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Stephanie C. Cheng
Associate
Litigation
Los Angeles
stephanie.cheng@wsgr.com

D323-210-2907

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Stephanie C. Cheng is an associate at Wilson Sonsini Goodrich & Rosati, where she specializes in trade secret and IP litigation.

Stephanie represents companies ranging from start-ups to industry leaders, as well as nonprofit institutions, in complex litigation related to patent, trade secret, copyright, unfair competition, contract, securities fraud, privacy, and other IP and commercial litigation matters.  Stephanie has significant experience in all aspects of litigation, ranging from pre-litigation counseling through trial. 

Stephanie is actively involved in pro bono work and is on the firm’s pro bono committee. In her pro bono practice, Stephanie has worked on impact litigation with the ACLU of Louisiana and the ACLU of Washington, represented clients in probate guardianship and immigration proceedings, and worked with non-profits to protect the right to vote.

Experience

Stephanie C. Cheng is an associate at Wilson Sonsini Goodrich & Rosati, where she specializes in trade secret and IP litigation.

Stephanie represents companies ranging from start-ups to industry leaders, as well as nonprofit institutions, in complex litigation related to patent, trade secret, copyright, unfair competition, contract, securities fraud, privacy, and other IP and commercial litigation matters.  Stephanie has significant experience in all aspects of litigation, ranging from pre-litigation counseling through trial. 

Stephanie is actively involved in pro bono work and is on the firm’s pro bono committee. In her pro bono practice, Stephanie has worked on impact litigation with the ACLU of Louisiana and the ACLU of Washington, represented clients in probate guardianship and immigration proceedings, and worked with non-profits to protect the right to vote.

Education
  • J.D., UC Berkeley School of Law, 2017Member Relations Editor, Berkeley Law and Technology Journal; Co-President, Women of Berkeley Law
  • B.S., Chemistry, University of California, Irvine, 2014Cum Laude, Campuswide Honors Program
Admissions
  • State Bar of California
Credentials
Education
  • J.D., UC Berkeley School of Law, 2017Member Relations Editor, Berkeley Law and Technology Journal; Co-President, Women of Berkeley Law
  • B.S., Chemistry, University of California, Irvine, 2014Cum Laude, Campuswide Honors Program
Admissions
  • State Bar of California

Select Publications

  • Co-author, "District Court Finds SoundExchange Lacks Standing to Sue for Unpaid Royalties," Wilson Sonsini Alert, August 25, 2025
Insights

Select Publications

  • Co-author, "District Court Finds SoundExchange Lacks Standing to Sue for Unpaid Royalties," Wilson Sonsini Alert, August 25, 2025
Focus Areas
  • Internet Strategy and Litigation
  • Litigation
  • Patent Litigation
  • Trade Secret Litigation
  • Trademark and Copyright Litigation
Recent Insights
Alerts
District Court Finds SoundExchange Lacks Standing to Sue for Unpaid Royalties
On August 7, 2025, a federal district court dismissed the complaint in a lawsuit brought by SoundExchange, Inc., an independent nonprofit representing owners of copyrighted sound recordings that sought underpaid royalties from satellite and internet radio company Sirius XM.1 The court held that the Copyright Act did not confer a private right of action upon SoundExchange to sue, despite its responsibility under the statute for administering the Act's licensing and royalty components.
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Client Highlights
Wilson Sonsini Secures Jury Trial Victory for Google in Case Alleging Misuse of Advertising Technology
On June 10, 2025, Wilson Sonsini secured a complete defense verdict from a Los Angeles jury in ReactX LLC v. Google LLC.  ReactX sought $1.3 billion in damages, alleging that Google breached a series of contracts by misusing ReactX’s confidential technology to build two of Google’s most successful digital advertising products. ReactX originally brought the case as one for trade secret misappropriation, but just two weeks before trial, it voluntarily dismissed its trade secret cause of action. The court further trimmed ReactX’s lawsuit in response to nonsuit motions brought by Wilson Sonsini, ruling that Google was bound by only one of the contracts asserted by ReactX and dismissing ReactX’s cause of action for breach of the implied covenant of good faith and fair dealing. After a six-week trial featuring 17 witnesses, the jury completely vindicated Google on ReactX’s remaining cause of action for breach of contract.

The Wilson Sonsini team representing Google in the matter was led by partners Colleen Bal, John Flynn, Tait Graves, Josh Baskin, and Lucy Yen, and included Andrew Alderette, Stephanie Cheng, Kayla Dessel, Katherine Ericson, Celine Liu, Sachli Nayeri, Courtney Reed, Matt Donohue, Doug Brockmeier, Sissel Browder, Shannon Hill, and Pamela Sandillo.
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