Judge Rules Arista Infringes Two Cisco Ethernet Patents

Arista Networks Inc. used rival Cisco Systems Inc.'s network device technology in its ethernet switches without permission, a U.S. trade judge ruled, handing Cisco yet another win in a sprawling legal battle over patents between the two companies. The judge, MaryJoan McNamara of the U.S. International Trade Commission in Washington, said that Arista had infringed two patents owned by Cisco.