Checking Citations in KeyCite
KeyCite, West’s powerful citation research service, helps you determine whether a case, statute, administrative decision, or regulation is good law. You can also use KeyCite to retrieve citing references to the document, including cases, administrative materials, secondary sources, and briefs and other court documents.
A red flag indicates
- in cases and administrative decisions, the case or administrative decision is no longer good law for at least one of the points of law it contains.
- in statutes and regulations, the statute or regulation has been amended by a recent session law or rule, repealed, superseded, or held unconstitutional or preempted in whole or in part.
- in patents, a court has held all or part of the patent invalid or invalid and not infringed; unenforceable due to the patentee's inequitable conduct; or has recognized the patent was held invalid or both invalid and not infringed in another case.
A yellow flag indicates that
- in cases and administrative decisions, the case or administrative decision has some negative history but has not been reversed or overruled.
- in statutes and regulations, the statute has been renumbered or transferred by a recent session law; that an uncodified session law or proposed legislation affecting the statute is available (statutes merely referenced, i.e., mentioned, are not marked with a yellow flag); that a notice or proposed rule affecting the regulation is available; that the statute or regulation was limited on constitutional or preemption grounds or its validity was otherwise called into doubt; or that a prior version of the statute or regulation received negative treatment from a court.
- in patents, a court has held the patent was not infringed but did not rule on its validity; held all or part of the patent valid and not infringed; or recognized the patent was held not infringed in another case.
A blue H indicates that
- in cases and administrative decisions, the case or administrative decision has some history.
- in patents, a court has construed the meaning of terms within the patent; held the patent was infringed; held all or part of the patent valid; or held all or part of the patent valid and infringed.
A green C indicates that
- in cases and administrative decisions, the case or administrative decision has citing references but no direct history or negative citing references.
- in statutes and regulations, the statute or regulation has citing references but no applicable history.
- in patents, the patent has citing references but no applicable history.
History of a Case:
KeyCite case history category |
Description |
Direct History |
traces your case through the appellate process and includes both prior and subsequent history |
Negative Citing References |
lists cases outside the direct appellate line that may have a negative impact on the precedential value of your case |
Related References |
lists cases that involve the same parties and facts as your case, whether or not the legal issues are the same |
Case history also includes links to related court documents, such as briefs, petitions, motions, and transcripts of oral arguments.