Jonas Hallstein is an associate in the Chicago office of Latham & Watkins and a member of the Litigation & Trial Department.

Jonas represents public and private companies in complex litigation in state and federal courts.

Jonas leverages his acute analytical and technical abilities to guide public and private companies in complex commercial matters, primary in the class and mass action spaces. He also has experience litigating insurance and business-to-business disputes, as well as government enforcement actions.

Jonas maintains an active pro bono practice, representing incarcerated individuals against prisons and personnel for deprivations of their constitutional rights.

Prior to rejoining Latham, Jonas served as a law clerk for Judge Joel M. Flaum of the US Court of Appeals for the Seventh Circuit.

Jonas’s representative experience includes representing:

  • Allergan in alleged product liability litigation in the United States regarding textured breast implants
  • Sandals Resorts International, including a favorable judgment in its defense of a copyright infringement case in which the plaintiff sought hundreds of millions of dollars in damages
  • Public companies, including in life sciences, financial services, and retail industries, as well as their officers and employees, in SEC investigations related to accounting, financial reporting, and internal controls
  • DTE Energy in class action litigation related to flooding in the Detroit metropolitan area
  • A restaurant franchise in obtaining a favorable settlement in a putative class action

Bar Qualification

  • Illinois

Education

  • JD, Columbia Law School, 2022
    James Kent Scholar, Harlan Fiske Stone Scholar, Managing Editor, Columbia Journal of Transnational Law
  • BS in Physics, Michigan State University, 2019

Languages Spoken

  • English