Jordanne M. Steiner
Associate
Jordanne Steiner is an associate in the Washington, D.C., office of Wilson Sonsini Goodrich & Rosati, where she is a member of the firm’s antitrust and competition practice.
Jordanne advises clients on complex civil and criminal antitrust matters—ranging from grand jury investigations and civil investigations to private litigation and compliance—across industries such as pharmaceuticals, healthcare, technology, manufacturing, financial services, and electronic gaming. She specializes in advising clients at the intersection of antitrust and labor and employment laws, with a focus on no-poach agreements, non-competes, wage-fixing, and non-solicitation provisions.
Prior to joining Wilson Sonsini, Jordanne clerked for the Honorable Judges Nebeker, Ferren, Steadman, Ruiz, and Washington at the District of Columbia Court of Appeals.
Experience
Jordanne Steiner is an associate in the Washington, D.C., office of Wilson Sonsini Goodrich & Rosati, where she is a member of the firm’s antitrust and competition practice.
Jordanne advises clients on complex civil and criminal antitrust matters—ranging from grand jury investigations and civil investigations to private litigation and compliance—across industries such as pharmaceuticals, healthcare, technology, manufacturing, financial services, and electronic gaming. She specializes in advising clients at the intersection of antitrust and labor and employment laws, with a focus on no-poach agreements, non-competes, wage-fixing, and non-solicitation provisions.
Prior to joining Wilson Sonsini, Jordanne clerked for the Honorable Judges Nebeker, Ferren, Steadman, Ruiz, and Washington at the District of Columbia Court of Appeals.
Education
- J.D., Catholic University of America, Columbus School of Law, 2019Summa Cum Laude; Concentration in civil litigation; Managing Editor, The Catholic University Law Review; Dean’s Academic Fellow; Moot Court National Trial Team; Recipient, Faculty Merit Full Tuition Scholarship; Recipient, The John L. Garvey Award for the Highest Academic Average
- B.A., Political Science, Stony Brook University, 2016Cum Laude; Concentration in American Law, Government, and Public Policy; Recipient, Gramer Thesis Award; Honors College; Dean’s List; Member, Pi Sigma Alpha Political Science Honor Society
- B.A., Theatre Arts, Stony Brook University, 2016Cum Laude, Honors College, Dean’s List
Associations and Memberships
- Young Lawyer Representative, Civil Practice and Procedure Committee, ABA Antitrust Section
Admissions
- Bar of the District of Columbia
Credentials
Education
- J.D., Catholic University of America, Columbus School of Law, 2019Summa Cum Laude; Concentration in civil litigation; Managing Editor, The Catholic University Law Review; Dean’s Academic Fellow; Moot Court National Trial Team; Recipient, Faculty Merit Full Tuition Scholarship; Recipient, The John L. Garvey Award for the Highest Academic Average
- B.A., Political Science, Stony Brook University, 2016Cum Laude; Concentration in American Law, Government, and Public Policy; Recipient, Gramer Thesis Award; Honors College; Dean’s List; Member, Pi Sigma Alpha Political Science Honor Society
- B.A., Theatre Arts, Stony Brook University, 2016Cum Laude, Honors College, Dean’s List
Associations and Memberships
- Young Lawyer Representative, Civil Practice and Procedure Committee, ABA Antitrust Section
Admissions
- Bar of the District of Columbia
Select Representations
Antitrust Litigation and Investigations
- Representing Viatris (formerly Mylan Pharmaceuticals) in several matters pertaining to insulin glargine, including affirmative litigation against Sanofi alleging illegal monopolization of the insulin glargine market (Mylan Pharmaceuticals et al. v. Sanofi-Aventis U.S. LLC, et al. (W.D. Pa.))
- Defending Mayne Pharma in nationwide multi-district antitrust class action brought by various purchasers alleging an industry-wide cartel involving price-fixing and customer allocation agreements and conspiracies, and in related direct-action litigation and actions brought by various state attorneys general (In re Generic Pharmaceuticals Pricing Antitrust Litigation (E.D. Pa.))
