Quinn emanuel trial lawyers

Cassidy, Kate E.

Kate E. Cassidy

Of Counsel


Kate Cassidy focuses on patent-infringement litigation for companies ranging from startups through Fortune 100 companies.  Matters involved a variety of complex technologies, including enterprise software, pharmaceutical formulations, medical devices, polymers, telecommunications, and Internet infrastructure.   Ms. Cassidy’s practice also involves other IP cases, including trademark, trade-secret, trade-dress, as well as breach of contract disputes.  She has litigated in jurisdictions throughout the country, including in the Eastern District of Texas, the District of Delaware, the Northern and Central Districts of California, and the Southern District of New York.  Ms. Cassidy has also successfully represented clients in international and domestic arbitration.


  • Georgetown University Law Center 
    (L.L.M., International Legal Studies, with distinction, 2005)

  • University of Adelaide Law School
    (L.L.B., with honors, 2003)

  • University of Adelaide School of Molecular and Life Sciences
    (B.S., Biochemistry, Microbiology, Immunology, 2001)


The State Bar of New York; United States District Court: Southern District of New York, Eastern District of New York