Praised for its ‘ability to identify the importance of trade secrets’ to minimize harm, Sidley Austin LLP is repeatedly entrusted by global industry leaders with filings under both state and federal law. The team offers end-to-end support with court disputes, guiding clients from pre-litigation negotiations to trial and appeals, including in business-critical lawsuits. A seasoned trio leads the practice– Chicago-based Stephanie Koh, who has litigated a variety of technologies; Jeffrey Kushan, operating out of Washington, DC; and Irene Yang in San Francisco, who leverages extensive trial experience. Sharon Lee in New York is recommended for breach of contract issues and technical expertise. Ching-Lee Fukuda left the firm in 2026.
Legal 500 Editorial commentary
Testimonials
Collated independently by Legal 500 research team.
‘The New York IP group in particular is knowledgeable, efficient, and incredibly diverse. They have prosecuted billion-dollar-plus trade secret cases and successfully defended against the same. They were unafraid of advocating for positions--even against clients--where the other outcomes may be detrimental to the client's case and, where other factors require asserting potentially harmful arguments, the group has quickly pivoted to minimize any harm.'
- 'The group has technical knowledge ranging from technology (medical devices, telecommunications, computer software and hardware) to biology, and showed that they could use this knowledge in other spaces, such as the financial services field. They showed the ability to identify the importance of trade secrets to both our company's profits to identify losses, and to the accused misappropriator's profits to identify disgorgement damages where others were unable to do so.'
- 'When defending against trade secret cases, they can find publicly available information to completely nullify the asserted trade secrets. The associates were also excellent in their roles. ’
Practice head
Stephanie Koh; Jeffrey Kushan; Irene Yang
Other key lawyers
Sharon Lee