A nationally recognized litigator, advisor, and trial lawyer, Joanna serves as Co-Chair of Jenner & Block's Business Litigation Practice and its Mass Torts and Product Liability Practice. She has deep experience in complex civil litigation, having handled nearly every kind of high-stakes dispute. According to Chambers USA, where Joanna is ranked in Commercial Litigation, clients describe her as “brilliant," reporting that she “crafts unique legal strategies” that “yield significant, positive results” while “identifying the critical non-legal concerns that all businesses must consider when disputes arise.”
As a trial lawyer, Joanna has extensive experience representing companies and individuals in the courtroom. She has led over 15 trial teams in federal court, state court, and in arbitration, representing both plaintiffs and defendants, including commercial disputes, securities fraud, corporate governance and shareholder disputes, novel constitutional claims, product liability, class actions, and large MDL bellwethers.
She is also a highly skilled crisis manager, regularly called upon by Fortune 100 companies who told Chambers they rely on her “responsive no-nonsense advice” dispensed while “navigating difficult circumstances to get to the right result.” Her clients include companies, officers, and directors in diverse sectors, including consumer goods, chemicals, energy, technology, and financial services.
Most recently, Joanna advised 3M in its agreement with the court-appointed negotiating plaintiffs' counsel to resolve the Combat Arms Earplug litigation against Aearo Technologies (Aearo) and 3M. She successfully resolved that case for $6 billion and is overseeing its implementation and final resolution. As part of that resolution, she successfully argued for a novel application of Section 3(a)(10) of the Securities Laws permitting the use of $1 billion in securities.
Her reputation as a forceful advocate is recognized across the industry. In addition to being ranked by Chambers in General Commercial Litigation, Crain’s New York Business named Joanna as a Notable Litigators and Trial Attorney in 2025 and a notable Woman in the Law in 2023. Lawdragon has ranked her as a Leading Lawyer and Leading Litigator. Benchmark recognized her as a 40 & Under honoree in 2023 and as a Future Star in 2022 and for 2025. The American Lawyer named her Young Lawyer of the Year in 2021 and Bloomberg Law named her to their highly competitive “They’ve Got Next: The 40 and under” list in 2024.
Joanna is deeply committed to her pro bono practice, securing significant victories in the nation’s most critical matters of recent years. Most recently, just 72 hours after the Dobbs decision reversing Roe v. Wade, she obtained injunctive relief against multiple abortion bans in Louisiana—the first in the country. She went on to obtain three additional TROs and a preliminary injunction before favorably settling the case. She currently represents a reproductive healthcare clinic in Florida wrongly denied their license to provide reproductive healthcare. She also serves on the board of New York Lawyers for the Public Interest.
One of the more creative and tenacious litigators out there. She stands out for her ability to master complex cases quickly and her practical problem solving.
Chambers USA
Representative Matters
- Handling high-impact constitutional litigation in Louisiana following the Supreme Court's decision in Dobbs v. Jackson Women’s Health Organization; just 72 hours after Dobbs, Joanna won the first ruling in the nation to block the implementation of a state’s unconstitutionally vague “trigger bans”; she then secured a preliminary injunction enjoining the laws and is now proceeding with the underlying lawsuit challenging the laws.
- Defended a multinational investment bank and financial services company in disputes involving tortious interference claims asserted by another investment bank concerning employment relationships of the respective firms’ investment bankers.
- Defended a multinational automotive and clean energy company in a spate of litigations and arbitrations involving the Fair Credit Reporting Act.
- Defended a public company in major shareholder litigation and proxy contest.
- Conducted an internal investigation into independent directors on the board of a public company and bringing securities fraud claims against the independent directors.
- Sued a multinational technology company and online video sharing platform for copyright infringement on behalf of a putative class seeking billions in damages.
- Represented a public-benefit corporation to advocate for consumers’ property rights in their personal data.
- Defended a major luxury resort in an environmental CERCLA inquiry.
- Defended the CEO of a ride share company in a novel antitrust class action lawsuit.
