12 November 2018Patents

Arista v Cisco: Fed Circuit says no assignor estoppel at PTAB

The US Court of Appeals for the Federal Circuit has ruled that assignor estoppel does not exist in the context of validity proceedings at the Patent Trial and Appeal Board (PTAB), in a long-running dispute between Arista Networks and Cisco Systems.

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Arista v Cisco: Fed Circuit says no assignor estoppel at PTAB

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