Symantec Corp. today announced that it has filed a second
patent infringement lawsuit against Zscaler, Inc. in the U.S. Federal
District Court for the District of Delaware. Symantec previously filed a
separate patent infringement complaint against Zscaler on December 12,
The lawsuit filed today asserts that Zscaler has been illegally using
Symantec's patented technology relating to a variety of network security
technologies, including web security, security scanning, data loss
prevention, intrusion prevention and intrusion signature analysis. The
seven patents asserted in the lawsuit filed today pre-date the formation
of Zscaler and include six patents that were obtained through Symantec's
acquisition of web security market leader Blue Coat Systems. This
lawsuit is based on U.S. Patent Nos. 6,285,658; 7,360,249; 7,587,488;
8,316,429; 8,316,446; 8,402,540; and 9,525,696.
"We are taking this additional action because we believe that Zscaler is
continuing to infringe the intellectual property of Symantec and Blue
Coat," said Scott Taylor, Symantec's Executive Vice President, General
Counsel and Secretary. "Symantec has a responsibility to its
shareholders and customers to protect the Company's investments in
innovative technologies. Symantec will continue to vigorously defend its
valuable portfolio of patents and other intellectual property assets."
Symantec noted that it is continuing to investigate this matter and will
file further claims if additional infringements are identified.