Northern Mariana Islands (CNMI) — Court Rules & Rules of Practice Guide

1. Court System Overview

The CNMI’s local judiciary (the NMI Judiciary, nmijudiciary.gov — verified): the Superior Court of the CNMI (single trial court of general jurisdiction on Saipan, with sessions for Rota/Tinian — civil, criminal, family, probate, juvenile, traffic, drug court and mental-health court dockets, all verified) and the Supreme Court of the Commonwealth of the Northern Mariana Islands (court of last resort, established 1989 — verified: 1 CMC § 3101, enacted by PL 6-25, the Commonwealth Judicial Reorganization Act of 1989). Ninth Circuit review of NMI Supreme Court decisions sunset in 2004 — verified: 48 U.S.C. § 1824(a) (implementing Covenant § 403) gave the Ninth Circuit appellate jurisdiction only “for the first fifteen years following the establishment of an appellate court of the Northern Mariana Islands” (the NMI Supreme Court, est. 1989 → window closed 2004); thereafter § 1824 places relations between federal courts and NMI courts on the same footing as state courts, so review is only by certiorari to the U.S. Supreme Court (via 28 U.S.C. § 1257 state-court treatment). The District Court for the Northern Mariana Islands (federal, Article IV) is a separate federal forum. Court rules are promulgated by the NMI Supreme Court and published — unusually completely — by the Commonwealth Law Revision Commission (cnmilaw.gov) as a numbered R-series (verified full list).

2. The Ruleset Map

The CLRC publishes the CNMI’s rules as a numbered, standalone R-series (all names verified from cnmilaw.gov/court-rules — an exceptionally clean official inventory):

• No standalone small-claims ruleset appears in the R-series (re-verified against the CLRC index 2026-09-02) — small claims instead run under NMI R. Civ. P. 83 (Small Claims Procedure): the current R05 (eff. 2019-01-09) lists Rule 83 as “[Reserved]” but its note states that the former Rule 83 “remains in effect until superseded by the promulgation of the Small Claims Rules,” and Rule 84 makes court-adopted small-claims forms mandatory (verified from the R05 PDF). The operative former Rule 83 (adopted permanent by Administrative Order 2015-ADM-0003-RUL, effective December 22, 2014; text in the CLRC’s archived R05 PDF) covers claims of $5,000 or less, exclusive of interest, attorneys’ fees and costs; pleading is by a summons-and-complaint form entered on a docket card, service at least five business days before the hearing, informal trial not bound by the rules of procedure or evidence (except privilege and self-incrimination), and appeal to the Superior Court within 30 days with a $150 filing fee (verified). The mandatory forms were adopted by Administrative Order 2016-ADM-0025-RUL, “In re Small Claims Forms” (verified from the order PDF on cnmilaw.gov).
• No business court — verified as a negative: the CLRC’s full 38-ruleset R-series index contains no business-court or commercial-division ruleset, and nmijudiciary.gov lists only Drug Court, Mental Health Court, and Family Court as specialty divisions.
• Structure style: like Delaware/Alaska, the CNMI uses standalone per-subject rulesets rather than a Michigan-style unified compilation — but the CLRC’s numbered R-series functions as a de facto master index.

3. Civil Litigation Mechanics

• Commencement: complaint + summons under the NMI Rules of Civil Procedure (R05) — FRCP-patterned (answer 21 days — verified: NMI R. Civ. P. 12(a)(1)(A)(i), “within 21 days after being served with the summons and complaint”); the Rules of Practice (R11) supply the day-to-day motion/calendar mechanics — read both.
• Discovery: federal-pattern under R05 — verified: the R05 PDF carries the full FRCP 26–37 framework (Rule 26 disclosures/scope, depositions, interrogatories, Rule 34 production, Rule 36 admissions, Rule 37 sanctions).
• E-filing: the Electronic Filing and Service rules (R17) — verified: they govern e-filing/e-service “in all cases filed in all CNMI courts,” and registration/e-filing is mandatory for attorneys (including pro hac vice counsel) absent a good-cause exemption; the rules are platform-agnostic (“E-system” designated by the NMI Supreme Court), with the Judiciary’s eCourt Project as the current implementation.
• ADR: court-annexed ADR (R33) and certified-mediator rules (R21) exist as formal rulesets — mediation is institutionalized (verified sets).
• In forma pauperis has its own ruleset (R27); indigent civil litigants have a defined path.