- Defending the former CEO of a healthcare company in an alleged no-poach case brought by a putative class of employees (In re Outpatient Medical Center Employee Antitrust Litigation (N.D. Ill.))
- Representing electronic gaming industry plaintiffs in a class action challenging certain parity policies (In re Valve Antitrust Litigation (W.D. Wash.))
- Defended an electronic technology company against California unfair competition claim brought by competitor
- Represented a major corporation in the digital advertising and technology sector in a grand jury investigation of the alleged no-poach agreements that resulted from the agency’s review of the company’s contemplated merger, resulting in no charges
- Representing a pharmaceutical company in third-party subpoena compliance in ongoing reverse payment case
- Represented a video technology company in third-party subpoena compliance in ongoing monopolization case
- Represented a travel technology company in third-party subpoena compliance in government challenge to proposed merger
- Represented a technology company in third-party subpoena compliance in ongoing multi-district litigation regarding alleged monopolization and attempted monopolization
Antitrust Counseling
- Labor-related antitrust risks, including no-poach agreements, non-competes, and non-solicitations
- Platform operation risks, including self-preferencing, search suppression, use of third-party data, and interoperability restrictions
- Pricing practices, including most favored nation clauses
- Pending state antitrust legislation (including California, New York, Minnesota, Connecticut, and Virginia) and its overall potential impact on business, including strategizing potential response
Matters
Select Representations
Antitrust Litigation and Investigations
- Representing Viatris (formerly Mylan Pharmaceuticals) in several matters pertaining to insulin glargine, including affirmative litigation against Sanofi alleging illegal monopolization of the insulin glargine market (Mylan Pharmaceuticals et al. v. Sanofi-Aventis U.S. LLC, et al. (W.D. Pa.))
- Defending Mayne Pharma in nationwide multi-district antitrust class action brought by various purchasers alleging an industry-wide cartel involving price-fixing and customer allocation agreements and conspiracies, and in related direct-action litigation and actions brought by various state attorneys general (In re Generic Pharmaceuticals Pricing Antitrust Litigation (E.D. Pa.))
- Defending the former CEO of a healthcare company in an alleged no-poach case brought by a putative class of employees (In re Outpatient Medical Center Employee Antitrust Litigation (N.D. Ill.))
- Representing electronic gaming industry plaintiffs in a class action challenging certain parity policies (In re Valve Antitrust Litigation (W.D. Wash.))
- Defended an electronic technology company against California unfair competition claim brought by competitor
- Represented a major corporation in the digital advertising and technology sector in a grand jury investigation of the alleged no-poach agreements that resulted from the agency’s review of the company’s contemplated merger, resulting in no charges
- Representing a pharmaceutical company in third-party subpoena compliance in ongoing reverse payment case
- Represented a video technology company in third-party subpoena compliance in ongoing monopolization case
- Represented a travel technology company in third-party subpoena compliance in government challenge to proposed merger
- Represented a technology company in third-party subpoena compliance in ongoing multi-district litigation regarding alleged monopolization and attempted monopolization
Antitrust Counseling
- Labor-related antitrust risks, including no-poach agreements, non-competes, and non-solicitations
- Platform operation risks, including self-preferencing, search suppression, use of third-party data, and interoperability restrictions
- Pricing practices, including most favored nation clauses
