According to the “On Protection of Consumer Rights” law the warranty service can be provided even if there’s no warranty card. It’s enough to provide a receipt and the serial number of the product, which is indicated on the package. You don’t need a warranty card to return the product.
If there’s a warranty card, you can fill it out yourself 14 days after you receive your order. In the Purchase date field, specify the order receipt date. Don’t fill out the card until the return period has passed.