Who appointed Leonard Philip Stark?

President Joseph R. Biden appointed Leonard Philip Stark to the U.S. Court of Appeals for the Federal Circuit in 2022.

Was Leonard Philip Stark appointed by a Democrat or a Republican?

Leonard Philip Stark was appointed by President Joseph R. Biden, a Democrat. JudicialFinder records the appointing president's party, not a judge's own politics.

What was Leonard Philip Stark's confirmation vote?

The Senate confirmed Leonard Philip Stark 61–35 on February 9, 2022.

Federal Circuit / Appointed 2022 / Active

Leonard Philip Stark

Judge, U.S. Court of Appeals for the Federal Circuit

Appointed by President Joseph R. Biden in 2022 and confirmed by the Senate 61–35, Leonard Philip Stark is a Judge on the U.S. Court of Appeals for the Federal Circuit. He earned a law degree from Yale Law School in 1996. He previously served on the U.S. District Court for the District of Delaware. Opinions & record ↓ Sources ↓

Born: 1969 · age 57
Appointed by: Joseph R. Biden, 2022
Confirmed: 61–35
Education: University of Delaware 1991 · Yale Law School 1996
Succeeded: Kathleen McDonald O'Malley

Federal judicial service

Year	Court	Appointed by	Vote
2010	District of Delaware succeeded Kent A. Jordan	Obama (D)	Voice vote
2022	Federal Circuit succeeded Kathleen McDonald O'Malley	Biden (D)	61–35

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

Nomination Confirmed 61–35 on February 9, 2022 · 117th Congress, Roll Call 49. Each senator links to their judicial-voting record.

Voted to confirm · 61

47 D, 12 R, 2 I

Voted against · 35

35 R

Did not vote · 4

1 D, 3 R

Education

University of Delaware	B.A., B.S., M.A.	1991
University of Oxford, Magdalen College	D.Phil.	1993
Yale Law School	J.D.	1996

Judicial Record

Caseload & case types

In our data, Stark was assigned 4,541 district-court cases (2000–2024). Median time from filing to termination: 232 days across 4,520 closed cases.

Intellectual property52%

Antitrust, securities & banking7%

Personal-injury torts7%

Prisoner & habeas7%

Contract6%

Other federal statutes6%

Other15%

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 197 of Stark’s decisions reviewed on the merits by the U.S. courts of appeals in our data, 169 were affirmed, 15 reversed or vacated, and 13 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, Stark authored 42 published opinions for the court (2007–2012). Most cited: Gonzalez v. Astrue (65 citations).

Published, precedential opinions from the CourtListener corpus. Counts and rankings are objective and recomputable: how we count. We describe the record, not the judge.

Selected opinions

Year	Case	Citation	Cited
2008	Gonzalez v. Astrue	537 F. Supp. 2d 644	65
2008	Power Integrations, Inc. v. BCD Semiconductor Corp.	547 F. Supp. 2d 365	52
2011	Intellectual Ventures I LLC v. Checkpoint Software Technologies Ltd.	797 F. Supp. 2d 472	32
2011	Mata v. Eclipse Aerospace, Inc. (In Re AE Liquidation, Inc.)	451 B.R. 343	22
2011	Jfe Steel Corp. v. Ici Americas, Inc.	797 F. Supp. 2d 452	21
2011	Tradimpex Egypt Co. v. Biomune Co.	777 F. Supp. 2d 802	13
2010	Icu Medical, Inc. v. Rymed Technologies, Inc.	752 F. Supp. 2d 486	12
2010	Thomas v. BOARD OF EDUC. OF BRANDYWINE SCHOOL	759 F. Supp. 2d 477	11
2008	Madukwe v. Delaware State University	552 F. Supp. 2d 452	10
2011	nCube Corp. v. SeaChange International, Inc.	809 F. Supp. 2d 337	9
2010	LE v. City of Wilmington	736 F. Supp. 2d 842	8
2010	Research Foundation of State University v. Mylan Pharmaceuticals Inc.	723 F. Supp. 2d 638	8
2009	ING Bank, FSB v. PNC Financial Services Group, Inc.	629 F. Supp. 2d 351	8
2011	LEADER TECHNOLOGIES, INC. v. Facebook, Inc.	770 F. Supp. 2d 686	7
2011	Power Integrations, Inc. v. Fairchild Semiconductor International Inc.	762 F. Supp. 2d 710	7

Showing the 15 most-cited of 42 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 Leonard Philip Stark?: President Joseph R. Biden appointed Leonard Philip Stark to the U.S. Court of Appeals for the Federal Circuit in 2022.
Was Leonard Philip Stark appointed by a Democrat or a Republican?: Leonard Philip Stark was appointed by President Joseph R. Biden, a Democrat. JudicialFinder records the appointing president's party, not a judge's own politics.
What was Leonard Philip Stark's confirmation vote?: The Senate confirmed Leonard Philip Stark 61–35 on February 9, 2022.
Which court is Leonard Philip Stark on?: Leonard Philip Stark is a Judge on the U.S. Court of Appeals for the Federal Circuit.

Sources

Each fact on this page traces to a primary public record.

How we source & reconcile data → Data & Sources

See something wrong? Report an error. Fixes are logged in the corrections log.

4 years on the U.S. Court of Appeals for the Federal Circuit. Data as of 2026-08-10. Informational only; verify against the primary source before relying. Not a consumer report (FCRA).