A lien intended to prevent the sale of property until litigation concludes is termed:

A lien intended to prevent the sale of property until litigation concludes is known as an attachment lien. This type of lien is commonly utilized to secure a creditor’s interest in a debtor's property while legal action is pending. By placing an attachment lien, a creditor can ensure that the property cannot be sold or transferred until the outcome of the litigation is determined, thereby protecting their potential claim against the property.

In contrast, a vendee's lien typically secures the interests of a buyer in a real estate transaction until the transaction is formally completed. A mechanics lien protects the rights of contractors and laborers who have not been paid for work done on the property but does not directly relate to ongoing litigation. A mortgage lien, on the other hand, is a legal claim against property used as security for a loan, which does not apply to the scenario of preventing a sale due to awaiting litigation results.

Thus, attachment liens serve a specific legal purpose that directly corresponds to the need for securing interest during pending legal disputes, distinguishing them from the other types of liens mentioned.