4. Criminal Practice Mechanics

• Path: prosecutions by the CNMI Attorney General (Office of the Attorney General, Criminal Division); charging by information — verified: NMI R. Crim. P. 7, “All offenses except misdemeanors shall be prosecuted by information” (misdemeanors may proceed by complaint, Rule 3; no grand-jury charging appears in R06); arraignment and felony process in Superior Court under the Rules of Criminal Procedure (R06).
• Indigent defense: the CNMI Public Defender’s Office plus the Indigent Representation rules (R23) (verified set) for appointments.
• Speedy trial: rule/constitutional analysis under R06 — verified that R06 sets no fixed trial clock (Rule 48 is “Vacant” in the R06 table of contents); the only hard deadline found is Rule 5.1’s preliminary examination within 10 days of initial appearance.
• Specialty dockets: Drug Court (R46) and Mental Health Court (R35) run under their own verified policy rulesets.
• Post-conviction: habeas corpus under the Commonwealth Code, 6 CMC §§ 7101–7107 (Title 6, Division 7) — verified: writs “may be granted by the Commonwealth Superior Court or any of its judges” on application by “every person unlawfully imprisoned or restrained” or someone on that person’s behalf (§ 7101), by a written statement under oath (§ 7102); the judge determines the facts “without delay or formality” and may grant, deny, or grant on terms (§ 7105); the final order is appealable to the NMI Supreme Court within 30 days (§ 7107). No separate statutory post-conviction-motion chapter appears in Title 6, Division 6 (Criminal Procedure), whose chapter list runs from warrants/arrest through extradition (checked 2026-09-02).
• Criminal appeals to the NMI Supreme Court under the Supreme Court Rules (R01).

5. Evidence

• NMI Rules of Evidence (R08) (verified set) — FRE-modeled (verified: FRE article structure and numbering throughout); cited “NMI R. Evid. 403.”
• Experts: NMI R. Evid. 702 carries the federal (Daubert-line) reliability language — verified from the R08 PDF: testimony must be “based on sufficient facts or data,” “the product of reliable principles and methods,” reliably applied — i.e., the restyled federal Rule 702 text. NMI caselaw applies Daubert by name: in Commonwealth v. Lisua, 2024 MP 11 (NMI Sup. Ct. Dec. 31, 2024) the court restated that Commonwealth v. Crisostomo, 2018 MP 5 “applies the requirements of the ‘Daubert trilogy’ to the Commonwealth,” requiring the trial court to take evidence on relevance and reliability on the record, and treated an “incomplete Daubert ruling” as an abandonment of the gatekeeping duty (citing Commonwealth v. Taitano, 2018 MP 12); the opinion also notes that because the NMI Rules of Evidence are styled after the FRE, interpretations of identical federal rules are persuasive (verified from the e-filed slip opinion text).
• Customary-law overlay: Commonwealth courts apply Chamorro and Carolinian customary law in defined areas (notably family/land) — verified: 7 CMC § 3401 (“Applicability of Common Law,” cnmilaw.gov) sets the hierarchy written law → local customary law → common law (common law as expressed in the ALI Restatements applies only absent written or customary law to the contrary; neither common nor customary law can ground a criminal prosecution) — evidence of custom can itself be a litigated issue.

