Appeal
  • 3.1. False arrest
  • 3.2. Improper admission or exclusion of evidence
  • 3.3. Insufficient evidence
  • 3.4. Ineffective assistance of counsel
  • 3.5. Prosecutorial misconduct
  • 3.6. Jury misconduct
  • 3.7. Sentencing errors
• 4. Possible Remedies if YouWin Your Appeal

If, after reading this article, you would like more information, we invite you to contact us at Shouse Law Group.

1. Overview of California’s Appellate Process

When a defendant is the victim of an unfair trial or an unjustly harsh sentence, he/she may file a California criminal appeal.

An appeal is a request for a higher court (that is, an appellate court) to review a decision of a lower court (that is, theSuperior Court, frequently referred to as the trial court). An appeal isnot a new trial. The appellate court does not:

• retry the case,
• examine new evidence, or
• accept testimony from witnesses.

The only job of the appellate court is to review the proceedings that took place in the trial court to determine if there were anylegal errors that substantially affected the rights of either party. The appellate court performs this job by reviewing:

• the record of the Superior Court (that is, a court reporter’s transcript which is a transcription of all oral proceedings),
• the clerk’s transcript (that is, a compilation of all exhibits, documents, motions, etc. that evidenced any written communication), and
• the arguments presented by the attorneys (these arguments are presented both in writings – known as “briefs” – and verbally during oral argument).

If you are filing amisdemeanor appealin California, you file your appeal with the “Appellate Division of the Superior Court”. If you are filing a Californiafelony appeal, you file it with theCalifornia Court of Appeal.²

For a more detailed explanation of the specific steps involved in California’s appeal process, please review our article onCalifornia’s Appeal Process.

2. To Win an Appeal, You Must Show That “Legal Error” Occurred at the Trial Court

It bears repeating that California appellate courts are only concerned withlegalerrors. If the trial court committed a “legal” error, it means that someone involved with the original case acted in such a way that didn’t comply with California law.

Examples of legal issues include (but are not limited to):

• whether the judge improperly admitted or excluded evidence,
• whether the judge improperly instructed the jury,
• whether the prosecutor acted unethically or the defense attorney was guilty of ineffective assistance of counsel, and
• whether the judge abused his/her discretion when sentencing the defendant.

Issues such as

• the credibility of a witness,
• the value of a certain piece of evidence, and
• whether the defendant is innocent or guilty

are considered questions offactand are exclusively within the jurisdiction of the trial court. Because the jurors and the trial judge were in a position to evaluate any relevant questions of fact, the appellate court gives deference to those issues and assumes they were decided correctly.

2.1. To win on appeal, you must show that the errors were “prejudicial”

But determining that there was a legal error is not enough by itself to overturn a conviction or sentence. The appellate court must additionally conclude that the error prejudiced one of the parties. “Prejudice” is shown when there is a reasonable probability that the legal error made a difference in the outcome of the case.

If the appealing party – that is, the “appellant” – can’t prove that the legal error was prejudicial, the appellate court will not modify the trial court’s rulings.

As California appellate lawyer John Murray³ explains:

“When the Court of Appeal conducts its review, it does so assuming that the lower court proceedings complied with the law. It is therefore up to the appellant to convince the Court that (1) the police, prosecution, or judge made a legal error during the pre-trial investigation, trial, orsentencing hearing,and(2) that the error was prejudicial to his/her case.”

3. Specific Grounds on Which to Appeal

There are a variety of grounds on which to appeal a California conviction. The chances of overturning a California conviction on appealdepend on the strength of your argument. Some of the strongest arguments that establish these grounds include (but are by no means limited to):

3.1. False arrest

If the officers didn’t have the proper authority to arrest you, your case may be overturned on appeal. This means that if, for example, the officer

• lackedprobable causewhen he/she detained or arrested you,
• arrested you in the absence of an arrest warrantand without complying with the appropriate arrest warrant exceptions, or
• violatedCalifornia search and seizure lawsin the course of arresting you.

then your false arrest acts as alegal defenseand could be an appropriate ground on which to base a California appeal.

3.2. Improper admission or exclusion of evidence

As part of every jury trial, before the jury is called in to hear the evidence, the judge holds a special hearing with just the lawyers. At this hearing, the judge decides what pieces of evidence the attorneys are allowed – or not allowed – to present to the jury. We call these “motion in limine” hearings or “Penal Code 402” hearings.

As you might imagine, the prosecutor wants to bring in incriminating and prejudicial evidence that will make the jury want to convict. Furthermore, the prosecutor often wants to stop the defense from being able to present “exculpatory” evidence that tends to support the accused.

The defense lawyer, on the other hand, wants to present all the exculpatory evidence he or she can – and to limit the incriminating stuff the prosecutor is permitted to present.

The judge listens to all the arguments and then decides what comes in and what stays out.

The point is this: Judges can get it wrong!

They sometimes make mistakes – big mistakes – in ruling on the admission and exclusion of evidence. When they do, this can be a fruitful ground on which to appeal the criminal conviction.

3.3. Insufficient evidence

Sometimes the juries, too, get it wrong.

