Michael Jackson

Despite having a cadre of lawyers, his estate plan was riddled with flaws. He had an estate plan, but no one working on that plan put any of his property into the Trust!  His assets were not in trust.

Robin Williams

He left an estate plan, but it did not include a contest provision, which would have stated anyone who contested the will would risk his or her entire inheritance. The result is an estate hung up in litigation due to lawsuits.