Chassica Soo focuses her practice on a variety of complex litigation matters, with an emphasis on class actions, false advertising, and appellate litigation.

Prior to joining Squire Patton Boggs, Chassica was a Fellow in the Appeals, Writs, and Trials Section of the California Department of Justice. During her fellowship, Chassica handled more than 30 appeals in the Second Appellate District of the California Court of Appeal.

Chassica has also served as a judicial intern for The Honorable Eric C. Taylor, of the Superior Court of Los Angeles County.

Award Mouse thought multimedia interface book medal screen monitor
  • Obtaining for a multinational maker of probiotic drinks the denial of class certification to a putative federal class action alleging false advertising of the health benefits of consuming the company’s beverages. After the plaintiff voluntarily dismissed the case in order to appeal this denial of class certification, we persuaded the Ninth Circuit to dismiss the appeal.
  • Resolving by amicable settlement a putative federal class action brought by prison inmates and a criminal defense lawyer against a prison telephone service provider accused of recording privileged calls and falsely advertising the privacy of those calls. This result followed the Ninth Circuit’s grant of our Rule 23 petition for review of the trial court’s order granting a renewed motion for class certification.
  • Obtaining a reversal from Ohio’s First District Court of Appeals of a $28 million jury verdict.
  • Obtaining an affirmance by the California Court of Appeal of summary judgment for the owner of property adjacent to a US EPA Superfund site in response to charges that contamination had migrated to the site causing injuries to workers there.


  • University of Virginia, J.D., the Virginia Tax Review, 2012
  • University of Southern California, B.A., magna cum laude, Phi Beta Kappa, 2008


  • California, 2012

Memberships & Affiliations

  • Member of the Southern California Chinese Lawyers Association
  • Member of the Asian Pacific American Women Lawyers Alliance


  • English
  • Conversational Mandarin

  • Named a Southern California Rising Star, a distinction that honors the top 2.5 percent of lawyers age 40 or under, or who have been in practice for less than 10 years

Award Mouse thought multimedia interface book medal screen monitor