The search group says it spent more than $100,000 searching for Caylee, who Anthony already knew was dead.
Anthony was acquitted of murder in the girl’s death during a 2011 trial and has been in hiding ever since.
In a press release after the settlement, EquuSearch said the decision to settle came “after considerable thought.”
“While many have debated whether Casey Anthony will ever financially profit from Caylee’s death, one thing is certain; the time and money that (EquuSearch) must spend to pursue these claims are being taken from other families that really need their help,” said EquuSearch lawyers Wites & Kapetan, P.A. and Meland Russin & Budwick, P.A.
EquuSearch was one of three Anthony creditors who filed federal complaints arguing their claims should survive her bankruptcy. The two others, Zenaida Gonzalez and Roy Kronk, have complaints still pending against her.
They say they were defamed by Anthony, but she has asked a judge to dismiss their claims, with Anthony’s attorneys calling the claims baseless.
Anthony told detectives investigating Caylee’s disappearance that a baby sitter named Zenaida Gonzalez kidnapped the girl. Kronk found Caylee’s remains in woods near Anthony’s home. He says he was defamed when Anthony’s defense team made false statements, including that Kronk killed Caylee and that he moved the remains.