Also known as:joinder of claims · joinder of parties · joinder
Written by attorneys · grounded in primary & secondary sources — see below
A procedural mechanism that permits or requires multiple claims or parties to be litigated together in a single action. The mechanism promotes efficiency by consolidating related disputes while respecting limits on jurisdiction, venue, and fairness to participants.
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How it applies
Common Examples
6
Class Action Numerosity Challenge
Jasmine Jordan and 250 other investors filed a securities fraud suit against Jarvis Aviation alleging identical misrepresentations in the company's public filings. The plaintiffs moved for class certification. The court examined whether the sheer number of potential claimants made bringing every investor into the case as an individual party impractical.
Supplemental Jurisdiction Over Additional Claim
Julia Jensen sued Jackson Mutual in federal court under a federal statute for breach of an insurance policy. She later sought to add a state-law tort claim against the same insurer arising from the same denial of coverage. The court assessed whether the new claim formed part of the same constitutional case or controversy as the original federal claim.
Spousal Consent to Property Transfer
Jeffrey Jha transferred real estate to a trust without obtaining his wife's signature. After his death, the surviving spouse challenged the transfer's exclusion from the augmented estate. The probate court evaluated whether the absence of written joinder or consent rendered the transfer includible in the estate calculation.
Choice-of-Law on Joinder Issues
Jamal Jefferson, domiciled in State A, conveyed land located in State B to Jessica Jacobs. A dispute arose over the validity of the deed. The forum court applied its own procedural rules to questions of party joinder while looking to State B law for the substantive validity of the transfer.
Interpleader of Adverse Claimants
Jefferson Trust held insurance proceeds claimed by both Jada Jones and Jung BioTech after a disputed beneficiary designation. The trustee filed an interpleader action naming both claimants as defendants. The court considered whether the competing claims exposed the trustee to multiple liability sufficient to justify forcing the claimants to litigate their rights in one proceeding.
Venue for Nonresident Defendant
A foreign corporation with no U.S. residence was joined as a defendant in a contract action also naming a domestic corporation. The plaintiff filed in a district where venue was proper as to the domestic defendant. The court disregarded the foreign defendant's joinder when determining whether venue was proper for the entire action.
Common questions
Frequently Asked
5
When does joinder of an additional party destroy subject-matter jurisdiction?+
Joinder that would destroy diversity or federal-question jurisdiction may be denied under 28 U.S.C. § 1447(e) after removal or prevented at the outset under Rule 19. Courts weigh whether the party is required and whether equity favors proceeding without that party.
Supporting sources
How does Rule 22 interpleader differ from Rule 20 permissive joinder?+
Rule 22 allows a stakeholder facing multiple liability to force adverse claimants into one action even when their claims lack a common origin. Rule 20 requires a common question of law or fact and an arising-out-of-the-same-transaction test for permissive joinder of defendants.
What role does joinder play in partial-assignment enforcement under Restatement (Second) of Contracts § 326?+
An assignment of part of a right is operative, yet the obligor who has not agreed to separate performance may insist on joinder of all persons entitled to performance before any suit proceeds. Without joinder or a showing that it is infeasible and equity permits proceeding alone, the assignee cannot maintain an independent action.
Supporting sources
When may a court disregard the joinder of a nonresident defendant for venue purposes?+
Under 28 U.S.C. § 1391(c)(3), the presence of a defendant not resident in the United States is ignored when determining proper venue as to other defendants. The action may proceed in any district where venue is proper for the remaining parties.
Supporting sources
Does joinder of conspiracy defendants require that every participant be convicted together?+
No. Modern conspiracy rules permit joint prosecution when defendants are charged in a single count alleging one agreement or related aspects of one scheme. Each defendant's guilt remains an independent merits question.
Supporting sources
parties
, somehow alters our longstanding rule that jurisdiction is to be assessed under the facts existing when the complaint is filed. The redressability element of the…
ContractsThird-party rights · Assignment of rights and delegation of dutiesUBEFoundational