6. Appellate Mechanics

• One appellate court: the NMI Supreme Court (a chief justice and at least two associate justices per N.M.I. Const. art. IV § 3 — verified at nmijudiciary.gov, which also shows justices pro tempore sitting as needed) hears all Superior Court appeals under the Supreme Court Rules (R01) — FRAP-based briefing (verified); notice of appeal 30 days civil (verified: NMI Sup. Ct. R. 4(a)(1), filed with the Superior Court clerk within 30 days after entry of judgment) and 30 days for a defendant’s criminal appeal (verified: R. 4(b)(1)(A)); quarterly oral-argument sessions (verified).
• Administrative appeals run under their own ruleset (R22, verified).
• Beyond the CNMI: only U.S. Supreme Court certiorari since the 2004 sunset of Ninth Circuit review — verified: 48 U.S.C. § 1824 (Covenant § 403) limited Ninth Circuit jurisdiction to the first 15 years after the NMI appellate court’s 1989 establishment and otherwise treats NMI courts like state courts (cert route via 28 U.S.C. § 1257); the federal District Court for the NMI is a separate system appealed to the Ninth Circuit.
• Opinions published via cnmilaw.gov (N.M.I. reports; slip opinions at nmijudiciary.gov) with a court Style Manual (R26) governing citation format (verified set — a quirk worth knowing: the court tells you how to cite).

7. Rules of Professional Conduct

• The CNMI applies the ABA Model Rules of Professional Conduct through its disciplinary rules — verified from the R07 PDF: the R-series has no standalone “Rules of Professional Conduct”; instead R07 (Attorney Discipline & Procedure) Rule 3(1) makes any act or omission violating “the most recent version of the Model Rules of Professional Conduct of the American Bar Association” grounds for discipline — a rolling incorporation of the current ABA Model Rules.
• CLE is mandatory under its own ruleset (R15, verified).
• Admission (including the CNMI bar exam and PHV) runs under the Admission rules (R45) (verified from the R45 PDF): admission is administered by a Board of Bar Examiners chaired by the Chief Justice; pro hac vice requires good standing elsewhere, no Commonwealth office/residence, association with a local attorney in good standing, a $5,000 fee to the Commonwealth Treasury, and is limited to one new case per calendar year (12-month duration unless extended). A Legal Intern Program ruleset (R10) allows supervised student practice.

8. Attorney Discipline & Enforcement

• Rules of Attorney Discipline & Procedure (R07) — mechanics verified from the R07 PDF: complaint → a five-member disciplinary committee of Bar members votes to open an investigation and appoints an investigator (the Chief Justice may appoint one if the committee lacks quorum) → disciplinary hearing in the Superior Court, which enters the initial discipline order → appeal to, and the effectuating/implementing order from, the NMI Supreme Court.
• Sanctions: verified from R07 Rule 4 — disbarment, suspension, public censure, private reprimand, monetary sanctions/restitution, probation with practice audits, mandated ethics education, substance-abuse treatment, pro bono service (plus costs of investigation/prosecution). Reciprocal discipline is express (R07 Rule 16, verified): attorneys must self-report discipline elsewhere within 15 days; the Supreme Court issues a show-cause order and the attorney bears a clear-and-convincing burden to avoid reciprocal discipline — a live issue for the multi-bar practitioners common in the Pacific territories.
• Judicial discipline is separate (R44, Judicial Disciplinary Procedure — verified).

