French lawyer Isabelle Coutant-Peyre is said to be in Iran for talks with the regime over the lawsuit. Coutant-Peyre became famous for defending notorious terrorist Ilich Ramirez Sanchez — also known as Carlos the Jackal.
The move comes after Iranian cultural officials and movie critics screened the film in a closed audience in a Tehran theatre yesterday.
Argo has not appeared officially in Iran. The story is based on the real-life escape of six American hostages from the besieged US Embassy in Tehran in 1979.
City Council member Masoomeh Ebtekar, who was one of the students who took part in the occupation, has said the film exaggerates the violence among crowds that stormed the compound.