Appellate & Supreme Court

Cozen O’Connor’s nationally ranked appellate practice — named to the National Law Journal’s 2020 Appellate Hot List — represents clients in the U.S. Supreme Court and in federal and state appellate courts throughout the country.  Our appellate lawyers help guide clients through all stages of the appellate process, but our work often begins pre-appeal. We collaborate with trial teams at all stages of litigation, including during and prior to trial, pre- and post-verdict, and throughout the appellate process.

The firm’s attorneys have successfully handled appellate matters in such diverse legal areas as constitutional law, class actions, antitrust, securities, contract law, business torts, labor and employment, medical device and drug litigation, toxic torts, intellectual property, insurance coverage, subrogation, professional liability, health care, and white collar criminal defense. Our appellate lawyers work closely with our clients, our trial teams, and experts to deliver excellent results. We also represent our clients and related trade organizations in filing amicus briefs on important issues before the U.S. Supreme Court and other appellate courts throughout the country.

There are only limited opportunities to make the winning arguments to an appellate court — a few briefs and oral argument — so experience, big-picture strategic thinking, and foresight are key to appellate success. We understand that appealing a trial court ruling is often a high-stakes proposition with the potential for a business-altering result. With this in mind, we never lose sight of our clients’ business goals and realities. 

One example of Cozen O’Connor’s appellate prowess is our victory before the U.S. Supreme Court in a groundbreaking First Amendment case, representing the appellant in Manhattan Community Access Corp. v. Halleck. The dispute centered on questions of private versus governmental activity and who can be sued under the First Amendment. Convincing the Court to grant certiorari presented a significant challenge, and our team made key strategy decisions at that stage that not only persuaded the Court to take the case, but led directly to the victory. In that case, as in all appeals we handle, our focus was on framing the issue and keeping the Court focused on our framework, regardless of the other side’s repositioning. A perfectly presented appeal does not ask judges to wrestle with a decision, but rather asks them to endorse an inexorable conclusion.

Cozen O’Connor’s appellate team includes more than 50 attorneys around the country with significant appellate experience. They have collectively handled hundreds of appellate matters, authored important amicus briefs on behalf of industry groups and other interested parties, served in prestigious judicial clerkships, authored law review articles, served on law review editorial boards, and participated in numerous court-related committees. This level of professional and academic activity keeps our attorneys on the cutting edge of trends in the appellate courts, which, in turn, allows us to offer our clients superb service and prescient strategic advice.

SERVICE AREAS

  • Handle all types of appellate matters in any appellate forum
  • Analyze the record, supporting documents, and relevant law to advise clients and develop appellate strategies that ensure the most compelling legal arguments are raised to an appellate court
  • Provide advice on potential interlocutory appeals
  • Draft persuasive and comprehensive appellate briefs and other appellate documents
  • Present compelling oral arguments
  • Advise trial counsel prior to and during trial to ensure the proper identification and preservation of appellate issues
  • Draft compelling amicus curiae briefs that are never mere rehashes of the parties’ arguments

 

Share on LinkedIn

Experience

Publications

Supreme Court Confronts Difficulty of Moderating Social Media Platforms [The Legal Intelligencer]

April 26, 2024

Stephen Miller and Pamela Dorian contributed an article to The Legal Intelligencer discussing two cases, Moody v. NetChoice and NetChoice v. Paxton, before the U.S. Supreme Court that will impact the future of social media content.

US Supreme Court Considers Overhaul to Administrative Law [The Legal Intelligencer]

March 01, 2024

The Supreme Court "is currently considering its most consequential challenge to 'the administrative state' in decades," say Stephen Miller and Andrew Linz in an article in The Legal Intelligencer.

US Supreme Court Confronts Independent State Legislature Doctrine [The Legal Intelligencer]

January 06, 2023

Stephen Miller and Pamela Dorian published an article in The Legal Intelligencer discussing The Supreme Court’s consideration of the Independent State Legislator theory in Moore v. Harper.

Third Circuit Rejects “Intended Loss” as Basis to Sentence Economic Crimes

December 02, 2022

On November 29, the Third Circuit issued a decision that will substantially impact the sentences imposed for federal fraud offenses.

