Once you have identified useful cases, it is important to update the cases before you rely on them. Updating case law means checking to see if it is still "good law." Using Shepard's on LexisNexis Academic, you can determine if a case has been expressly reversed oroverruled or otherwise impacted by subsequent authorities. Shepard's links to authorities that have mentioned your case. It is the researcher's responsibility to see if being mentioned by other courts may have impacted the case.
On LexisNexis Academic, find the case you want to update. In the upper left-hand corner, you will see one of the following symbols:
|Warning||Negative treatment indicated. Includes the following analyses:
|Questioned||Validity questioned by citing references. Includes the following analyses:
|Caution||Possible negative treatment indicated. Includes the following analyses:
|Positive||Positive treatment indicated.
|Citing References with Analysis||Other cases cited the case and assigned some analysis that is not considered positive or negative. Includes the following analyses:
|Citation Information||References have not applied any analysis to the citation. For example the case was cited by case law or law reviews that do not warrant an analysis. Includes the analysis:
Click on the symbol to see the cases that have cited your case.
For more information about using Shepard's, go to http://wiki.lexisnexis.com/academic/index.php?title=Shepard%27s_Citations.