Yes, in many cases you can appeal a Pennsylvania criminal conviction on the grounds that a witness committed perjury, but which legal process applies depends heavily on timing. Judges and juries in Pennsylvania criminal trials often base the majority of their decisions on the testimony of witnesses, so when a witness knowingly lies under oath, the effect on a verdict can be significant. Pennsylvania law generally treats perjury that is already part of the trial record differently than perjury discovered only after your direct appeal deadline has passed, and understanding which path fits your situation matters just as much as proving that the lie occurred. Filing the wrong type of petition, or filing the right one too late, can mean losing the ability to raise a legitimate perjury claim at all, regardless of how compelling the underlying facts turn out to be.
At Rubin, Glickman, Steinberg & Gifford, P.C., our criminal defense attorneys have represented Pennsylvania clients in criminal matters since the firm’s founding in 1952, and we regularly help people sort out whether a direct appeal or a post-conviction relief petition is the correct way to appeal your conviction when false testimony played a role in the outcome. Because the deadlines in both processes are strict and largely non-negotiable, getting an early read on your options can help preserve rights you might otherwise lose.
What Counts as Witness Perjury in a Pennsylvania Criminal Case?
Black’s Law Dictionary defines perjury as the intentional assertion of a false statement during a judicial proceeding by a witness who is under oath. In practice, this covers testimony given from the witness stand as well as false statements made in a signed, sworn affidavit. The key word is intentional. A witness who is simply mistaken, confused, or wrong about a detail has not committed perjury, even if that mistake helped convict you, because criminal trials in Pennsylvania require proof that the false statement was made knowingly.
Consider a hypothetical example. Say you are accused of killing a store manager during a robbery, and the state’s key witness is your alleged accomplice. On the stand, he testifies that you planned the robbery and fired the shot, and he claims he was promised nothing in exchange for his cooperation. In reality, the prosecutor had assured him that she would seek a reduced sentence if he testified against you. If he stated under oath that no such promise existed, that statement could qualify as perjury, because it was a knowing falsehood about a fact that likely influenced how the jury weighed his credibility. The same principle applies to smaller details, not just the identity of the person who committed the crime. A witness who lies about their vantage point, their relationship to the defendant, or a prior inconsistent statement they gave to police can also be committing perjury if the misstatement is knowing and relates to a material fact in the case.
How Pennsylvania’s Appeal Deadlines Work
Pennsylvania sets firm deadlines for challenging a conviction, and missing one can close off your options no matter how strong your evidence eventually turns out to be. Under Pennsylvania Rule of Appellate Procedure 903, a criminal defendant who has not filed post-sentence motions must file a notice of direct appeal within 30 days of the imposition of sentence in open court. That 30-day clock is unforgiving, and courts generally do not extend it, even for a compelling reason that only comes to light later. Filing a timely post-sentence motion can add time to the process, since the direct appeal clock then generally runs from the ruling on that motion rather than from sentencing itself, but the underlying principle stays the same: something happening on the record within a fixed, short window.
Because a direct appeal is limited to reviewing the record already made at trial, it is the right tool for challenging legal errors that already appear in that record, such as an improper jury instruction or a wrongly admitted piece of evidence. It is generally not the right tool for a claim that a witness has since admitted to lying, since that admission, by definition, falls outside the trial record. Pennsylvania law provides a separate process for that kind of claim.
Direct Appeal or PCRA Petition: Choosing the Right Path for a Perjury Claim
Because after-discovered perjury falls outside the trial record by definition, Pennsylvania’s Post Conviction Relief Act is typically the vehicle used to raise it, rather than a direct appeal. The Post Conviction Relief Act allows a person serving a sentence for a Pennsylvania crime to ask the court to vacate a conviction or sentence based on specific, statutorily defined grounds, including newly discovered facts that were not available at the time of trial. Our overview of Pennsylvania’s appellate process walks through how the direct appeal and post-conviction tracks differ in more detail.
The short version is this: if the false statement was already exposed and part of the record before your direct appeal deadline passed, your appellate attorney may be able to raise it as an issue on direct appeal. If you only learned about the lie afterward, whether through a witness recanting, a co-defendant’s later statement, or newly available evidence, a petition citing the newly discovered facts exception is usually the applicable route, and the timing of when you learned about it becomes a central part of your case.
PCRA Filing Deadlines for Newly Discovered Perjury
PCRA petitions carry their own strict timing rules. As a general matter, a petition must be filed within one year of the date your judgment of sentence became final. Pennsylvania law provides a narrow exception for claims based on facts that were unknown to you and that could not have been discovered earlier through reasonable diligence, which is the category most witness perjury claims fall into.
