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Legal Research & Writing Guide

This guide provides resources related to legal research and writing.

Shepard's Citations

What is Shepard's Citation Service? Is it Available in Nexis Uni?

Shepard's Citation Service is available in Nexis Uni. The Shepard's Service provides users with a report to indicate whether the case, law, or source that you wish to cite is still valid and citable (good law) or if it has been negatively questioned or overturned (bad law)

How to Shepardize a case or document:
  1. Type shep followed by a colon (:) in the Search box, followed by the document citation.

For example:

  • shep: 800 F.2d 111 
  • shep: 410 us 73
  1. Click Search.

When viewing a document, you can also click on the Shepard's Signal (1st image) or the Shepardize This Document link within the document; likewise you can also turn on Show Signals in the Shepard's box (2nd image).

Image 1: Nexis Uni Shepard's Signal next to case name

Image 2: Nexis Uni Shepardize this document and Show Signals options.


Meanings of the Shepard's Signals: http://help.lexisnexis.com/Flare/nexisuni/US/en_US/Content/reference/shepardsignal_ref.htm
Warning: Negative treatment is indicated

The red Shepard's Signal indicator indicates that citing references in the Shepard's� Citations Service contain strong negative history or treatment of your case (for example, overruled by or reversed).

Warning: Negative treatment is indicated for statute

The red exclamation point Shepard's Signal indicator indicates that citing references in the Shepard's Citations Service contain strong negative treatment of the Shepardized™ section (for example, the section may have been found to be unconstitutional or void).

Questioned: Validity questioned by citing references

The orange Shepard's Signal indicator indicates that the citing references in the Shepard's Citations Service contain treatment that questions the continuing validity or precedential value of your case because of intervening circumstances, including judicial or legislative overruling.

Caution: Possible negative treatment indicated

The yellow Shepard's Signal indicator indicates that citing references in the Shepard's Citations Service contain history or treatment that may have a significant negative impact on your case (for example, limited or criticized by).

Positive treatment indicated

The green Shepard's Signal indicator indicates that citing references in the Shepard's Citations Service contain history or treatment that has a positive impact on your case (for example, affirmed or followed by).

Citing references with analysis available

The blue "A" Shepard's Signal indicator indicates that citing references in the Shepard's Citations Service contain treatment of your case that is neither positive nor negative (for example, explained).

Citation information available

The blue "I" Shepard's Signal indicator indicates that citing references are available in the Shepard's Citations Service for your case, but the references do not have history or treatment analysis (for example, the references are law review citations).

Legal Research Series: Shepard's Citations Workshop [03-25-2022]

LexisNexis Video: Using Shepard’s Case Analysis Tools