The Opioid Epidemic Reaches the US Supreme Court

April 15, 2022

Leigh Ann Benson and Stephen Miller contributed an article to The Legal Intelligencer discussing how in Ruan v. United States, the U.S. Supreme Court will decide whether a jury should consider a doctor’s subjective intent when assessing a potential violation of the Controlled Substances Act.

US Supreme Court Poised to Revolutionize College Athletics

April 29, 2021

Stephen Miller and Jonathan Ciriello contributed an article to The Legal Intelligencer discussing how change is coming to the NCAA’s amateurism model.

US Supreme Court Considers Religious-Freedom Case From Phila.

March 03, 2021

Stephen Miller and Rohan Mohanty contributed an article to The Legal Intelligencer discussing the U.S. Supreme Court case of Fulton v. City of Philadelphia.

A Long, Broken Arm Internet Defamation & Personal Jurisdiction

August 07, 2020

Michael de Leeuw and Tamar Wise contributed an article to the ACC New York City Chapter newsletter discussing issues associated with personal jurisdiction and the Internet.

The Constitution and Religious Gatherings [The National Law Journal]

June 24, 2020

Michael de Leeuw and Tamar Wise contributed an article to The National Law Journal discussing the constitutional limits on infringements on religious gatherings.

Pennsylvania Courts May Not Deny Those Under Court Supervision Access to Medical Marijuana [Alert]

June 22, 2020

Tom Wilkinson and Ryan Kelly discuss the firm's recent win before the Pennsylvania Supreme Court.

Events & Seminars

Past Events

WDTL 2016 Annual Tort Law Update

December 09, 2016 - Seattle, WA

Appeals: Writing, Editing, Persuasion & Ethics

March 29, 2012 - Seattle, WA

In The News

Best Lawyers Honors More Than 200 Cozen O'Connor Attorneys in its Best Lawyers in America 2025 Edition

August 15, 2024

Best Lawyers selected 242 Cozen O’Connor lawyers from 24 of the firm’s U.S. offices for inclusion in the 2025 edition of The Best Lawyers in America and Best Lawyers: Ones to Watch in America.

Eleven Cozen O’Connor Attorneys Recognized as Washington, D.C., Super Lawyers and Rising Stars

April 22, 2024

Seven attorneys were recognized as Super Lawyers and four were named Rising Stars, a list that recognizes attorneys under the age of 40.

Three Cozen O’Connor Attorneys Recognized as 2024 Southern California Super Lawyers

January 12, 2024

Los Angeles attorney Susan A. Grueneberg and Santa Monica attorneys Thomas W. Casparian and Paul S. Rutter to its 2024 Southern California Super Lawyers list.

Best Lawyers Honors More Than 200 Cozen O'Connor Attorneys to its Best Lawyers in America 2024 Edition

August 17, 2023

Best Lawyers selected 232 Cozen O’Connor lawyers from 24 of the firm’s U.S. offices for inclusion in the 2024 edition of The Best Lawyers in America.

Five Cozen O’Connor Attorneys Recognized as 2023 Southern California Super Lawyers

February 07, 2023

Super Lawyers has named Los Angeles attorneys Susan A. Grueneberg and Donald C. Nanney and Santa Monica attorneys Thomas W. Casparian, Jonathan S. Gross, and Paul S. Rutter to its 2023 Southern California Super Lawyers list.

More Than 200 Cozen O’Connor Attorneys Named Best Lawyers and Ones to Watch

August 22, 2022

210 Cozen O’Connor lawyers from 24 of the firm’s nationwide offices for inclusion in the 2023 edition of The Best Lawyers in America.

Eight Cozen O’Connor Attorneys Recognized as 2022 Southern California Super Lawyers

January 20, 2022

Super Lawyers has named eight Cozen O'Connor attorneys to its 2022 Southern California Super Lawyers list.

