A narrow doctrine
Fraud on the court refers to deliberate misconduct aimed at the court itself, such as fabricating evidence or bribing a witness, rather than ordinary disputes about who told the truth. Courts reserve the label for serious conduct because it can lead to dismissing a case, striking a defense, or vacating a judgment well after it was entered. In New York, courts generally require clear and convincing evidence of a knowing, intentional scheme that interferes with the court's ability to decide the case fairly. Federal courts take a similarly narrow view, and ordinary perjury between parties often does not qualify on its own.
Building the record
Proving fraud on the court depends almost entirely on documents and testimony showing the misconduct and that it was intentional. Collect the original and allegedly fabricated documents, metadata where available, testimony transcripts, and any communications that show knowledge or planning. Be careful about how new evidence is obtained, since material gathered improperly can create problems of its own. If the misconduct came to light in a related case or investigation, the records from that matter may be essential. Note when you discovered the misconduct, because delay in raising it can affect whether a court will act.
Choosing the right motion
Depending on where the case is and how far it went, the path may be a motion for sanctions in the same case, a motion to vacate the judgment, or a separate action. Each has its own standards and timing, and courts are reluctant to reopen final judgments. Assessing a fraud on the court claim means walking through the case history, the evidence of misconduct, and how it affected the outcome. We then discuss whether pursuing relief is realistic and what it would cost. Sometimes the conduct supports sanctions or a referral even when reopening the judgment is not possible. If the other side's lawyer took part in the misconduct, attorney discipline rules may also come into play.
