Ramey LLP's client Arena IP LLC sues AT&T Inc, Cisco Systems Inc, Ericsson Inc over U.S. Patent No. 8,320,820 in WDTX.  The technology of the patent(s)-in suit generally covers Self-Contained Data Communication System Nodes As Stand-Alone Pods Or Embedded In Concrete Walkways And In Walls At Public Venues Including Sports and Entertainment Venues.

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