J. Ryan Lopatka


Chicago Office
(212) 696-3733

J. Ryan Lopatka, a partner in KSF’s New York and Chicago offices, focuses primarily on federal securities class action litigation.

Mr. Lopatka was a member of the team that litigated against Halliburton Company in one of the most closely followed securities cases of all time. The litigation, which spanned more than a decade, included two landmark decisions from the Supreme Court. The first, Erica P. John Fund, Inc. v. Halliburton, 1331 S.Ct. 2179 (2011), a 9-0 unanimous opinion, reversed the rulings of the district court and Fifth Circuit Court of Appeals denying the investors’ motion for class certification on loss causation grounds. The second, Halliburton Co. v. Erica P. John Fund, Inc., 134 S.Ct. 2389 (2014), preserved the fraud-on-the-market doctrine, and helped pave the way towards a $100 million recovery for the class.

More recent successes include Pearlstein v. BlackBerry Limited, et al., No. 13-cv-7060 (S.D.N.Y.) and In re Chicago Bridge & Iron N.V. Securities Litigation, No. 1:17-cv-1580 (S.D.N.Y.), which resulted in settlement agreements on the eve of trial for $165 million and $44 million, respectively. 

Mr. Lopatka successfully argued before the United States Court of Appeals for the Second Circuit to vacate an order from the Southern District of New York granting motion to dismiss in a securities class action against NewLink Genetics Corp. The 26-page ruling from the three-judge panel in Abramson v. NewLink Genetics Corp., 2020 U.S. App. LEXIS 21545 (2d Cir. July 13, 2020) revitalized investors’ claims against the bio-pharmaceutical company, and further developed the law of the Second Circuit with regard to loss causation and the actionability of opinion statements under the Supreme Court’s 2015 decision in Omnicare, Inc. v. Laborers Dist. Council Const. Industry Pension Fund, 575 U.S. 175 (2015). After remand, KSF secured a $13.5 million settlement for the class, an achievement the late Hon. William H. Pauley commended: “you turned a case that was a loser in the district court into a victory for plaintiffs….”

Before a three-judge panel of the Tenth Circuit in Hogan v. Pilgrim’s Pride Corp., 73 F. 4th 1150 (10th Cir. 2023), Mr. Lopatka successfully appealed the dismissal of a putative securities class action on repose grounds.  The case, currently pending in the District of Colorado, involves allegations that Defendants misled investors regarding Pilgrim Pride’s operations and finances amid a years-long collusive scheme to fix chicken prices, and is the only one of three securities class actions involving similar claims against poultry producers to still survive.

Mr. Lopatka also dedicates his time to promote best practices in complex litigation. For example, Mr. Lopatka served alongside attorneys representing both plaintiffs and defendants as a project member with the Electronic Discovery Reference Model (EDRM) to identify common problems and solutions (including potential amendments to the Federal Rules of Civil Procedure) related to the process of recording documents withheld from production on a claim that they contain attorney-client communication or work product.

Mr. Lopatka received his J.D. from Tulane University Law School in 2010. During the summer of 2009, he studied international capital markets and securities law at Cambridge University and Queen Mary School of Law in London, England. He received his B.A. with honors in history from Loyola University New Orleans in 2004.


  • Tulane University, 2010, J.D.
  • Loyola University New Orleans, 2004, B.A.

Bar Admissions

  • Louisiana
  • Illinois
  • United States Court of Appeals for the Second Circuit
  • United States Court of Appeals for the Tenth Circuit
  • United States District Court for the District of Colorado

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Kahn Swick & Foti, LLC Privacy Policy

This privacy notice applies to www.ksfcounsel.com and all other websites on the World Wide Web owned or operated by Kahn Swick & Foti. It explains how we collect, use, process and share personal data we collect about you when you visit this website, including in connection with potential or actual representation of you by Kahn Swick & Foti. This notice is in accordance with European Data Protection laws (including the General Data Protection Regulation, effective May 25, 2018, as well as other country-specific laws that may be applicable).

