Legal glossary

Model Rules of Professional Conduct

Model Rules of Professional Conduct: The ABA's model ethics rules for lawyers, adopted on Aug. 2, 1983. They replaced the 1969 Model Code of Professional Responsibility, which in turn replaced the original Canons of Professional Ethics of Aug. 27, 1908. Each state's highest court adopts its own version, so the rules that bind a lawyer are the rules of the state where he or she is licensed.

Model Rules of Professional Conduct — a study group reading together

What model rules of professional conduct means

In short, model rules of professional conduct is a term you will meet in court papers, rules and legal research. The definition above gives its usual meaning in American civil practice. However, the exact meaning can depend on the rule, statute or court decision that uses it. So it helps to read the term in context.

Where model rules of professional conduct 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.

Read the source: Lawyer ethics canons guide.

How to research the term

To research model rules of professional conduct, begin with the rule, statute or contract where the word is used. Each one can give it a slightly different meaning. Then compare that text with how courts in your area have applied it. Also check the local rules of your court, since they can add requirements. If your case is in state court, the state rules control. So start with our state procedures guide to find them. In the end, always confirm that the source you rely on is current.

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

Related legal terms

  • Minor: a person under the age of majority, which is 18 in most states; a few states set it higher. Minors generally may disaffirm most contracts, and in federal court a minor sues or defends through a general guardian, a next friend or a guardian ad litem (Fed. R. Civ. P. 17(c)).
  • Misdemeanor: a crime less serious than a felony. Under federal law, it is an offense with a maximum prison term of one year or less, though more than five days (18 U.S.C. § 3559(a)(6) to (8)). Each state defines its own classes of misdemeanors.
  • Misnomer: a mistake in the name of a person or party in a legal document. A misnomer is usually corrected by amendment and does not by itself void a proceeding if the right person was actually served and was not misled.
  • Mistrial: a trial that ends before a verdict without a valid result, for example because of a serious error or a jury that cannot agree. A mistrial usually means the case may be tried again.

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.

Sources

Sources last reviewed: 2026-10-24

Lawtopolis provides legal information and education, not legal advice. Using this site does not create an attorney-client relationship. Laws and court rules vary by jurisdiction and change over time; verify every authority against the official source and consult a licensed attorney in your jurisdiction about your situation.