Final answer:
A notice filed to indicate that real property is in litigation, known as a lis pendens, serves as a public notice to prevent transfers or claims on the property during an ongoing lawsuit.
Step-by-step explanation:
The purpose of a notice filed to warn all persons that the title or right to possession of certain real property is in litigation is to prevent any transfers or claims against that property while the issue is being resolved in court.
This notice, commonly referred to as a lis pendens, is a legal document recorded in the public record to indicate that there is an ongoing lawsuit concerning the property.
Such a notice is important because it serves to notify prospective buyers or creditors that there is a dispute over the property which could affect their interests.