You must leave the territory of Poland no later than the last day of:
• your visa validity, unless you have applied for a visa extension;
• your temporary residence card validity, unless you have applied for a new permit;
• your visa-free travel, if you are entitled to enter and stay in Poland without a visa,
• the validity of another entry and stay entitlement, (e.g. a residence card issued by another Schengen country), provided that the conditions for stay under that document are met;
• the 14-day period for lodging an appeal against a negative decision regarding your application for stay, if you have waived your right to appeal and you do not hold any other valid residence document entitling you to stay in Poland.
If you have lodged an appeal against a negative decision, you must leave the territory of Poland within 30 days from the day the decision of the second-instance authority is delivered to you.
If you do not leave Poland voluntarily, you may receive a decision imposing an obligation to leave the country and an entry ban to Poland and the Schengen Area.
Dictionary
In certain situations specified by law — for example, if you are staying in Poland illegally, i.e., without a valid passport or visa, or if you have exceeded the permitted period of stay under the visa-free travel — the Border Guard issues a decision obligating you to leave the territory of Poland. This obligation takes the form of a decision, which is subject to an appeal. After receiving a decision requiring you to leave Poland, you are not allowed to return for the period specified in the decision
A current document issued by the civil registry office, not earlier than three months before the submission of the application, confirming that a marriage has been concluded. In cases where the marriage certificate was issued outside Poland, a certified translation of the document must also be submitted.
A document that is not a copy. Sometimes the regulations allow you to submit a copy of a document instead of the original, but in that case, the copy should be certified (confirmed as a true copy of the original). A copy of the document may be certified by an official who receives the original document, then it is marked with a stamp and a signature of the responsible official. The authentication (certification) can also be performed by a notary public, as well as a legal adviser/attorney-at-law if acting as your proxy/representative.