Responsibility for maintenance of a patent is the exclusive right holder. Therefore, should the holder to monitor the market to determine the possible infringement of a patent, and if he has to take appropriate measures to prevent misuse. If you are not well informed about the patent rights in the event of a dispute regarding violation of law, it is advisable to seek help from a professional agent.

A patent shall cease to have effect after 20 years with non-payment of annual fees for maintenance of law and drop or Office shall cancel the decision to grant the patent.