This website is not intended for children and we do not knowingly collect personal data related to children.

What Information Do We Collect About You?

Personal data includes any information about an individual that could be used to identify them.

Kahn Swick & Foti collects, uses, stores and transfers different kinds of personal information about you, such as:

  • “Contact Data” – includes your work address, email address and telephone numbers;
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How Do We Collect Information About You?

We collect information about you in the following ways:

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How Will We Use Information We Collect About You?

We will only use your personal data in ways permitted by law, which may or may not include consent, depending on the type of data obtained. Any information you submit to us may be used to communicate with you regarding the matter or case for which you provided the information, as well as to communicate with you regarding unrelated matters or cases.

We take appropriate security measures to protect against unauthorized access to or unauthorized alteration, disclosure or destruction of data. These include internal reviews of our data collection, storage and processing practices, and security measures, including appropriate encryption and physical security measures to guard against unauthorized access to systems where we store personal data.

In circumstances where you provide us with personal information in connection with a matter in which we are representing you, we may share such information with contractors or agents we employ in the course of our investigations or casework with your consent. In doing so, we restrict access to personal data to firm employees, contractors, and agents who need to know that information to process it on our behalf. These individuals are bound by confidentiality obligations and may be subject to discipline, including termination and criminal prosecution, if they fail to meet these obligations. We may also share the personal information if we have a good faith belief that access, use, preservation, or disclosure of such information is reasonably necessary to satisfy any applicable law, regulation, legal process or enforceable governmental request.


We aim to provide you with choices regarding the use of your data for marketing purposes. We will not use your personal data to send you marketing materials if you have requested not to receive them.

If you do not wish to receive marketing materials and/or would like to request that we stop processing your personal data for marketing purposes, you may submit a request to info@ksfcounsel.com.

Access to Your Information and Correction

EU residents may have certain rights under European data protection law governing the personal data that Kahn Swick & Foti processes, including:

  • the right to be informed;
  • the right of access;
  • the right to rectification;
  • the right to restrict processing;
  • the right to data portability;
  • the right to object; and
  • rights in relation to automated decision making and profiling.

To exercise these rights with respect to any data provided to Kahn Swick & Foti, please contact us. All requests will be dealt with in accordance with the law.

Your California Privacy Rights

California Civil Code §1798.83 permits our clients who are California residents to request certain information regarding our disclosure of personal information to third parties for their direct marketing purposes.


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Data Retention and Storage

All data collected through this website, including data submitted by you, will be stored in the United States. Please note that, should you wish to submit personal data protected under European data protection law (other than for purposes of responding to your inquiry), you should contact us prior to submitting such data to discuss options.

We will only retain your personal data for as long as necessary to satisfy the purpose for which it was collected. Examples include satisfying legal, regulatory, accounting, reporting requirements and/or executing legal work for which we were retained by you. The specific retention period applicable to the type of data obtained will depend upon a variety of factors, including the data type, purpose for which it was obtained, and the nature, volume and sensitivity of the personal data, among others. If you would like to know more about data retention, please contact us.

Changes to Our Privacy Policy

Kahn Swick & Foti reserves the right to change this policy at any time by posting a new privacy policy at this location.

How to Contact Us

If you have questions concerning this Privacy Notice, wish to obtain additional information, or exercise specific data subject rights pursuant to European law (including the General Data Protection Regulation, and other country-specific data protection laws that may apply), please contact us.

Kahn Swick & Foti, LLC Terms & Conditions

The law firm Kahn Swick & Foti, LLC will evaluate your submission. By submitting the form, you acknowledge that this submission is not intended to and will not establish an attorney-client relationship between you and Kahn Swick & Foti, LLC (the “Firm”), and that the submission or receipt of information to the Firm or one of its attorneys via this form, website, e-mail or telephone does not create an attorney-client relationship.

Please note that, should you wish to submit personal data protected under European data protection law (other than for purposes of responding to your inquiry and/or determining class eligibility), you should contact us prior to submitting such data.