Recognized nationally as a rising star in the Supreme Court and appellate bar, Parker Rider-Longmaid has significant argument and briefing experience before federal and state appellate and trial courts across the United States. He has argued before the Supreme Court and the Second, Fourth, Fifth, Seventh, Ninth, and Tenth Circuits and led briefing and strategy in the Supreme Court and all of the federal circuit courts of appeals.
Lawdragon Honors
| Honor | Year | Practice |
|---|---|---|
| The 2026 Lawdragon 500 Leading Global Litigators | 2026 | Appellate, Global Disputes |
| The 2026 Lawdragon 500 Leading Litigators in America | 2026 | Appellate, inc. Supreme Court |
| The 2024 Lawdragon 500 X – The Next Generation | 2024 | Supreme Court, Appellate |
In Reed v. Goertz, Rider-Longmaid led a team from Skadden, the Innocence Project, and other firms to secure a U.S. Supreme Court victory for longtime pro bono client Rodney Reed, a Texas death-row inmate who has steadfastly maintained his innocence for more than two decades. Rider-Longmaid argued the case, his first before the Supreme Court, in October 2022, after convincing the Court to grant review in April 2022. In April 2023, the Court sided with Reed, reversing the Fifth Circuit and holding that his 42 U.S.C. § 1983 suit seeking DNA testing of crime-scene evidence was timely. The decision has significant ramifications for inmates with innocence claims seeking access to DNA testing.
Reed was one of four Supreme Court merits cases that Skadden’s Supreme Court and Appellate Practice briefed and argued during the Court’s 2022 Term — more than almost any other law firm. Rider-Longmaid helped guide strategy and lead drafting in each of those cases. He also helped convince the Court to grant review in two cases for the October 2023 Term, one case for the October 2024 Term, and another for the October 2025 Term.
Beyond the Supreme Court, Rider-Longmaid also plays leading roles in the Practice’s major matters before the federal courts of appeals. His work ranges from constitutional and administrative law to tax, preemption, arbitration, antitrust, bankruptcy, class-certification, and employment, as well as federal Indian law, criminal defense and habeas corpus, and voting rights. Rider-Longmaid’s work has led to significant wins, including:
- Airlines for America v. Department of Transportation: A unanimous (17-0) victory for Airlines for America before the en banc Fifth Circuit, convincing the court to vacate a Department of Transportation rule that dictated how airlines communicated with their customers about ancillary fees. The victory follows earlier success in obtaining a stay of the rule pending appeal because it likely exceeded the DOT’s statutory authority
- In re Credit Default Swaps Antitrust Litigation: A victory on behalf of Citibank and affiliates before the Second Circuit, which upheld enforcement of a settlement release barring investment funds from asserting antitrust claims against a group of banks stemming from their participation in the credit default swaps market
- Eaton Corporation & Subsidiaries v. Commissioner: A groundbreaking victory for the Eaton Corporation in Sixth Circuit transfer-pricing cross-appeals with more than $350 million at stake, where the court stated the “tax collector” is not “above the law” and “sid[ed] with Eaton on all issues presented”
- Airlines for America v. City and County of San Francisco: A precedent-setting victory for Airlines for America (A4A) before the Ninth Circuit, which held that civil penalties can make government action regulatory and subject it to federal preemption, and remanded the case for the district court to consider A4A’s preemption arguments under the Airline Deregulation Act, Employee Retirement Income Security Act, and Railway Labor Act
Rider-Longmaid maintains an active pro bono practice, representing clients in criminal, habeas, immigration, and constitutional cases at all levels of the federal courts. For example, he secured a Fourth Circuit win for a defendant erroneously sentenced as a career offender, United States v. Cannady, and habeas relief for a client whose criminal defense attorney failed to provide him with the effective assistance of counsel guaranteed by the Sixth Amendment, Cook v. Foster, following oral arguments in which judges praised his advocacy.