A dispute over a plot of land in the Russian city of Vyborg is to go before the European Court of Human Rights.
A Finnish man and his lawyer, Kari Silvennoinen, submitted an appeal to the ECHR on Monday.
The elderly Finnish man has claimed ownership rights to a plot of land that his father owned before the Winter War, when Vyborg was part of Finland. The property currently has a children's playground on it.
Previously, the European Court of Human Rights refused to take up the case, because the matter had not been taken up in a court in Russia.
The man's claims were rejected in two Russian courts this year and last.