ALEXANDRIA, VA--(Marketwired - May 6, 2013) - Marathon Patent Group, Inc. (OTCBB: [ MARA ]) ("Marathon"), an intellectual property services and patent licensing company, announced today that its subsidiary Relay IP ("Relay") has filed patent infringement lawsuits in the United States District Court for the District of Delaware against Sprint Nextel Corporation, Juniper Networks, Cisco Systems, Bloomberg L.P., Hitachi Cable America, D-Link Corporation, Avaya, Hewlett-Packard Company, Enterasys Networks, Extreme Networks, TIBCO Software, BT Group, SAVVIS Inc., Zhone Technologies, Huawei Technologies, Allied Telesis, and Adtran (the "Defendants").

Relay is asserting infringement related to U.S. Patent number 5,331,637, entitled MulticastRouting Using Core Based Trees. The lawsuit alleges that the Defendants have infringed, and continue to infringe, the claims of the patent in suit by using the accused IP Multicast systems and methods covered by the claims of the Relay patent.

About Marathon Patent Group
Marathon Patent Group ("Marathon") is an intellectual property services and patent licensing company that serves a wide range of patent holders and technologies from Fortune 500 to independent inventors. Marathon provides its clients advice and services that enable them to realize financial and strategic return on their intellectual property rights. Marathon serves clients through two complementary business units: IP Services, which devises strategies that allow our clients to maximize the value of their intellectual property assets, and IP Licensing, which acquires patent assets, partners with patent holders, and monetizes patent portfolios through actively managed patent licensing campaigns. Marathon is based in Alexandria, Virginia. [ www.marathonpg.com ]

Forward Looking Statements
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