Roxana Guidero


Roxana (Roxy) Guidero is Counsel at Wilkinson Stekloff.  She has represented corporate clients and individuals in an array of industries and specialties, including entertainment & media, sports, antitrust & competition, product liability, and white-collar crime. With a wide breadth of experience across the spectrum of trial strategy and preparation, Roxy has helped her clients navigate some of their most challenging and complex legal issues in courts from coast to coast, and provided strategic counseling to international clients.

Committed to equal justice and legal access for all, Roxy maintains an active pro bono practice. She has partnered with the Los Angeles Center for Law & Justice (LACLJ) to represent domestic violence survivors; the Animal Legal Defense Fund to protect the lives and advance the interests of animals through the legal system; and the Giffords Law Center to Prevent Gun Violence on gun safety research and advocacy. Roxy received LACLJ’s Pro Bono Partner of the Year award, following her work as lead trial counsel for a domestic violence survivor. She also served as a pro bono prosecutor with the Redondo Beach City Attorney’s Office, successfully trying multiple jury trials.

Roxy is a Lecturer in Law at the University of Southern California (USC) Gould School of Law, teaching courses on Contracts and Antitrust.

Prior to re-joining the firm, Roxy practiced law at O’Melveny & Myers LLP.  She was also a judicial clerk on the United States Court of Appeals for the Ninth Circuit.


  • Undergraduate: University of California, Los Angeles, B.A., cum laude
  • Law: University of California, Berkeley School of Law, J.D., Order of the Coif
  • Harvard Law School, Visiting J.D. Scholar


  • Judge Alex Kozinski, U.S. Court of Appeals for the Ninth Circuit (2016–2017)

Notable Matters

  • Member of the WS legal team representing the National Football League (NFL) and its 32 member clubs in an ongoing national antitrust MDL lawsuit in the Central District of California brought by putative class members challenging the League’s broadcast arrangements for its Sunday Ticket Package.
  • Represented pop-music star Kesha against defamation and breach of contract claims in New York state court.
  • Represented one of the largest multi-national insurers and managed the trial team in copyright-infringement jury trial in the District of Minnesota, including successfully defending against a $21 billion disgorgement claim.
  • Represented Klarna Inc. in consumer-fraud litigation relating to Klarna’s point-of-sale financing service in the District of Connecticut and before the Second Circuit Court of Appeals, including a successful appeal on a motion to compel arbitration.
  • Represented Penguin Random House against the Department of Justice’s challenge to the multi-billion-dollar merger of Penguin Random House and Simon & Schuster in a nationally reported, three-week bench trial in the District of Columbia.
  • Member of the WS trial team for the lead defendant, a former pharmaceutical executive, in a nationally reported RICO prosecution involving an opioid pain medicine. Representation included a four-month jury trial in the District of Massachusetts as well as post-trial briefing, where Roxy was part of a small team that persuaded the trial court to throw out the lead charges in the case and to reject over $300 million in financial penalties sought by the government.
  • Member of the WS legal team for the National Basketball Players Association in breach of contract dispute in California state court.