9. Newcomer Orientation Notes

• cnmilaw.gov is the master key: the Law Revision Commission publishes every ruleset, the Commonwealth Code, session laws, the Administrative Code, and court decisions free — among the best-organized official legal portals of any U.S. jurisdiction. Start there.
• Land alienation is constitutional law: NMI Const. art. XII restricts acquisition of permanent and long-term interests in real property to persons of Northern Marianas descent — substance verified: Covenant § 805 (48 U.S.C. § 1801 note, fetched at uscode.house.gov) mandates restricting “the acquisition of such interests to persons of Northern Mariana Islands descent,” and cnmilaw.gov’s own constitution page describes art. XII in those terms; implementing statutes (e.g., 2 CMC §§ 6602, 6704 on “Article XII condominiums”) confirm the regime. A unique substantive overlay on real-estate, probate, and family litigation. Full art. XII text verified 2026-09-02 from the CLRC constitution page: § 3 defines the restricted interests as freehold interests and leaseholds of more than 55 years including renewal rights (condominium interests above the first floor excepted); § 4 (as amended by House Legislative Initiative 18-1 (2014), which replaced the former one-quarter blood-quantum test) defines a person of Northern Marianas descent as a U.S. citizen or national with “at least some degree of Northern Marianas Chamorro or Northern Marianas Carolinian blood or a combination thereof” — a person claiming less than one-quarter must prove descent to the Superior Court by a preponderance of the evidence and obtain certification (subject to de novo review); adoption confers no descent; and anyone born or domiciled in the islands by 1950 who was a Trust Territory citizen is deemed full-blooded; § 5 sets 100%-descent director/shareholder tests for corporations; § 6 makes violating transactions void ab initio.
• Customary law is live law (Chamorro/Carolinian custom in family and land matters) — the written-law → customary-law → common-law hierarchy is verified at 7 CMC § 3401 (cnmilaw.gov) and has no stateside analogue.
• Trust Territory residue: pre-Commonwealth Trust Territory law and cases still matter for older land titles; the CLRC archives Trust Territory reports (verified archive exists).
• Geography: courthouses on Saipan (main), with Rota and Tinian sessions; the time zone (ChST, UTC+10) puts practice a day ahead of the mainland.
• Two systems on the islands: NMI Judiciary (local) vs. the U.S. District Court for the NMI (federal, Ninth Circuit) — separate bars, rules, and appellate paths.
• Self-help: nmijudiciary.gov forms and the clerk’s offices (forms page verified — no dedicated self-help center found); Micronesian Legal Services Corporation described itself as having “offices throughout Micronesia” when mlscnet.org was fetched on 2026-08-28, but the site listed no CNMI office/intake specifics then and did not respond to a re-check on September 2, 2026 (connection refused/timeout, including through the headless fetcher); LSC’s grantee locator requires an interactive address search. Confirm current CNMI intake directly before referring a client.

10. Sources & Verification

Sources fetched 2026-08-28 (full verification pass 2 — all official unless labeled):

• CLRC Court Rules index (38 current rulesets + 5 archived; names re-verified): https://cnmilaw.gov/court-rules
• Ruleset PDFs (official, fetched and read): R05 Civil Procedure: https://cnmilaw.gov/docs/courtrules/R05.pdf ; R01 Supreme Court Rules: https://cnmilaw.gov/docs/courtrules/R01.pdf ; R06 Criminal Procedure: https://cnmilaw.gov/docs/courtrules/R06.pdf ; R07 Attorney Discipline & Procedure: https://cnmilaw.gov/docs/courtrules/R07.pdf ; R08 Evidence: https://cnmilaw.gov/docs/courtrules/R08.pdf ; R17 Electronic Filing and Service: https://cnmilaw.gov/docs/courtrules/R17.pdf ; R45 Admission: https://cnmilaw.gov/docs/courtrules/R45.pdf
• 48 U.S.C. § 1824 (Covenant § 403; 15-year Ninth Circuit window, state-court treatment thereafter) and Covenant § 805 (land-alienation mandate, 48 U.S.C. § 1801 note): https://uscode.house.gov/view.xhtml?req=granuleid:USC-prelim-title48-section1824&num=0&edition=prelim and https://uscode.house.gov/view.xhtml?req=granuleid:USC-prelim-title48-section1801&num=0&edition=prelim
• 7 CMC § 3401 (Applicability of Common Law — hierarchy): https://cnmilaw.gov/commonwealth-code/6821 (PDF: https://cnmilaw.gov/pdf/cmc_section/T7/3401.pdf)
• 1 CMC § 3101 (Establishment of Supreme Court, PL 6-25 (1989)): https://cnmilaw.gov/docs/cmc_section/T1/3101.pdf
• CLRC main portal and Commonwealth Code browser (constitution page, code titles, Trust Territory archive, admin orders): https://cnmilaw.gov/ ; https://cnmilaw.gov/commonwealth-code ; NMI Constitution page (art. IV, art. XII references; full art. XII text truncated in fetch): https://cnmilaw.gov/constitution
• NMI Judiciary (Supreme Court composition per art. IV § 3, justices incl. pro tems, Superior Court, Drug/Mental Health/Family Court divisions, eCourt, forms, opinions “1989–2025”): https://www.nmijudiciary.gov/ ; https://www.nmijudiciary.gov/supremecourt ; https://www.nmijudiciary.gov/court-forms
• Small-claims forms admin order: 2016-ADM-0025-RUL, https://cnmilaw.gov/document/9134 (PDF fetched 2026-09-02, see below)
• Micronesian Legal Services Corporation (non-official; existence/offices): https://www.mlscnet.org/

