Pro Se 11

Third Party Complaint

Agency
U.S. Courts
Revision
Rev. 12/16
Fillable fields
67
Pages
5
Official source
U.S. Courts form page
Checked
October 20, 2026
Fill Pro Se 11 online
Page 1 of form Pro Se 11

Pro Se 11: Third Party Complaint

Pro Se 11, Third Party Complaint, is a pleading form from the U.S. Courts for a case in a United States district court. The PDF titles it Third-Party Complaint. It is one of the Civil Pro Se Forms, which the U.S. Courts page says are limited to types of cases often filed in federal courts by people who represent themselves or who may not have much experience in federal courts.

The form is signed by a defendant who is also a third-party plaintiff, or by an attorney. It asks for the parties, including up to four third-party defendants, the initial complaint filed against the defendant and any answer, the relationship with each third-party defendant, why a judgment for the plaintiff would entitle the defendant to contribution or indemnification from the third-party defendant, and a signed certification under Federal Rule of Civil Procedure 11.

The U.S. Courts offers it as a PDF and a Word file, effective on December 1, 2016. This page explains the form in plain words and is not legal advice. You can fill it out free in your browser on this page and download the result without an account.

Top of page 1 of Pro Se 11: Third Party Complaint, as printed by COURTS

What's on Pro Se 11

Caption

The district and division, the full names of the plaintiffs, the defendants/third-party plaintiffs and the third-party defendants, a yes or no choice for a jury trial, and a case number left for the Clerk's Office. Names that do not fit go on an attached page, with "see attached" written in the space.

I. The Parties to This Complaint

Name, address, phone and email for each plaintiff and each defendant/third-party plaintiff, and for up to four third-party defendants, with an individual's job or title if known.

II. Initial Complaint

The complaint filed against you and its date, the events behind it, the claims and the relief sought, with the complaint attached as an exhibit. It also asks whether an answer was filed, its admissions or denials, and the answer as an exhibit.

III. Third-Party Complaint

The relationship with the third-party defendant, with any contracts or documents attached, and why a judgment for the plaintiff would entitle you to contribution or indemnification, including the percentage and the facts or state law relied on.

IV. Certification and Closing

A certification under Federal Rule of Civil Procedure 11, then the date, signature and printed name of the defendant/third-party plaintiff, or the attorney's details.

How to fill out Pro Se 11

  1. 1

    Read the notes on the form page

    The U.S. Courts page says no form provides legal advice, a court may require more or less than a form asks, and to consult the rules and caselaw that govern in the court where you file.

  2. 2

    Fill in the caption and parties

    Enter the district, division and the full names of all three groups of parties, choose yes or no for a jury trial, and leave the case number for the Clerk's Office.

  3. 3

    Describe the initial complaint

    Section II asks you to identify the complaint filed against you and the date it was filed, and to attach it as an exhibit. If an answer was filed, the form asks for a short summary and the answer as an exhibit.

  4. 4

    Explain the third-party claim

    Section III asks for the relationship with the third-party defendant, with supporting contracts or documents attached, and for the facts or relevant provisions of state law behind the claim for contribution or indemnification.

  5. 5

    Leave out private details

    The page cites Federal Rule of Civil Procedure 5.2: a filing may show only the last four digits of a Social Security, taxpayer or financial account number, the year of birth, and a minor's initials.

  6. 6

    Sign and date

    Sign under the Rule 11 certification and print your name. Parties without an attorney also agree to keep their address current with the Clerk's Office.

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Court, timing and help

Court

The form is captioned for a United States District Court, district and division. The page says to consult the rules and caselaw that govern in the court where the pleading is filed.

Fees

The form and its U.S. Courts page do not print a filing fee.

Exhibits

The form asks for the initial complaint and any answer to be attached as exhibits, along with any contracts or documents showing the relationship with the third-party defendant.

Timing and parties

The page says the forms give no guidance on when pleadings, claims or defenses have to be raised or who has to be sued, and that there are limits on who can be named as a party and when they have to be added.

A lawyer

The page says that if you are not a lawyer and are suing or have been sued, it is best to have or consult a lawyer if possible.

Formats

The U.S. Courts page offers Pro Se 11 as a PDF and as a Word document.

Who uses Pro Se 11?

  • Defendants who are third-party plaintiffs

    The caption and Section I.B name each defendant/third-party plaintiff, and Section IV.A is signed by the defendant/third-party plaintiff.

  • Third-party defendants

    Section I.C lists each third-party defendant, whether an individual, a government agency, an organization or a corporation, with an individual's job or title if known. There is room for four.

  • The original plaintiffs

    Section I.A asks for the name, address, phone and email (if known) of each plaintiff named in the complaint.

  • People representing themselves

    Section IV.A is for parties without an attorney. They agree to tell the Clerk's Office about any address change, and the form says a missing current address may result in dismissal of the case.

  • Attorneys

    Section IV.B has a signature block for an attorney, with bar number, law firm, address, phone and email.

The page describes the Civil Pro Se Forms as examples for people who represent themselves or have little experience in federal courts, and says to use the form that fits your case. The form names these parties.

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Questions about Form Pro Se 11

Is Pro Se 11 legal advice?

No. The U.S. Courts page says no form provides legal advice or substitutes for having or consulting a lawyer, and that following a form does not guarantee a pleading is legally or factually correct or sufficient.

Who signs Pro Se 11?

Section IV.A has lines for the signature and printed name of the defendant/third-party plaintiff. Section IV.B is for an attorney, with bar number and law firm details.

What does Pro Se 11 ask to attach?

The initial complaint filed against you, any answer you filed, and any contracts or documents showing the relationship with the third-party defendant. Extra pages for parties that do not fit can be attached too.

How many third-party defendants fit on the form?

Section I.C has room for four. The form says to attach additional pages if needed and to write "see attached" in the caption when names do not fit.

Who fills in the case number?

The form says the case number is filled in by the Clerk's Office.

Does Pro Se 11 say when to file a third-party complaint?

No. The page says the forms give no guidance on timing or on who has to be sued, that there are limits on who can be named as a party and when they have to be added, and that the Federal Rules of Civil Procedure are available free at www.uscourts.gov.

What personal details does a complaint leave out?

The page cites Federal Rule of Civil Procedure 5.2: filings should not contain anyone's full Social Security number or full birth date, the name of a person known to be a minor, or a complete financial account number.