Minn. Stat. § 47.208: DELIVERY OF SATISFACTION OF MORTGAGE.

Subdivision 1. Delivery required.

Upon written request, a good and valid satisfaction of mortgage in recordable form shall be delivered to any party paying the full and final balance of a mortgage indebtedness that is secured by Minnesota real estate; such delivery shall be in hand or by certified mail postmarked within 45 days of the receipt of the written request to the holder of any interest of record in said mortgage and within 45 days of the payment of all sums due thereon.

Subd. 2. Penalty.

If a lender fails to comply with the requirements of subdivision 1, the lender may be held liable to the party paying the balance of the mortgage debt, for a civil penalty of up to $500, in addition to any actual damages caused by the violation.