This document discusses the concept of lien under Malaysian law. It provides definitions and elements of a lien based on case law. A lien is the right of one person to retain possession of property belonging to another person until a debt owed by that person is discharged. The key elements of a valid lien discussed are intention and depositing the title documents of the property with the lien holder. The effects of registering a lien holder's caveat and remedies available to the lien holder in the event of default are also summarized.