Olga Dolgikh

Olga Dolgikh, head of department / patent attorney/ mechanics engineer, will give you detailed advice

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+7 495 775-16-37

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Annual Maintenance of a Patent

If you want to protect your invention, you need to pay the official annual fee which you may do until the end of 20 years period of its validity.

If the fee is not paid, the patent becomes invalid and any person can start exploiting the invention covered by the patent.

The patent can be renewed within a three years period of non-payment of annual fee.

Annual Maintenance Cost