For Javier Lopez, a partner at Coral Gables firm Kozyak Tropin & Throckmorton, more than money is at stake in the $792 million lawsuit he filed in July on behalf of a family whose bank was expropriated by Fidel Castro’s government.

His uncle was a political prisoner in Cuba for 30 years, and his hotelier family fled in the revolution. For years, he watched in frustration as subsequent U.S. presidential administrations suspended Title III, a provision within the 1996 Helms-Burton Act that allows Cuban Americans to sue companies who are profiting from land confiscated by the Castro regime in 1959.