Darren E. Donnelly

Partner, Litigation  

Mountain View 650.335.7685


Darren Donnelly emphasizes data management, technical computing, telecommunications, and Internet technologies in his practice.

Follow Darren’s commentary on IPR and related issues on Between the Parties Blog​.

In addition to preparing and prosecuting patent applications in the U.S. and abroad, Darren has counseled companies on patent portfolio development and management, patent licensing strategies and patent enforcement strategies.

Darren served as trial counsel for in Cordance Corp. v., winning a defense verdict before a Delaware jury that found two of three patents not infringed and the one remaining patent invalid.

Darren served as trial counsel for Informatica in Informatica Corp. v. Business Objects, winning a $25 million jury award in its patent suit against Business Objects.

Darren represented Cryptography Research, Inc. (“CRI”) in Cryptography Research v. VISA, a watershed case for the secure smart card industry, where CRI asserted eight fundamental patents covering differential power analysis countermeasure against Visa International. VISA settled on terms very favorable to CRI.

Darren represented Netflix in Lycos v. Netflix et al. where, after transferring the case from a “rocket docket” to a more favorable venue, he convinced the court to stage the case to allow accelerated — and ultimately successful — summary judgment of non-infringement with minimal discovery. Darren has subsequently represented Netflix in other several other matters all to favorable resolution.

For over a decade, Darren has represented and its affiliates in several patent infringement cases, including against, where he helped enforce via preliminary injunction,’s 1-click® patent.