Paul Weiss

1285 Avenue of the Americas
New York, NY 10019-6064
212-373-3211 (direct)
212-492-0211 (direct fax)
212-373-3000 (firm)
212-757-3990 (firm fax)

A Partner in the Litigation Department, Jaren Janghorbani focuses her practice on general litigation matters. She has tried multiple multi-billion dollar cases, including successfully defending Citigroup in New Jersey state court against claims arising out of the collapse of Parmalat, defeating claims worth more than $10 billion and achieving a $364 million counterclaim jury verdict for Citigroup— the largest defense verdict of the year and the largest defense side verdict in the history of New Jersey. Most recently, Jaren spent six months as a member of the litigation team representing ExxonMobil in an eight-month bench trial where the State of New Jersey sought a precedent-setting $9 billion in damages for environmental injuries, making it one of the largest environmental damage cases ever tried. The case is currently under submission.

In addition to her trial work, Jaren has worked on a broad variety of commercial, criminal and regulatory matters. She has participated in the defense of multiple securities class actions and responded to inquiries from various regulatory agencies, including the DOJ, SEC and FINRA. Jaren has also been involved in the representations of several individuals facing civil and criminal proceedings. She has extensive experience with dispositive motion and appellate practice, in various state and federal jurisdictions including the United States Supreme Court.

Jaren was a key member of the Paul, Weiss litigation team representing Edie Windsor, pro bono, through all of the stages in the successful challenge to the federal Defense of Marriage Act (DOMA) that resulted in a victory when the Supreme Court struck down DOMA as unconstitutional in United States v. Windsor. Jaren represented two families in the state of Mississippi, seeking to have that state’s discriminatory marriage laws invalidated. In addition to her work on marriage equality, Jaren maintains an active pro bono practice, which includes the representation of an individual incarcerated on Alabama’s death row, among other criminal habeas petitions.

Jaren was a Hamilton Fellow and Kent Scholar at Columbia Law School, where she was also Essay and Review editor for the Columbia Law Review. Following her clerkships, she did a semester-long post-doctoral fellowship at Columbia Law School, focusing on federal jurisdiction and sentencing issues.



  • J.D., Columbia Law School
  • B.A., Columbia College


  • Hon. Stephen Breyer, U.S. Supreme Court
  • Hon. Kimba M. Wood, U.S. District Court, Southern District of New York
  • Hon. Dennis Jacobs, U.S. Court of Appeals, 2nd Circuit

Bar Admissions

  • New York

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