Cozen O’Connor Named Law Firm of the Year by The Legal Intelligencer

November 12, 2020

The Legal Intelligencer highlighted the firm’s many legal victories as its reason for the honor, including our recent victory before the U.S. Supreme Court, closing $510 million sale of a longtime client, and our win in the Second Circuit on behalf of the 9/11 families.

Cozen O’Connor Named to the National Law Journal’s 2020 Appellate Hot List

November 02, 2020

Cozen O’Connor is pleased to announce that the firm has been named to the National Law Journal’s 2020 Appellate Hot list.

Appellate Hot List 2020: Cozen O'Connor

November 01, 2020

Michael de Leeuw was featured in a Q&A held by the National Law Journal discussing Cozen O'Connor being named to the NLJ 2020 Appellate Hot List.

Myriad Section 230 Bills Show Agreement Still Out Of Reach

October 16, 2020

Michael de Leeuw was quoted in a Law360 article discussing how a politically neutral proposal such as the Pact Act will likely get more traction than other bills that seek to impose stricter oversight of social media platforms.

Super Lawyers Recognizes 21 Cozen O’Connor Attorneys in New York

September 29, 2020

Super Lawyers has named 21 Cozen O’Connor attorneys to its 2020 New York Super Lawyers and Rising Stars list.

Cozen O’Connor Taps Nevada Litigator Karl O. Riley to Manage its Las Vegas Office

September 08, 2020

Riley joins the firm as a member within the firm’s Commercial Litigation department. Additionally, Riley will be a part of the Labor & Employment, Class Actions, and Appellate practice groups.

Nine Cozen O’Connor Attorneys Recognized as 2020 Southern California Super Lawyers

January 15, 2020

Super Lawyers has named nine Cozen O'Connor attorneys to its 2020 Southern California Super Lawyers.

Contacts

Michael B. de Leeuw

Vice Chair, Business Litigation

mdeleeuw@cozen.com

(212) 908-1331

Stephen A. Miller

Co-Chair, White Collar Defense & Investigations

samiller@cozen.com

(215) 665-4736

People

Awards

Three Cozen O’Connor Attorneys Recognized as 2024 Southern California Super Lawyers

January 12, 2024

Los Angeles attorney Susan A. Grueneberg and Santa Monica attorneys Thomas W. Casparian and Paul S. Rutter to its 2024 Southern California Super Lawyers list.

Best Lawyers Honors More Than 200 Cozen O'Connor Attorneys to its Best Lawyers in America 2024 Edition

August 17, 2023

Best Lawyers selected 232 Cozen O’Connor lawyers from 24 of the firm’s U.S. offices for inclusion in the 2024 edition of The Best Lawyers in America.

Eight Cozen O’Connor Attorneys Recognized as 2022 Southern California Super Lawyers

January 20, 2022

Super Lawyers has named eight Cozen O'Connor attorneys to its 2022 Southern California Super Lawyers list.

Cozen O’Connor Named Law Firm of the Year by The Legal Intelligencer

November 12, 2020

The Legal Intelligencer highlighted the firm’s many legal victories as its reason for the honor, including our recent victory before the U.S. Supreme Court, closing $510 million sale of a longtime client, and our win in the Second Circuit on behalf of the 9/11 families.

Cozen O’Connor Named to the National Law Journal’s 2020 Appellate Hot List

November 02, 2020

Cozen O’Connor is pleased to announce that the firm has been named to the National Law Journal’s 2020 Appellate Hot list.

Nine Cozen O’Connor Attorneys Recognized as 2020 Southern California Super Lawyers

January 15, 2020

Super Lawyers has named nine Cozen O'Connor attorneys to its 2020 Southern California Super Lawyers.

17 Cozen O’Connor Attorneys Recognized as New York Super Lawyers and Rising Stars

September 27, 2019

Super Lawyers has named 17 Cozen O'Connor attorneys to its 2019 New York Super Lawyers and Rising Stars list.

Related Practice Areas

Keep up-to-date with the latest news from Cozen O'Connor

Enter your City or Zip.

Probably shouldn't change this:
Sign up to receive alerts, publications, and event / webinar invites.

By submitting your contact information, you are giving Cozen O'Connor consent to contact you via email.