Kiyo A. Matsumoto
Appointed by President George W. Bush in 2008 and confirmed by voice vote, Kiyo A. Matsumoto is a Judge on the U.S. District Court for the Eastern District of New York. She earned a law degree from Georgetown University Law Center in 1981. Rulings & record ↓ Sources ↓
- Born
- 1955 · age 71
- Appointed by
- George W. Bush, 2008
- Confirmed
- by voice vote
- Education
- University of California, Berkeley 1976 · Georgetown Law Center 1981
- Succeeded
- Edward Robert Korman
- Succeeded by
- Ramon Ernesto Reyes Jr.
Federal judicial service
| Year | Court | Appointed by | Vote |
|---|---|---|---|
| 2008 | Eastern District of New York succeeded Edward Robert Korman | G.W. Bush (R) | Voice vote |
Party letters show the appointing president’s party, not the judge’s own. A voice vote means the chamber approved aloud. No senator-by-senator tally is recorded.
Confirmation vote
Voice vote
The Senate approved this confirmation aloud, with no senator-by-senator tally recorded. Recorded roll-call votes begin in 1989.
Education
Judicial Record
Caseload & case types
In our data, Matsumoto was assigned 4,485 district-court cases (1999–2026). Median time from filing to termination: 218 days across 4,230 closed cases.
Case assignment is from CourtListener’s PACER-derived docket records: a partial sample, not a complete caseload, reflecting the judge last assigned each case. How we count.
On appeal
Of 169 of Matsumoto’s decisions reviewed on the merits by the U.S. courts of appeals in our data, 133 were affirmed, 25 reversed or vacated, and 11 affirmed in part and reversed in part. This is a historical count of appellate outcomes for cases we could match, not a judgment of the judge, and not a complete record. How we count.
In our data, Matsumoto authored 32 published opinions for the court (2006–2011). Most cited: Estate of Ellington Ex Rel. Ellington v. Harbrew Imports Ltd. (201 citations).
A selective record from published opinions in the CourtListener corpus, not every ruling; most unpublished district orders are not included. Counts and rankings are objective and recomputable: how we count. We describe the record, not the judge.
Recent & notable rulings
| Year | Case | Citation | Cited |
|---|---|---|---|
| 2011 | Estate of Ellington Ex Rel. Ellington v. Harbrew Imports Ltd. | 812 F. Supp. 2d 186 | 201 |
| 2009 | United States v. Brown | 606 F. Supp. 2d 306 | 54 |
| 2010 | Curtis & Associates, P.C. v. Law Offices of Bushman | 758 F. Supp. 2d 153 | 31 |
| 2011 | Anderson v. City of New York | 817 F. Supp. 2d 77 | 28 |
| 2010 | Hall v. New York City Department of Transportation | 701 F. Supp. 2d 318 | 23 |
| 2009 | Mathis v. United Homes, LLC | 607 F. Supp. 2d 411 | 23 |
| 2009 | Nero v. Law Office of Sam Streeter, P.L.L.C. | 655 F. Supp. 2d 200 | 22 |
| 2009 | Gristede's Foods, Inc. v. Unkechuage Nation | 660 F. Supp. 2d 442 | 21 |
| 2010 | LaFlamme v. Societe Air France | 702 F. Supp. 2d 136 | 19 |
| 2011 | McDonald v. City of New York | 786 F. Supp. 2d 588 | 18 |
| 2010 | Holmes v. Air Line Pilots Ass'n, International | 745 F. Supp. 2d 176 | 18 |
| 2011 | United States v. Dupree | 781 F. Supp. 2d 115 | 16 |
| 2009 | Del Turco v. Speedwell Design | 623 F. Supp. 2d 319 | 16 |
| 2010 | Montblanc-Simplo GmbH v. Colibri Corp. | 739 F. Supp. 2d 143 | 15 |
| 2010 | Montblanc-Simplo Gmbh v. Colibri Corp. | 692 F. Supp. 2d 245 | 14 |
Showing the 15 most-cited of 32 authored opinions in our data. “Cited” is inbound citations across the CourtListener corpus. Case links open the ruling’s full text (CourtListener) or its page here; read the methodology and verify against the primary source.
Questions & answers
- Who appointed Kiyo A. Matsumoto?
- President George W. Bush appointed Kiyo A. Matsumoto to the U.S. District Court for the Eastern District of New York in 2008.
- Was Kiyo A. Matsumoto appointed by a Democrat or a Republican?
- Kiyo A. Matsumoto was appointed by President George W. Bush, a Republican. JudicialFinder records the appointing president's party, not a judge's own politics.
- What was Kiyo A. Matsumoto's confirmation vote?
- Kiyo A. Matsumoto was confirmed by voice vote on July 17, 2008. No senator-by-senator tally was recorded.
- Which court is Kiyo A. Matsumoto on?
- Kiyo A. Matsumoto is a Judge on the U.S. District Court for the Eastern District of New York.
Sources
Each fact on this page traces to a primary public record.
- FJC Biographical Directory
- CourtListener bulk data (Free Law Project): authored opinions & citation counts
How we source & reconcile data → Data & Sources
See something wrong? Report an error. Fixes are logged in the corrections log.
18 years on the U.S. District Court for the Eastern District of New York. Data as of 2026-08-10. Informational only; verify against the primary source before relying. Not a consumer report (FCRA).