Arista Rises as Agency Agrees to Review Two Cisco Patents
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Arista Networks Inc. rose the most since July after the U.S. Patent and Trademark Office on Tuesday agreed to consider the validity of two patents on router technology owned by arch rival Cisco Systems Inc.
Cisco sued last year seeking cash compensation for claims Arista built its business on stolen technology, while also asking a trade agency to block U.S. imports of Arista products. In retaliation, Arista asked the patent office to invalidate some of Cisco’s patents, saying the technologies aren’t new inventions.