- Sued a multinational automotive manufacturing company for product liability claims that resulted in favorable jury findings at trial.
- Represented over 500 women Olympians and professional and collegiate athletes in a first-of-its-kind Supreme Court amicus brief in Dobbs v. Jackson Women’s Health, supporting women’s right and access to abortion healthcare.
- Represented the former CEO of a major insurance company in a breach-of-contract dispute that settled favorably three days before trial.
- Represented one of the co-founders of a major beverage company in a judicial buyout proceeding.
- Represented an international airline’s minority shareholder in a potentially hostile takeover.
- Defended a major New York restaurateur in a trademark and licensing dispute.
- Represented a hedge fund in bringing fraud claims and securing remedies.
- Defended an international bank in residential mortgage-backed securities litigation.
- Represented women and children trafficked on Backpage in ongoing litigation.
- Sued the federal government for a Fifth Amendment taking based on the federal bailout of a multinational finance and insurance corporation, resulting in liability findings in the Court of Federal Claims.
- Represented a sexual assault survivor in a civil lawsuit that settled favorably at jury selection.
- Represented an Ecuadorean teenager in asylum proceedings.
Credentials
Service / Recognition
Overview
A nationally recognized litigator, advisor, and trial lawyer, Joanna serves as Co-Chair of Jenner & Block's Business Litigation Practice and its Mass Torts and Product Liability Practice. She has deep experience in complex civil litigation, having handled nearly every kind of high-stakes dispute. According to Chambers USA, where Joanna is ranked in Commercial Litigation, clients describe her as “brilliant," reporting that she “crafts unique legal strategies” that “yield significant, positive results” while “identifying the critical non-legal concerns that all businesses must consider when disputes arise.”
As a trial lawyer, Joanna has extensive experience representing companies and individuals in the courtroom. She has led over 15 trial teams in federal court, state court, and in arbitration, representing both plaintiffs and defendants, including commercial disputes, securities fraud, corporate governance and shareholder disputes, novel constitutional claims, product liability, class actions, and large MDL bellwethers.
She is also a highly skilled crisis manager, regularly called upon by Fortune 100 companies who told Chambers they rely on her “responsive no-nonsense advice” dispensed while “navigating difficult circumstances to get to the right result.” Her clients include companies, officers, and directors in diverse sectors, including consumer goods, chemicals, energy, technology, and financial services.
Most recently, Joanna advised 3M in its agreement with the court-appointed negotiating plaintiffs' counsel to resolve the Combat Arms Earplug litigation against Aearo Technologies (Aearo) and 3M. She successfully resolved that case for $6 billion and is overseeing its implementation and final resolution. As part of that resolution, she successfully argued for a novel application of Section 3(a)(10) of the Securities Laws permitting the use of $1 billion in securities.
Her reputation as a forceful advocate is recognized across the industry. In addition to being ranked by Chambers in General Commercial Litigation, Crain’s New York Business named Joanna as a Notable Litigators and Trial Attorney in 2025 and a notable Woman in the Law in 2023. Lawdragon has ranked her as a Leading Lawyer and Leading Litigator. Benchmark recognized her as a 40 & Under honoree in 2023 and as a Future Star in 2022 and for 2025. The American Lawyer named her Young Lawyer of the Year in 2021 and Bloomberg Law named her to their highly competitive “They’ve Got Next: The 40 and under” list in 2024.
Joanna is deeply committed to her pro bono practice, securing significant victories in the nation’s most critical matters of recent years. Most recently, just 72 hours after the Dobbs decision reversing Roe v. Wade, she obtained injunctive relief against multiple abortion bans in Louisiana—the first in the country. She went on to obtain three additional TROs and a preliminary injunction before favorably settling the case. She currently represents a reproductive healthcare clinic in Florida wrongly denied their license to provide reproductive healthcare. She also serves on the board of New York Lawyers for the Public Interest.
One of the more creative and tenacious litigators out there. She stands out for her ability to master complex cases quickly and her practical problem solving.