Sources fetched 2026-09-02 (flag-resolution pass 3):

• Official — 2016-ADM-0025-RUL, “In re Small Claims Forms” (NMI Sup. Ct. Dec. 23, 2016): https://cnmilaw.gov/docs/orders/adm/2016-ADM-0025.pdf — confirmed the order adopts mandatory small-claims forms under NMI R. Civ. P. 84 and recites that revised Rule 83 took effect December 22, 2014 and was made permanent March 3, 2015.
• Official — NMI Rules of Civil Procedure (R05, eff. 2019-01-09), Rules 83–84: https://cnmilaw.gov/docs/courtrules/R05.pdf — confirmed Rule 83 “[Reserved]” with note that former Rule 83 remains in effect until Small Claims Rules are promulgated, and Rule 84’s mandatory small-claims forms.
• Official — Archived R05 (former Rule 83, Small Claims Procedure, with Administrative Order 2015-ADM-0003-RUL): https://cnmilaw.gov/docs/courtrules/R05(old).pdf — confirmed the $5,000 cap (exclusive of interest, fees, costs), five-business-day service, informal trial, 30-day appeal to the Superior Court with $150 fee.
• Official — CLRC Court Rules index (38 current, 5 archived; no small-claims ruleset): https://cnmilaw.gov/court-rules
• Official — NMI Constitution art. XII §§ 1–6 (full text, incl. § 4 as amended by H.L.I. 18-1 (2014)): https://cnmilaw.gov/constitution
• Official — 6 CMC §§ 7101, 7102, 7105, 7107 (Title 6, Division 7, Habeas Corpus) and the Title 6 division/chapter index: https://cnmilaw.gov/commonwealth-code/6505 (section PDFs at https://cnmilaw.gov/pdf/cmc_section/T6/7101.pdf etc.); Division 6 chapter list: https://cnmilaw.gov/commonwealth-code/6422
• Labeled fallback (secondary) — Commonwealth v. Lisua, 2024 MP 11 (NMI Sup. Ct. Dec. 31, 2024; e-filed slip opinion text mirrored on CourtListener): https://www.courtlistener.com/opinion/10305712/commonwealth-v-lisua/ — confirmed Daubert applied by name via Commonwealth v. Crisostomo, 2018 MP 5, and Commonwealth v. Taitano, 2018 MP 12. (cnmilaw.gov’s case-document search did not return the opinion on 2026-09-02.)
• Unreachable 2026-09-02 — https://www.mlscnet.org/ (connection refused via WebFetch/curl; timeout via headless fetcher); https://www.lsc.gov/about-lsc/what-legal-aid/get-legal-help lists providers only through an interactive search.

Not verified (flagged): none — all previously flagged items resolved 2026-09-02 (pass 3).