When that exception applies, you generally have one year from the date you could have first presented the claim, not one year from your original sentencing, to file your petition. Our overview of Pennsylvania’s Post Conviction Relief Act covers the process in more depth, including who is eligible to file and what relief may potentially be available. Because these deadlines run from the date the underlying facts became knowable rather than from your conviction, documenting exactly when and how you learned about the perjury is important to preserving your claim.
The Legal Standard for After-Discovered Evidence Claims
Learning that a witness lied is only the first step. To obtain a new trial or other relief based on after-discovered evidence, Pennsylvania courts generally require you to show four things: that the evidence was discovered after trial and could not have been obtained earlier through reasonable diligence, that it is not merely corroborative or cumulative of evidence already presented, that it is not used solely to attack a witness’s general credibility, and that it is of a nature likely to produce a different result if a new trial is granted.
The third and fourth elements of that standard tend to be where perjury claims are won or lost. Courts distinguish between evidence offered only to suggest a witness is generally untrustworthy, which usually does not support relief on its own, and evidence that a witness lied about a fact central to your guilt, which can carry far more weight. Judges also scrutinize the credibility of a later recantation itself, since a witness who comes forward years later with a different story is not automatically believed. If you are already in a PCRA proceeding built around this kind of claim, our post on why you should not cooperate with the district attorney during a PCRA proceeding covers another pitfall that can weaken an otherwise strong case.
Other Common Grounds for Appealing a Criminal Conviction
Witness perjury is only one of several grounds Pennsylvania courts recognize for overturning a conviction, and it is often worth evaluating your case for others at the same time. Ineffective assistance of counsel can apply if your trial attorney’s performance fell below an objective standard of reasonableness and that failure affected the outcome of your case. Prosecutorial misconduct, such as withholding evidence favorable to the defense, improper jury instructions that misstate the applicable law, and the wrongful admission or exclusion of evidence are other issues frequently raised on appeal. Sentencing errors, including a sentence outside the legal range or one that misapplies the sentencing guidelines, can also support relief in some cases, even when the underlying conviction itself is not in question.
Faulty eyewitness identification is a related and surprisingly common problem. Our discussion of the unreliability of eyewitness testimony in Pennsylvania explains how memory, stress, and suggestive identification procedures can lead a witness to honestly, but wrongly, identify the person they believe committed a crime. That kind of mistaken testimony differs from perjury, since it lacks an intentional falsehood, but it can sometimes be challenged through some of the same appellate tools.
Steps to Take if You Believe a Witness Lied Under Oath
If you suspect that a witness lied during your trial, what you do in the days and weeks after finding out can affect whether that claim ultimately holds up in court. Consider taking the following steps as soon as possible:
- Write down what you know. Record the date you learned of the lie, how you learned of it, and every detail the source shared, while your memory of the conversation is still fresh.
- Preserve any proof. Save text messages, letters, recordings, or documents that support the claim, and avoid altering or widely discussing them before speaking with an attorney.
- Avoid contacting the witness directly. A conversation you have with the witness could complicate your case or raise separate legal issues, so let your attorney handle that outreach instead.
- Move quickly. Both direct appeal and PCRA deadlines are measured in days or months rather than years, so delay can cost you the claim entirely.
Acting on incomplete information is a common mistake in these cases, and a Pennsylvania criminal appeals attorney can help you assess whether what you have uncovered meets the legal standard before you file anything with the court. In many instances, the strength of a perjury claim comes down to corroboration: a witness’s private admission to a friend or family member carries less weight on its own than that same admission paired with a text message, a recorded call, or a sworn statement from the person who heard it firsthand.
What Realistically Happens After a Successful Claim
It helps to have realistic expectations going into a direct appeal or a PCRA petition built around witness perjury. Winning does not typically mean the court declares you innocent and closes the case. In most instances, a successful claim results in the court vacating your conviction, your sentence, or both, and ordering a new trial. From there, the case returns closer to where it stood before your original trial, except this time the previously false testimony is out of play, or at minimum, its credibility has been seriously called into question.
That distinction matters because a new trial still requires the prosecution to prove its case, and it still requires your defense to present one. The outcome of that second proceeding is not guaranteed by the fact that you won your appeal or PCRA petition. Other issues can also affect what happens next. If a court finds that only part of your conviction was tainted by the perjured testimony, for example, relief may apply to some counts and not others. An attorney who has reviewed the full record can give you a clearer sense of what a favorable ruling would likely mean for your specific case, rather than relying on assumptions about how these proceedings typically end.
