Kathryn Kimball Mizelle

How Judge Mizelle rules, drawn from 20 signed orders. Every observation links to the order it came from.

Court
U.S. District Court for the Middle District of Florida
Position
District judge
Appointed by
Donald J. Trump (Republican)
Commissioned
November 20, 2020
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
20

About Judge Mizelle

Kathryn Kimball Mizelle is a judge of the United States District Court for the Middle District of Florida. Appointed by President Donald J. Trump, Judge Mizelle received a commission on November 20, 2020.

Judge Mizelle's practices and standing orders

Rules for cases before Judge Mizelle, as published on the court's website (checked October 8, 2026). Judges revise these often, so confirm the current version on the court's site before you file.

Key rules

Filing

Disclose every entity that may have an interest in the case, including ownership however small of a party’s shares.

“the name of each person, attorney, association of persons, firm, law firm, partnership, corporation, limited liability company, subsidiary, conglomerate, affiliate, member, and any other identifiable legal entity that has, or might have, an interest in the outcome of this action, including through any ownership however small of a party’s shares or stock”

Standing orders for every case in this court

Orders the court applies to all of its cases, whichever judge has them, as published on the court's website (checked October 10, 2026).

Key rules from these orders · The court's local rules ↗

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)”

In Lifelink, she reached the merits of an organ procurement rule challenge for plaintiffs who lacked another review path, then granted summary judgment to the agency after finding the rule lawful and adequately explained.

“Because the Illinois Council exception applies, I have jurisdiction over this action. But because the Final Rule does not violate Section 273 and is not arbitrary and capricious or otherwise unlawful, I grant summary judgment to the Secretary.”

Procedural preferences

In Lasky, she remanded a removed case when a defendant raised the missing codefendant consent within the statutory period, without deciding the separate diversity objection.

“Remand is proper because Hartford’s removal is procedurally defective.”

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) Moot / procedural

“Because Stabile is no longer ‘in custody’ regarding the conviction that he contests in this petition, I do not have jurisdiction to grant him habeas relief. ... Accordingly, 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.”

Smith v. Perrault
8:25-cv-00804-KKM-AEP · 2026-10-01
Motions to dismiss (defendant) Granted

“The Florida Department of Financial Services’ Motion to Dismiss (Doc. 59) is GRANTED.”

Tess v. Springfield Inc.
8:25-cv-03392-KKM-LSG · 2026-09-30
Motions to dismiss (defendant Springfield Guns) Granted

“Springfield Guns’ and Springfield Holdings’ Motions to Dismiss (Docs. 12, 13) are GRANTED.”

Motions to dismiss (defendant Springfield Holdings) Granted
Lifelink Foundation Inc. v. Kennedy
8:25-cv-02042-KKM-SPF · 2026-09-29
Summary judgment (defendant) Granted in part

“The Secretary’s motion for summary judgment (Doc. 43) is GRANTED in part.”

Summary judgment (plaintiffs) Denied

“The organizations’ motion for summary judgment (Doc. 39) is DENIED.”

Lasky v. Hartford Underwriters Insurance Company
8:26-cv-01590-KKM-AEP · 2026-09-23
Motions to remand (plaintiffs) Granted

“The Laskys’ Construed Motion to Remand, (Doc. 16), is GRANTED.”

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.

Pending matters in the official report

Reported by the Administrative Office of the U.S. Courts under the Civil Justice Reform Act, as of March 31, 2026.

Motions pending more than six months0
Bench trials submitted more than six months0
Bankruptcy appeals pending more than six months0
Social Security appeals pending more than six months0
Civil cases pending more than three years0
ReportMotions over six monthsCases over three years
Mar 202600
Sep 202500
Mar 202500
Sep 202400
Mar 202401
Sep 202301
Mar 202300
Sep 202200
Mar 202200
Sep 202100
Mar 202102

A snapshot on that date: matters listed may since have been decided or reassigned. A motion referred to a magistrate judge is counted for both judges. Motions in multidistrict litigation, section 2255 cases and Social Security appeals are not counted, and a very large three-year count is generally a multidistrict docket. Source: Appendix A of the report (PDF); about the report.

How long civil cases take in this court

For the whole of U.S. District Court for the Middle District of Florida, not for Judge Mizelle: median time from filing to disposition of the civil cases the court closed in the 12 months ending September 30, 2025, as reported by the Administrative Office of the U.S. Courts.

CasesMedian time
All civil cases closed6,8965.5 months
Closed with no court action493.5 months
Closed before pretrial6,4925.2 months
Closed during or after pretrial31914.7 months
Closed during trial3624.2 months
12 months endingCases closedMedian time
Sep 20256,8965.5 months
Sep 20247,1155.6 months
Sep 20236,7775.5 months
Sep 20226,7816.7 months
Sep 20216,7496.2 months
Sep 20206,3926.2 months
Sep 20196,8305.7 months

The table leaves out prisoner petitions, land condemnations, deportation reviews, recovery of overpayments and enforcement of judgments, and reports no median for fewer than 10 cases. A district that closed a large multidistrict litigation in the period shows very large counts and long medians for that year. Source: Table C-5, U.S. District Courts (spreadsheet).

Draft for Judge Mizelle with the record in hand

Ezel grounds your drafting and research in this profile: what has persuaded Judge Mizelle, and what has not, cited to the signed orders.

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