The jury makes a decision based on emotion or prejudice rather than the facts and the law. Jurors convict a defendant even when there isn’t compelling evidence to support a guilty verdict.

Fortunately, California criminal law requires that the prosecution fulfill its burden of proving guilt beyond a reasonable doubt. “Beyond a reasonable doubt” is the highest legal standard of proof. It essentially means that the evidence is so strong that there is no logical explanation other than the fact that the defendant committed the crime(s) charged.⁴

When the prosecution fails to prove its case beyond a reasonable doubt, but the jury nevertheless convicts, we can appeal the criminal conviction on the grounds of insufficient evidence.

3.4. Ineffective assistance of counsel

Sometimes it’syour attorney who committed a legal error, not the judge or jury. When you can prove that your trial lawyer was incompetent – that is, that his/her performance was so flawed that it deprived you of yourSixth Amendment right to a fair trial – you may be entitled to a new trial based on a claim ofineffective assistance of counsel.

The Court of Appeal will presume that your attorney’s actions fell within the wide range of acceptable professional assistance and that any action or inaction can be justified as a matter of trial strategy.⁵

However, ineffective assistance of counsel is a proper ground on which to appeal a criminal conviction if you can prove that

1. the attorney’s conduct was deficient because his/her representation fell below an objective standard of reasonableness under prevailing professional norms,AND
2. the attorney’s failure to act competently resulted in actual prejudice.⁶

3.5. Prosecutorial misconduct

If the prosecutor engaged in a dishonest act or attempted to persuade the jury or the court by using improper methods, and those acts were so prejudicial that the judge couldn’t correct the situation by either

1. instructing the jury to disregard the improper act, and/or
2. striking the evidence or prosecutor’s statement.

you may be entitled to a new trial on the basis ofprosecutorial misconduct.⁷Some examples of prosecutorial misconduct include (but are not limited to):

• commenting on inadmissible evidence,⁸
• purposely misstating the law or evidence,⁹and
• appealing to the jury’s passions or prejudices.¹⁰

But remember: it’s not enough that the prosecutor act unethically. His/her actions must also cause prejudice. And when they do, this ground on which to appeal a conviction will almost always lead to a favorable ruling.

3.6. Jury misconduct

When jurors engage in inappropriate or even illegal behavior, that compromises a defendant’s right to a fair trial. This type of behavior – referred to as juror misconduct or jury misconduct – provides yet another ground on which to appeal a conviction.

Some examples of jury misconduct include (but are not limited to):

• refusing to deliberate,
• conducting a factual investigation that goes beyond the admitted evidence, and
• purposely concealing relevant information that could affect an impartial deliberation.¹¹

But (as is the case with the other grounds mentioned above) you will not prevail in your appeal by a mere showing that the jury engaged in misconduct. You must also prove that that misconduct most likely affected the outcome of your jury trial.

Yet unlike the other grounds above, jury misconduct creates a rebuttable presumption of prejudice. This means that the burden is on the party opposing the appeal (known as the “respondent”) to prove that the misconduct did not cause prejudice.¹²

In other words, defense appeals based on jury misconduct are easier to win!

3.7. Sentencing errors

Sentencing errors often provide a successful ground on which to appeal the sentence imposed by the judge.

Before a judge can punish a defendant, he/she must comply with the rules that govern sentencing hearings. Sometimes this means that the judge must clearly state his/her reason for choosing a particular sentence. Other times it means that a judge may only impose a sentence on one charge, even when a defendant is convicted of multiple charges. And under some circ*mstances, it means that a judge must order multiple sentences to be served simultaneously instead of consecutively (which makes for a shorter sentence).

When a judge ignores these sentencing rules, he/she imposes an “illegal sentence.” If we can convince the Appellate Court that the judge sentenced you illegally, the Court will remand the case to the trial court and order the trial judge to sentence you appropriately.

This can cause you to be “resentenced” to significantly less time.

4. Possible Remedies if You Win Your Appeal

Let’s say the appellate court agrees with you that “prejudicial legal error” occurred at the trial court level. So you win the appeal! But what happens now?

The type of remedy that the Court of Appeal will issue depends on the grounds on which we appeal your California conviction. Typically, there are three remedies that a successful appeal may generate.

The first is areversal. If, for example, we can show that there was insufficient evidence to support your conviction, the Court may reverse your conviction and dismiss the charges against you. In other words, you walk!

The second remedy is anew trial. If, for example, we succeed in our claim of ineffective assistance of counsel, the Court will grant you a new trial, where you will be represented by a different attorney (which might even be us, if we stay on the case through the new trial). The chances of winning at the new trial will almost always be better.

The third option is aremand. When the Court of Appeal “remands” your case, it means that it “sends it back” to the trial court with instructions on how to cure the error. This is typically the case when you are the victim of an illegal sentence.

Call us for help.

If you or a loved one is in need of help with appeals and you are looking to hire an attorney for representation, we invite you to contact us at Shouse Law Group. We can provide a free consultation in the office or by phone. We have local offices in Los Angeles, the San Fernando Valley, Pasadena, Long Beach, Orange County, Ventura, San Bernardino, Rancho Cucamonga, Riverside, San Diego, Sacramento, Oakland, San Francisco, San Jose and throughout California.