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Guardant Health defends patent infringement allegations in DDE over its cancer testing technology

March 2025

Client(s) Guardant Health, Inc.

Jones Day is defending Guardant Health, Inc. ("Guardant") in a patent infringement case brought by Cold Spring Harbor Laboratory ("CSHL") in the District of Delaware relating to the use of DNA sequencing for cancer diagnostic testing. CSHL accuses Guardant's flagship Guardant 360 product of infringing two patents directed to obtaining copy number information.

Cold Spring Harbor Laboratory v. Guardant Health, Inc., No. 1-25-cv-00263 (D. Del.)

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