- Pending state antitrust legislation (including California, New York, Minnesota, Connecticut, and Virginia) and its overall potential impact on business, including strategizing potential response
Select Publications
- Co-author, "FTC Announcement of Healthcare Task Force Coincides with Joint DOJ/FTC Appearance at ONC Annual Meeting," Wilson Sonsini Alert, April 6, 2026
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Co-author with K. O'Rourke, "Trends and Developments," Cartels 2025 -- USA - Washington, Chambers and Partners Global Practice Guide, May 21, 2025
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Panelist, “The Scramble: 2024 Gaming Legal Year in Review,” Electronic Gaming Group, Wilson Sonsini, March 2025
- Co-author, “FTC on the Job: Chairman Ferguson Announces Labor Task Force,” Wilson Sonsini Alert, March 3, 2025
- Co-author with J. Bank, “The Fine Print of Competition: The Use of Jury Instructions in Labor-Related Cases to Modify the Standard of Proof,” Concurrences, Competition Law and Policy Debate, 2025 (2025 Antitrust Writing Awards Readers’ Choice Winner – Best Antitrust Academic Article – Procedure Category)
- Co-author, “2025 Year in Review: Pending Decisions at the U.S. Antitrust Agencies,” Wilson Sonsini Alert, January 24, 2025
- Co-author, “In Case You Missed It: The ABA Antitrust Section’s Fall Forum,” Wilson Sonsini Alert, November 21, 2024
- Co-author, “Department of Justice Signals Increased Scrutiny for Information Sharing,” Wilson Sonsini Alert, October 8, 2024
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Co-author with K. O'Rourke, "Trends and Developments," Cartels 2024 -- USA - Washington, Chambers and Partners Global Practice Guide, August 15, 2024
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Co-author, “Working hard or hardly working? Antitrust labour markets: an update from the United States,” 18(1) Competition Law International, 2024
- Co-author, “Competition Enforcement and the Labor Market: Too Much Too Soon?” 17 (2) Global Competition Litigation Review, 2024 (Concurrences 2026 Antitrust Writing Awards Winner – Best Antitrust Business Article – General Antitrust Category)
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Co-author, “U.S. DOJ and States File Complaint Against Apple for Alleged Monopolization of Smartphones,” Wilson Sonsini Alert, April 1, 2024
- Co-author with A. Smith, "Challenges to Acquisitions of Nascent Competitors in Biotech," Icarus, pp. 4-9, Summer 2022
- Co-author, “DOJ Antitrust Division Updates Corporate Leniency Policy,” Wilson Sonsini Alert, April 12, 2022
- Co-author with B. Snyder, “Crediting Corporate Compliance Programs in Criminal Antitrust Cases: How Strong a Wind of Change?” Competition Policy International, November 2021
- Co-author with S. Sher, J. Ferris, and M. Hale, "Distribution Merger Challenges at the FTC," Wilson Sonsini Goodrich & Rosati article, March 2021
Select Speaking Engagements
- Moderator, “Fair Play: Navigating Compliance in Labor Markets,” Wilson Sonsini webinar, March 26, 2025
- Panelist, “Antitrust and the Labor Market,” American Bar Association, hosted by the ABA Global Private Litigation Committee, May 16, 2024
Insights
Select Publications
- Co-author, "FTC Announcement of Healthcare Task Force Coincides with Joint DOJ/FTC Appearance at ONC Annual Meeting," Wilson Sonsini Alert, April 6, 2026
-
Co-author with K. O'Rourke, "Trends and Developments," Cartels 2025 -- USA - Washington, Chambers and Partners Global Practice Guide, May 21, 2025
-
Panelist, “The Scramble: 2024 Gaming Legal Year in Review,” Electronic Gaming Group, Wilson Sonsini, March 2025
- Co-author, “FTC on the Job: Chairman Ferguson Announces Labor Task Force,” Wilson Sonsini Alert, March 3, 2025
- Co-author with J. Bank, “The Fine Print of Competition: The Use of Jury Instructions in Labor-Related Cases to Modify the Standard of Proof,” Concurrences, Competition Law and Policy Debate, 2025 (2025 Antitrust Writing Awards Readers’ Choice Winner – Best Antitrust Academic Article – Procedure Category)
