What an appeals court actually reviews
An appellate court does not hold a new trial or hear new witnesses. It reviews the record from the lower court, meaning the filings, transcripts, and exhibits, and decides whether a legal error affected the result. Arguments that were not raised below are often treated as lost, which is why what happened during the original proceedings shapes the appeal so heavily. Findings of fact usually get more deference than rulings on the law. In New York, civil appeals from the trial court typically go to the Appellate Division, and only some matters continue from there to the Court of Appeals, the state's highest court. Federal cases go to the circuit court of appeals for that region.
The clock and the cost
The time to file a notice of appeal is short, and in New York state court it often runs from when the judgment or order is served with notice of entry, not from when you first hear about the decision. Missing it can end the appeal before it begins. Filing an appeal does not by itself stop the other side from enforcing a money judgment; a stay usually takes a further step, often posting an undertaking or bond. Preparing the record and transcripts carries real costs as well. If the decision went against you, getting these pieces in motion quickly keeps options open.
Deciding whether to go forward
Bring the decision, the judgment or order, and anything showing when and how it was served on you. If the appeal will be handled by someone other than the trial lawyer, the trial file and transcripts matter too. We look at which rulings are open to challenge, what standard of review would apply to each, and whether the issues were properly preserved. Sometimes the more useful path is a motion in the trial court, or a negotiated resolution while an appeal is pending. Criminal appeals follow their own rules and deadlines, so tell us at the outset if a conviction is involved.