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N.D. Cal.Procedural orderFiled Dec. 31, 2025

Colbert v. Tesla

Judge
Jon Tigar
Docket
4:25-cv-09311
Court
U.S. District Court · Northern District of California
Pages
2
Civil ProcedureArbitration
In one sentence

In Eleanor Colbert v. Tesla, Judge Tigar remanded the case because the parties’ shared citizenship defeated diversity jurisdiction.

Who this affects

The case was returned to Alameda County Superior Court, and the federal court closed its file. Tesla’s removal was rejected; the opinion does not identify the individual defendants by name.

What happened

In Eleanor Colbert v. Tesla, Inc., Tesla removed the case to federal court, claiming diversity jurisdiction. Tesla argued that the citizenship of individual defendants should not count because they had not yet been served.

The court rejected that argument, explaining that the individual defendants were not fictitious defendants and that their citizenship had to be considered. Because their citizenship was the same as Eleanor Colbert’s, the court lacked diversity jurisdiction.

Judge Jon S. Tigar remanded the case to the Superior Court of California for Alameda County for lack of jurisdiction and directed the Clerk to close the federal case. The parties had also agreed to seek arbitration, but the court did not decide any arbitration issue.

The detailed version

For law students, journalists, and other readers who want the full reasoning

Case
Colbert v. Tesla · No. 4:25-cv-09311
Judge
Jon Tigar
Date
Dec. 31, 2025

Background

Tesla removed this case from state court to the U.S. District Court for the Northern District of California. Tesla asserted that the federal court had diversity jurisdiction under 28 U.S.C. § 1332. Tesla did not dispute that the individual defendants had the same citizenship as Plaintiff Eleanor Colbert, which would defeat diversity jurisdiction if their citizenship counted.

Tesla argued that the individual defendants’ citizenship should be disregarded because they had not been served when Tesla removed the case. After issuing an order explaining why the removal appeared improper, the court considered Tesla’s response. The parties later agreed to remand because they intended to agree to arbitrate the matter, but the court issued its own ruling to clarify that the present case lacked diversity jurisdiction.

Court’s reasoning

The court rejected Tesla’s argument. It explained that a rule potentially allowing removal by an unserved forum defendant does not mean that the defendant’s citizenship is ignored when determining whether diversity jurisdiction exists. The court also relied on the distinction between named defendants and defendants sued under fictitious names. The individual defendants in this case were not sued under fictitious names, so the rule disregarding fictitious defendants did not apply.

Because the individual defendants’ citizenship was the same as Colbert’s, the court concluded that diversity jurisdiction was absent. Tesla did not assert another basis for federal jurisdiction.

Disposition

The court remanded the case to the Superior Court of California for the County of Alameda for lack of jurisdiction. The Clerk was directed to close the federal file. The court did not decide the parties’ potential arbitration agreement or any underlying claims.

The authoritative version

Read the full 2-page opinion on CourtListener, the free public archive maintained by the Free Law Project.

Open opinion PDF →
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