- Co-author, “2025 Year in Review: Pending Decisions at the U.S. Antitrust Agencies,” Wilson Sonsini Alert, January 24, 2025
- Co-author, “In Case You Missed It: The ABA Antitrust Section’s Fall Forum,” Wilson Sonsini Alert, November 21, 2024
- Co-author, “Department of Justice Signals Increased Scrutiny for Information Sharing,” Wilson Sonsini Alert, October 8, 2024
-
Co-author with K. O'Rourke, "Trends and Developments," Cartels 2024 -- USA - Washington, Chambers and Partners Global Practice Guide, August 15, 2024
-
Co-author, “Working hard or hardly working? Antitrust labour markets: an update from the United States,” 18(1) Competition Law International, 2024
- Co-author, “Competition Enforcement and the Labor Market: Too Much Too Soon?” 17 (2) Global Competition Litigation Review, 2024 (Concurrences 2026 Antitrust Writing Awards Winner – Best Antitrust Business Article – General Antitrust Category)
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Co-author, “U.S. DOJ and States File Complaint Against Apple for Alleged Monopolization of Smartphones,” Wilson Sonsini Alert, April 1, 2024
- Co-author with A. Smith, "Challenges to Acquisitions of Nascent Competitors in Biotech," Icarus, pp. 4-9, Summer 2022
- Co-author, “DOJ Antitrust Division Updates Corporate Leniency Policy,” Wilson Sonsini Alert, April 12, 2022
- Co-author with B. Snyder, “Crediting Corporate Compliance Programs in Criminal Antitrust Cases: How Strong a Wind of Change?” Competition Policy International, November 2021
- Co-author with S. Sher, J. Ferris, and M. Hale, "Distribution Merger Challenges at the FTC," Wilson Sonsini Goodrich & Rosati article, March 2021
Select Speaking Engagements
- Moderator, “Fair Play: Navigating Compliance in Labor Markets,” Wilson Sonsini webinar, March 26, 2025
- Panelist, “Antitrust and the Labor Market,” American Bar Association, hosted by the ABA Global Private Litigation Committee, May 16, 2024
Recent Insights
Alerts
FTC Announcement of Healthcare Task Force Coincides with Joint DOJ/FTC Appearance at ONC Annual Meeting
Two recent developments suggest that enforcers are poised to grapple with antitrust concerns in health tech, signaling an escalation of scrutiny into Information Blocking1 tactics that have persisted despite U.S. Department of Health and Human Services (HHS) rules and regulations designed to curtail such practices. Stakeholders and industry participants should be prepared for potential outreach.
Learn More
News Articles
Wilson Sonsini Article Wins Concurrences Antitrust Writing Award
On March 24, 2026, Concurrences, a leading European antitrust publication, announced that a Wilson Sonsini–authored article won “Best Antitrust Business Article – General Antitrust” as part of its 2026 Antitrust Writing Awards, which recognize scholarship, originality, and practical impact in competition law. Titled “Competition Enforcement and the Labor Market: Too Much Too Soon?,” the article was chosen by Concurrences editors from more than 1,500 submissions across academic, business, and soft law categories.
Learn More
Recent Events
WSGR Events
Fair Play: Navigating Compliance in Labor Markets
Join us for a webinar program designed to equip business professionals with crucial insights into the intersection of antitrust, consumer protection, and labor and employment laws, especially in light of the FTC's heightened focus on labor markets. As the FTC targets anticompetitive practices and the DOJ intensifies efforts to prosecute certain violations, businesses must stay informed to avoid legal risks, fines, and potential criminal charges.
Learn More
Speaking Engagements
Antitrust and the Labor Market (ABA Webinar)
The ABA Antitrust: Global Private Litigation Committee is hosting a discussion of antitrust enforcement in U.S. and EU labor markets, including an overview of the applicable legal frameworks and economic theories of harm. Wilson Sonsini associate Jordanne Steiner will be among the speakers discussing non-competition, wage-fixing, no-poach, and information-sharing agreements.
Learn More
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