There are three kinds of common courts in Poland:
- Sąd Rejonowy (District Court) - the court of 1st instance where most cases are handled
- Sąd Okręgowy (Regional Court) - the court of 2nd instance for all the decisions of the District Courts that were appealed + Regional Courts act as courts of 1st instance for serious crimes and civil cases regarding sums in excess of PLN 75 000 (also for divorce cases)
- Sąd Apelacyjny (Appelate Court) - the court of 2nd instance for the decisions of the Regional Courts that were appealed
In Polish legal system you always have the right to appeal (once) from the decision of the court of 1st instance. The courts' of 2nd instance decisions are final and cannot be appealed further.
At the top of the judicial pyramid is the Supreme Court in Warsaw which handles cassation appeals from the decisions of the 2nd instance courts. Unfortunately cassation appeals are restricted to the most serious cases, so most cases don't qualify for it.