According to Industrial Property Law No. 6769 related with the protection of trademarks, protection duration of trademarks is 10 years from its application date and before 6 months that time runs out trademark renewal operation starts. The trademarks whose renewal operation have not been done are legally accepted as invalid, that’s why, taking back is only possible with court decision. Otherwise protection right of the trademark is impossible.
It is enough to reach us in order to take much more information about how a trademark renewal operation is done and to do renewal operation of your registered trademark.