At the last hearing in July, Judge Oded Gershon said he would deliver a verdict in April 2012. The verdict has been postponed due to delays in the filing of closing arguments, the foundation said in a statement.
A new verdict date has not been set, the foundation added.
Corrie, a US student, was crushed to death by an armored D9 bulldozer in March 2003 while protesting the demolition of a Palestinian home in southern Gaza by Israeli forces.
Activists who witnessed the 23-year-old's death said she was clearly visible to the soldier driving the bulldozer.
Corrie's parents were dissatisfied with the Israeli military's investigation and are suing the state of Israel and the defense ministry for $1 plus costs. Maan News Agency