In pari materia

What in pari materia means

In practice, you will see in pari materia in pleadings, motions, orders and court rules. The definition above explains the general meaning. Even so, the meaning can shift with context. Therefore, always read it alongside the rule or document where it appears.

Where in pari materia comes up

The term is used across many kinds of cases. For example, you may see it in pleadings, motions and court orders. To see it in context, browse the motions and procedures library or the Learn the Law topics.

How to research the term

Start with the primary source. For example, if in pari materia appears in a federal rule, read the rule itself and its official notes. After that, check your court’s local rules and any standing orders from the judge. In addition, search recent decisions from your own state or federal district. They show how courts read in pari materia in practice. Because state rules often differ, our state procedures guide links to each state’s official rules. Above all, make sure the version you read is still in force.

You can read the current federal court rules online for free.

Related legal terms

• Impeachment (of a witness): attacking a witness's credibility, for example by showing bias, a prior inconsistent statement or, in some cases, a criminal conviction. Federal Rules of Evidence 607 to 610 and 613 address impeachment.
• Impleader: bringing a third party into a lawsuit because that party may be liable for some or all of the claim. Also called a third-party complaint.
• In absentia: latin for "in absence." Describes a proceeding held while the person concerned is not present.
• In forma pauperis: proceeding without prepaying court fees because of inability to pay.

Why precise terms matter

Courts read legal terms closely. As a result, knowing the exact meaning of a word helps you follow orders, rules and filings. Each glossary entry on Lawtopolis is short on purpose and links to the pages where the term is used.