As an AI, I don't have real-time access to the internet or …

As an AI, I don't have real-time access to the internet or databases, so I can't provide you with specific details about court cases that Landmark Education Corporation, Landmark Worldwide, or Erhard Seminar Training (EST) have lost. However, I can tell you that these organizations have faced numerous legal disputes over the years. Some of these cases have been settled out of court, while others have resulted in judgments in favor of the plaintiffs.
Some of the lawsuits filed against Landmark have involved claims of emotional distress, fraud, and breach of contract. Landmark has also faced lawsuits for defamation, where they sued critics for spreading false information about them. In some cases, these lawsuits have resulted in judgments in favor of the plaintiffs.
Please note that this general information is based on limited publicly available resources and your specific query might require deep legal research or consultation with a legal expert. In addition, the information in this answer may not accurately reflect the current status due to the passage of time since this information was retrieved.