Skip to Main Content
SMU Libraries

How do I note up cases?: Home

What is noting up?

Noting up refers to the process of examining how a case has been treated in subsequent cases to determine if it is still authoritative or “good law”.  This involves checking if the relevant case has been reversed on appeal or overruled by a superior court in a later case.

You may also want to find other cases that have applied the law based on similar facts or later cases that have considered the case and may assist in terms of aiding judicial interpretation of the law. 

In the United States the process of noting up is referred to as Shepherdizing. This term is also used in LexisNexis. In Westlaw it is referred to as KeyCite.

You can use a variety of databases and methods to note up. This guide will provide guidance on how to note up using Lawnet, Lexis, Westlaw and JustisOne. 


In order to verify that a case is still considered good law, you have to refer to how it is treated in subsequent judgments. Usually certain expressions are used to annotate the status of the case within the judgment. Those with similar annotations will usually be grouped together. 

Expressions for case annotations may differ from country to country. For Singapore, cases are annotated in the following way:


Research Librarian

Profile Photo
SMU Libraries
The use of electronic resources must comply with the Appropriate Use of Electronic Resources Policy and Singapore Management University Acceptable Use Policy