How a Utah Personal Injury Lawsuit Works: Service, Answer, Disclosures, and Discovery Tiers
General information, not legal advice. Read the full disclaimer.
Short answer: A Utah personal injury lawsuit follows the Utah Rules of Civil Procedure. After the complaint is filed, the summons and complaint must be served within 120 days (Rule 4(b)) by an adult who isn't a party or the party's attorney (Rule 4(d)(1)). The defendant then has 21 days to answer if served in Utah (30 days outside Utah) (Rule 12(a)). Parties exchange initial disclosures — the plaintiff within 14 days after the first answer and the defendant within 42 days — and discovery is limited by tier depending on the damages claimed: Tier 1 ($50,000 or less), Tier 2 (more than $50,000 and less than $300,000), or Tier 3 ($300,000 or more) (Rule 26).
Who this guide is for
People who've been told their injury case may need a lawsuit and want a step-by-step view of what's ahead — and the deadlines that matter.
Before the lawsuit
Most injury claims settle before suit. The statute of limitations (generally four years, with many exceptions) controls when a suit must be filed. See Utah Personal Injury Statute of Limitations and How Does a Personal Injury Claim Actually Work in Utah?. Claims against government entities and malpractice defendants have pre-suit requirements first.
Step 1: File the complaint
A lawsuit begins when the plaintiff files a complaint in the proper court. The amount of damages claimed determines the discovery tier described below. See Where to File a Personal Injury Lawsuit in Utah.
Step 2: Serve the defendant (within 120 days)
Under Rule 4(b), the summons and complaint must be served no later than 120 days after the complaint is filed, unless the court orders otherwise. Service can be made by any person 18 or older who isn't a party or a party's attorney. Missing the service deadline can lead to dismissal.
Step 3: The answer (21 days)
A defendant must file and serve an answer within 21 days after service of the summons and complaint within Utah, or 30 days if served outside Utah. Certain defenses can be raised by motion before the answer — lack of jurisdiction, improper venue, insufficient service, failure to state a claim, or failure to join a required party; other defenses are waived if not raised in the response. If the defendant doesn't respond, the plaintiff can seek a default judgment.
Step 4: Initial disclosures
Parties must serve initial disclosures without waiting for a discovery request. They cover witnesses, documents the party may use, a computation of damages, relevant insurance or indemnity agreements, and documents referred to in the pleadings. The deadlines:
- Plaintiff: within 14 days after the first answer is filed.
- Defendant: within 42 days after its first answer is filed.
A party can't seek discovery from any source until its initial disclosure obligations are met.
Step 5: Discovery, by tier
| Tier | Damages | Fact deposition hours | Interrogatories | Requests for production | Requests for admission | Days for standard fact discovery |
|---|---|---|---|---|---|---|
| 1 | $50,000 or less | 3 | 0 | 5 | 5 | 120 |
| 2 | More than $50,000 and less than $300,000 | 15 | 10 | 10 | 10 | 180 |
| 3 | $300,000 or more | 30 | 20 | 20 | 20 | 210 |
Limits apply per side. The fact-discovery period runs from the date the first defendant's first disclosure is due and excludes expert discovery. A party who needs more can seek extraordinary discovery by stipulation, motion, or an expanded schedule. A party that fails to timely disclose a witness or material can be barred from using it at trial unless the failure is harmless or there's good cause.
Step 6: Expert disclosures
Retained experts must disclose their qualifications, publications from the past 10 years, testimony from the past 4 years, a summary of opinions, the facts and data relied on, and compensation. The party with the burden of proof serves its expert disclosure within 14 days after fact discovery closes; the other side then has 14 days to elect a deposition (limited to 4 hours) or a written report. In injury cases, medical, vocational, and economic experts commonly matter.
Step 7: Alternative dispute resolution
Many injury cases go through mediation or another form of alternative dispute resolution before trial. Ask your lawyer or the court clerk about any ADR requirements that apply in your case.
Step 8: Motions, trial, and appeal
After discovery, parties may file summary judgment motions. If the case doesn't settle, it goes to trial before a judge or jury. Post-trial motions and appeals follow, subject to their own deadlines.
How the damages tier affects cost
Because Tier 1 discovery is limited (for example, no interrogatories and 3 hours of fact depositions), smaller cases can be resolved faster and cheaper, while Tier 3 cases allow more discovery but cost more. Your lawyer will consider the tier when deciding how to present the damages claim.
Frequently asked questions
How long do I have to serve a Utah lawsuit?
No later than 120 days after filing the complaint, unless the court orders otherwise.
How long does the defendant have to answer?
21 days after service in Utah, 30 days if served outside Utah.
What are the discovery tiers?
Tier 1: $50,000 or less; Tier 2: more than $50,000 and less than $300,000; Tier 3: $300,000 or more.
When are initial disclosures due?
Plaintiff: 14 days after the first answer. Defendant: 42 days after its first answer.
Does every case go to trial?
No. Most injury cases settle, often after discovery or mediation.