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California Service of Process Glossary: Legal Terms Explained

Plain-language meanings of the terms you meet when papers are served in California, from summons and substituted service to proof of service and court days.

Maintained by AffidUpdated

The papers.

The documents a server most often delivers, and what each one does.

Common court papers.
TermWhat it means
SummonsThe court paper that tells a defendant a case has been filed against them and how long they have to respond. It is served with the complaint.
ComplaintThe document that starts most civil cases, setting out what the plaintiff claims and asks for.
PetitionThe starting document in some cases, such as divorce or probate, filed by a petitioner instead of a plaintiff.
SubpoenaA court order requiring a person to appear, for example to testify, or to produce documents or records.
Foreign subpoenaA subpoena from a case in another state. For discovery in California, it is submitted to the superior court clerk, who issues a California subpoena (CCP § 2029.300).
Request for OrderA family court request, on form FL-300, asking the judge to make or change orders such as custody or support.
Three-day noticeA landlord’s written notice to a tenant, for example to pay rent or quit, that comes before an eviction case.
Unlawful detainerThe court case a landlord files to recover possession of a rental, commonly called an eviction case.

Ways papers are served.

California’s Code of Civil Procedure allows several methods. Not every method fits every case.

Methods of service.
TermWhat it means
Personal serviceHanding the papers directly to the person being served. Complete at the time of delivery (CCP § 415.10).
Substituted serviceLeaving the papers with a qualifying adult at a permitted location after diligent attempts, then mailing a copy. Complete on the 10th day after mailing (CCP § 415.20).
Notice and acknowledgmentMailing the papers with a form the recipient signs and returns. Complete when the recipient signs (CCP § 415.30).
Service by publicationPublishing the summons in a newspaper, only when a court orders it after other methods could not work (CCP § 415.50).
Agent for service of processThe person or company a business names to receive legal papers on its behalf, listed with the Secretary of State.
Service on a public entityDelivering the summons and complaint to the clerk, secretary, president, presiding officer or other head of the entity’s governing body (CCP § 416.50).

The records.

What you receive after service, and what the court sees.

Records of service.
TermWhat it means
Proof of serviceThe signed form stating how, when and where the papers were served and who received them. It is filed with the court.
Declaration of due diligenceA signed list of the earlier attempts to serve someone in person, often filed with substituted service.
AttemptOne visit to try to serve the papers. Affid includes up to four attempts per recipient and address and records each one.
Conformed copyA copy of a filed document stamped by the court clerk to show the filing, kept for your records.
Courtesy copyAn extra copy of a filed document delivered to the judge’s department when the court asks for one.
Official guidance for this sectionCalifornia Courts: Serving court papers

People, places and time.

Who is involved, and the terms courts use for time.

People, places and timing.
TermWhat it means
Registered process serverA person registered with a county clerk to serve papers for pay. Registration is required for more than 10 services a year (B&P Code § 22350).
Sheriff or marshalThe county office that can serve court papers for a set fee in most counties.
Litigation coordinatorThe staff member at each CDCR prison who handles legal matters, including how the facility receives papers.
Public entityA government body such as the state, a county, a city or a district. A claim usually has to be presented before suing one for money (Gov. Code § 945.4).
Court dayA day the court is open. Weekends and court holidays are not court days.
Reasonable diligenceA genuine, documented effort to serve someone in person before using another method.

Official sources.

Follow the instructions for your case and check the relevant court’s current requirements. These links provide the official information referenced in this guide; Affid is not affiliated with the courts.

These are short, plain-language explanations to help you follow the process. They are not legal definitions or legal advice; the cited statutes and your court’s instructions control.

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