ELI5: What happens after a federal judge dismisses a case?

When a federal judge dismisses a case, the lawsuit is stopped and everyone goes home without a full trial.

Think of a lawsuit like two kids arguing over a toy on a playground. If they go to the playground monitor to settle it, the monitor might listen and decide there is no reason to have a big meeting. The monitor simply tells everyone to pack up and go back to playing. In the legal world, the federal judge is the monitor, and telling everyone to stop is called a dismissal.

After this happens, what comes next depends on how the judge stopped the game:

• Dismissed with Prejudice: This is like the monitor saying, "This argument is over permanently, and you are never allowed to bring it up again." The case is completely finished, and the person who complained cannot file the exact same lawsuit again.
• Dismissed without Prejudice: This is like the monitor saying, "You filled out the wrong form, or you brought this to the wrong playground. Fix your mistake and try again." The person who complained is allowed to correct their errors and bring the lawsuit back later.
• Filing an Appeal: If the person who lost feels the judge made a mistake, they can ask a higher group of judges to look at the decision. This is like asking the school principal to double-check the playground monitor's ruling.