Under the False Claims Act, an action must be filed within six years from the date of the violation or three years after the government knows or should have known about the violation. But in no event can an action be taken longer than ten years after the violation.
Whistleblowers must follow the first-to-file rule. Under this rule, only the first person to file a case under the False Claims Act is entitled to a whistleblower reward. If you file your case even one day after another whistleblower who files the same case, you can lose your right to receive a reward.