Kathryn Kimball Mizelle

How Judge Mizelle rules, drawn from 8 signed orders. Every observation links to the order it came from.

Court
U.S. District Court for the Middle District of Florida
Appointed by
Donald J. Trump (Republican)
Commissioned
2020-11-20
ABA rating
Not Qualified
Education
Covenant College (B.A., economics, summa cum laude, 2009); University of Florida, Fredric G. Levin College of Law (J.D., with highest honors, 2012)
Signed orders read
8

How Judge Mizelle decides

Patterns drawn from this judge's own signed orders. Every observation links to the order it came from.

What persuades

Grants summary judgment to the plaintiffs on an Administrative Procedure Act challenge, declaring the challenged federal rule unlawful, vacating it, and remanding to the agency.

“ORDER granting summary judgment to Plaintiffs and against Defendants on Counts I, II, and III. The Mask Mandate is declared unlawful, vacated, and remanded to the CDC. The Court directs the Clerk to terminate President Biden as a defendant, enter judgment in favor of Plaintiffs, and close this case. Signed by Judge Kathryn Kimball Mizelle on 4/18/2022.”

Contractual incorporation of American Arbitration Association rules can delegate gateway arbitrability questions to the arbitrator. In Cartesian Products, that delegation supported compelling arbitration and staying the copyright and trade-secret action.

“The arbitration clauses’ incorporation of the AAA’s rules is clear and unmistakable evidence that Cartesian and Construct Software Technologies agreed to arbitrate the question of whether Cartesian’s claims are arbitrable.”

For Section 2254 jurisdiction, collateral consequences from an expired conviction are not enough. In Stabile, sex-offender registration did not place the petitioner in custody under the completed sentence, and the petition was also untimely.

“once the sentence imposed for a conviction has completely expired, the collateral consequences of that conviction are not themselves sufficient to render an individual ‘in custody’”

In an as-applied Second Amendment challenge, she required the government to identify a historical tradition supporting the restriction. She dismissed the federal-facility charge after the government conceded that it had no evidence of founding-era firearm prohibitions at post offices or for postal workers.

“The United States concedes that '[t]here is no evidence of firearms being prohibited at post offices, specifically, or of postal workers being prohibited from carrying them, at the time of the founding.'”

An unexplained delay in seeking preliminary relief can defeat a claim of imminent, irreparable harm. In Miller, the employer waited five months and relied on conclusory assertions rather than evidence of lost customers or misuse of trade secrets.

“GETS’s unexplained delay alone is sufficient to find that it does not face irreparable harm.”

At summary judgment, specific video and witness evidence can create a jury question even without direct proof of notice. In Eddings, the record permitted competing inferences about whether store employees created or should have discovered the slipping hazard.

“In sum, there is no smoking gun on actual notice. But there is also far more than ‘only a guess or a possibility.’”

A limitations defense at the pleading stage must be established by the complaint itself. In Toston, local claims were dismissed as untimely, but federal claims survived because the complaint did not show that administrative tolling had ended.

“it must be ‘apparent from the face of the complaint that the claim is time-barred.’”

In Brannon, she denied an initial stay request without prejudice when it omitted the required good-faith conferral certification, then granted a compliant renewed request only in part.

“the Court denies Defendant's 28 Motion to Stay and Set Status Conference without prejudice because it fails to comply with Local Rule 3.01(g)”

Signed rulings

A grounded sample of orders signed by this judge, with the verbatim dispositive language.

Health Freedom Defense Fund, Inc. v. Biden
8:21-cv-01693 · 2022-04-18
Summary judgment (plaintiff) Granted

“ORDER granting summary judgment to Plaintiffs and against Defendants on Counts I, II, and III. The Mask Mandate is declared unlawful, vacated, and remanded to the CDC. The Court directs the Clerk to terminate President Biden as a defendant, enter judgment in favor of Plaintiffs, and close this case. Signed by Judge Kathryn Kimball Mizelle on 4/18/2022.”

Summary judgment (defendant) Denied

“ORDER granting summary judgment to Plaintiffs and against Defendants on Counts I, II, and III. [The same order denies Defendants' Motion for Summary Judgment, Doc 45, by granting Plaintiffs' cross-motion and vacating the challenged rule.]”

Stabile v. Florida
5:23-cv-00004 · 2025-08-05
Habeas petition 2254 (petitioner) Denied

“Stabile’s petition for writ of habeas corpus, (Doc. 1), is DISMISSED without prejudice.”

Cartesian Products, Inc. v. Roper Technologies, Inc.
8:23-cv-00061 · 2023-05-04
Motion to compel arbitration (defendant) Granted

“Defendants’ Motions to Compel Arbitration (Doc. 18) is GRANTED.”

Motions to stay (defendant) Granted

“This case is STAYED.”

United States v. Ayala
8:22-cr-00369-KKM-AAS · 2024-01-12
Motions to dismiss (defendant) Granted in part

“Defendant's 23 Motion to Dismiss is GRANTED IN PART. Count I of the 1 Indictment is DISMISSED WITH PREJUDICE. Defendant's 40 Motion for Evidentiary Hearing is DENIED. Signed by Judge Kathryn Kimball Mizelle on 1/12/2024.”

Motion for evidentiary hearing (defendant) Denied

“Defendant's 40 Motion for Evidentiary Hearing is DENIED.”

Miller v. Global Electronic Testing Services
8:25-cv-01640 · 2026-01-06
Preliminary injunction (defendant) Denied

“Because GETS has not carried its burden of persuasion to show an irreparable injury, I DENY its Motion for Preliminary Injunction (Doc. 23).”

Interactive Content Engines, LLC v. Rumble USA, Inc.
8:22-cv-01949 · 2023-05-08
Motions to dismiss (plaintiff) Denied

“ORDER denying 42 Motion to Dismiss and Strike. Signed by Judge Kathryn Kimball Mizelle on 5/8/2023. (RLD)”

Motions to strike (plaintiff) Denied
Eddings v. Target Corporation
8:22-cv-02060 · 2024-02-05
Summary judgment (defendant) Denied

“Target’s motion for summary judgment (Doc. 29) is DENIED.”

City of Tampa ex rel. Toston v. D&M Assets 1, LLC
8:22-cv-01926 · 2023-07-17
Motions to dismiss (defendant) Granted in part

“Defendants’ Motion to Dismiss is GRANTED in part and DENIED in part.”

Caseload & timing

From public federal docket records for this judge.

Median case duration in the sampled dockets: 280 days (N = 1).

Median motion-to-ruling time: 75 days (N = 2).

  • The oldest reviewed cases were filed from 1994 through 2018 and reassigned to Judge Mizelle after her November 2020 commission.
  • Nearly all terminated in 2021 as she cleared an inherited group of habeas and prisoner matters.
  • Because those cases largely reflect her predecessors' management, their full durations are not attributed to her.
  • The description is therefore limited and should not be read as a caseload-wide rate.

Draft for Judge Mizelle with the record in hand

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