# Service of process — definition

> Service of process is the formal delivery of the summons and complaint that gives a court personal jurisdiction over the defendant and starts the defendant's response clock.

- Source: https://ottoforfirms.com/glossary/service-of-process/
- Publisher: Otto — https://ottoforfirms.com
- Updated: 2026-09-01

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**Service of process** — Service of process is the formal delivery of the summons and complaint that gives a court personal jurisdiction over the defendant and starts the defendant's response clock.

Under Federal Rule of Civil Procedure 4(c), any non-party at least 18 years old may serve; Rule 4(e) permits service either by following the law of the state where the district court sits or where service is made, or by personal delivery, leaving copies at the defendant's dwelling with a person of suitable age and discretion, or delivering to an authorized agent. Rule 4(m) requires dismissal if a defendant is not served within 90 days after the complaint is filed, absent good cause. In consumer collections the operative rules are almost always state, and defective or falsified service is the root cause of most vacated default judgments — which is why bank clients increasingly require affidavits of service, GPS-stamped attempts, and process-server vendor oversight to flow through the firm's own third-party program.

## Primary sources

1. [Fed. R. Civ. P. 4(c), (e), (m)](https://www.law.cornell.edu/rules/frcp/rule_4)

## See also

- [Default judgment](https://ottoforfirms.com/glossary/default-judgment/)
- [TPRM](https://ottoforfirms.com/glossary/tprm/)
- [Skip trace](https://ottoforfirms.com/glossary/skip-trace/)

## Where this appears

- [Florida statute of limitations on debt](https://ottoforfirms.com/statute-of-limitations/florida/)
- [Indiana statute of limitations on debt](https://ottoforfirms.com/statute-of-limitations/indiana/)
- [IOLTA trust accounting and three-way reconciliation](https://ottoforfirms.com/platform/trust-accounting/)

Last reviewed 2026-07-29

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This is an informational reference, not legal advice, and using it creates no attorney-client relationship. Limitations periods turn on facts this page cannot know — which state's law governs, the contract type, when the claim accrued, and whether anything tolled or revived it. Confirm against the primary source and your own counsel before acting.