Chambers USA
Areas of Focus
Representative Matters
- Handling high-impact constitutional litigation in Louisiana following the Supreme Court's decision in Dobbs v. Jackson Women’s Health Organization; just 72 hours after Dobbs, Joanna won the first ruling in the nation to block the implementation of a state’s unconstitutionally vague “trigger bans”; she then secured a preliminary injunction enjoining the laws and is now proceeding with the underlying lawsuit challenging the laws.
- Defended a multinational investment bank and financial services company in disputes involving tortious interference claims asserted by another investment bank concerning employment relationships of the respective firms’ investment bankers.
- Defended a multinational automotive and clean energy company in a spate of litigations and arbitrations involving the Fair Credit Reporting Act.
- Defended a public company in major shareholder litigation and proxy contest.
- Conducted an internal investigation into independent directors on the board of a public company and bringing securities fraud claims against the independent directors.
- Sued a multinational technology company and online video sharing platform for copyright infringement on behalf of a putative class seeking billions in damages.
- Represented a public-benefit corporation to advocate for consumers’ property rights in their personal data.
- Defended a major luxury resort in an environmental CERCLA inquiry.
- Defended the CEO of a ride share company in a novel antitrust class action lawsuit.
- Sued a multinational automotive manufacturing company for product liability claims that resulted in favorable jury findings at trial.
- Represented over 500 women Olympians and professional and collegiate athletes in a first-of-its-kind Supreme Court amicus brief in Dobbs v. Jackson Women’s Health, supporting women’s right and access to abortion healthcare.
- Represented the former CEO of a major insurance company in a breach-of-contract dispute that settled favorably three days before trial.
- Represented one of the co-founders of a major beverage company in a judicial buyout proceeding.
- Represented an international airline’s minority shareholder in a potentially hostile takeover.
- Defended a major New York restaurateur in a trademark and licensing dispute.
- Represented a hedge fund in bringing fraud claims and securing remedies.
- Defended an international bank in residential mortgage-backed securities litigation.
- Represented women and children trafficked on Backpage in ongoing litigation.
- Sued the federal government for a Fifth Amendment taking based on the federal bailout of a multinational finance and insurance corporation, resulting in liability findings in the Court of Federal Claims.
- Represented a sexual assault survivor in a civil lawsuit that settled favorably at jury selection.
- Represented an Ecuadorean teenager in asylum proceedings.
Credentials
Admissions
- New York
Education
- Columbia University School of Law, JD, Columbia Law Review, Executive Notes Editor; Harlan Fiske Stone Scholar; Human Rights Fellow
- Fordham University, MA, Presidential Scholarship, Philosophy
- Boston College, BA, magna cum laude, Phi Beta Kappa, Philosophy and French
Court Admissions
- US Supreme Court, 2023
- US District Court, Eastern District of New York, 2017
- US District Court, Southern District of New York, 2016
- New York Supreme Court, 2023
Clerkships
- Hon. David F. Hamilton, US Court of Appeals, Seventh Circuit
- Hon. Alvin K. Hellerstein, US District Court, Southern District of New York
Service / Recognition
Awards
- The BTI Class Action Leaders, 2026
- Crain’s New York Business, Notable Litigators and Trial Attorneys, 2025
- Lawdragon 500 Leading Global Antitrust & Competition Lawyers, 2026
- Lawdragon 500 Leading Global Bankruptcy & Restructuring Lawyers, 2026
- Lawdragon 500 Leading Litigators in America, 2025-2026
- Lawdragon 500 Leading Lawyers in America, Commercial Litigation, Inc., Antitrust, Financial, White Collar, 2022-2026
- Bloomberg Law, They've Got Next, 2024
- Chambers USA, Litigation: General Commercial (New York), 2024-2026
- Crain’s New York Business, Notable Women in Law, 2023, 2026
- Benchmark, Future Star, 2022 and 2025; 40 & Under, 2023
- New York Metro Super Lawyers, Rising Star, 2017-2023
- The American Lawyer, Young Lawyer of the Year, 2021
Community
- New York Lawyers for Public Interest, Board Member