Russia and Georgia became caught up in an intense diplomatic row last September when Russia deported hundreds of Georgians, cut off mail and transport links with Tbilisi as well as cracking down on 'illegal' Georgian businesses.
"This will be a lawsuit of one country against another. The Georgian Justice ministry will not make any official statements until the lawsuit has been prepared," she said adding that the date for submission of the lawsuit expires March 29.
She also denied earlier reports circulated by Georgian media that the lawsuit will be filed with the Strasbourg court on Monday by Georgian ambassador to the Council of Europe Zurab Chiaberashvili.
"The information is not correct," she said. "The lawsuit is being prepared by the Ministry of Justice and it will be submitted to the European court also by the [Justice] ministry."
Relations between Georgia and Russia have been strained ever since the Western-leaning government of President Mikheil Saakashvili came to power in 2003. Last March Russia banned Georgian wine and mineral water, dealing a heavy blow to the ex-Soviet republic's fragile economy.
The political row deteriorated further last September after Georgia's brief detention of four Russian officers on espionage charges, and was later exacerbated by Tbilisi's subsequent threat to withdraw its support for Russia's WTO bid.