Symantec has filed a second patent infringement lawsuit against Zscaler, in the U.S. Federal District Court for the District of Delaware. Symantec previously filed a separate patent infringement complaint against Zscaler on December last year.

The new lawsuit asserts that Zscaler has been using Symantec’s patented technology relating to 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 pre-date the formation of Zscaler and include six patents that were obtained through Symantec’s acquisition of Blue Coat Systems. The 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.

[Image courtesy: Symantec]