To "shepardize" a case means to:

To "shepardize" a case refers specifically to the process of using a legal research tool, such as Shepard's Citations, to verify the current validity and treatment of a legal case. This involves checking to see whether the case is still considered good law, whether it has been affirmed, reversed, or overruled by subsequent decisions, and how it has been treated by other courts. This vetting of a case is crucial in legal research and practice as it ensures that the precedent being relied upon is still valid and applicable to the matter at hand.

The focus on the current validity and treatment of the case allows legal professionals to assess the reliability of the case in their legal arguments, thereby avoiding reliance on potentially outdated or unfavorable precedents.