How Our Criminal Appeals Team Can Help
Rubin, Glickman, Steinberg & Gifford, P.C. has represented individuals and families across Montgomery County, Bucks County, and the surrounding areas since 1952, and our criminal defense team includes attorneys with backgrounds as former county prosecutors and board certifications in criminal law from the National Board of Trial Advocacy. When a client comes to us believing a witness lied under oath, we start by reviewing the trial transcript and any new information line by line to determine whether a direct appeal, a PCRA petition, or another remedy fits the facts.
From there, we can help gather and preserve supporting evidence, evaluate whether the after-discovered evidence standard can likely be met, and prepare and file the petition or brief within the applicable deadline. Because these cases often turn on details that are easy to overlook without appellate experience, an early case review can help you understand your realistic options while there is still time to act on them.
Frequently Asked Questions About Appealing a Conviction Based on Witness Perjury
What is considered witness perjury in a Pennsylvania criminal case?
Perjury is the intentional assertion of a false statement made under oath during a judicial proceeding, whether given on the witness stand or in a signed, sworn affidavit. The lie must be knowing and material, meaning the witness understood the statement was false and it related to a fact that could reasonably affect the outcome of the case. A witness who is simply mistaken, confused, or has an honest lapse in memory has not committed perjury, even if that testimony contributed to a conviction.
Can I appeal a criminal conviction directly because a witness committed perjury?
Generally, not through a direct appeal alone, unless the false statement and proof of it were already part of the trial court record before your direct appeal deadline expired. Direct appeals are limited to reviewing what happened in the trial court, so evidence discovered afterward, such as a later recantation, typically cannot be raised that way. In most cases, perjury discovered after trial is addressed through a Post Conviction Relief Act petition instead.
How long do I have to file a PCRA petition based on newly discovered perjury?
As a general rule, a Post Conviction Relief Act petition must be filed within one year of the date your judgment of sentence became final. When a petition relies on facts that were unknown and could not have been discovered earlier through reasonable diligence, such as a witness who only recently admitted to lying, Pennsylvania law generally allows one year from the date the claim could have been presented instead. Documenting exactly when you learned of the perjury can help support that timeline.
What must I prove to get a new trial based on after-discovered evidence?
Pennsylvania courts generally require proof of four things: the evidence was discovered after trial and could not have been found earlier through reasonable diligence, it is not merely corroborative or cumulative, it is not used solely to attack a witness’s general credibility, and it is likely to produce a different result if a new trial is granted. Courts scrutinize a witness’s later recantation carefully, since coming forward with a new story years later does not automatically make that new story credible.
What happens if my appeal or PCRA petition is granted?
Relief in these cases usually means the court vacates your conviction or sentence and orders a new trial, rather than dismissing the case outright or guaranteeing a particular result. A new trial gives both sides the opportunity to present evidence again, this time without the false testimony, but it does not by itself decide the outcome. The relief that may be available can vary depending on the grounds raised and the stage of your case, so it is worth discussing realistic possibilities with an attorney before filing.
Can I still appeal if I pleaded guilty?
Pleading guilty limits, but does not always eliminate, your appellate options. Defendants who plead guilty generally waive most trial-related issues, but claims involving the voluntariness of the plea, the legality of the sentence, or certain after-discovered evidence issues may still be available in some circumstances. If witness perjury contributed to your decision to plead guilty, for example because you were led to believe the state’s case was stronger than it actually was, that history may be worth raising with an appellate attorney.
Talk to a Pennsylvania Criminal Appeals Attorney
Choosing between a direct appeal and a PCRA petition, and building the evidentiary record either one requires, is not something most people should try to work through alone, especially while facing strict, unforgiving deadlines. Our attorneys have handled criminal appeals and post-conviction matters throughout Montgomery County, Bucks County, and the surrounding Pennsylvania counties for decades, and several members of our team hold board certifications and honors recognized by their peers in the field. That kind of appellate experience matters when a case turns on a strict filing deadline or a multi-part legal standard, since a missed technical requirement can end a claim before a judge ever reaches the merits of the perjury itself.
If you believe a witness lied under oath during your criminal trial, do not wait to find out whether that lie can support an appeal or a PCRA petition. The sooner you speak with an attorney, the more options you are likely to have preserved. Contact us today to schedule a free, confidential consultation about your case.
Rubin, Glickman, Steinberg & Gifford P.C.
Pennsylvania Attorney's
August 7, 2026
