Digital Media Cos. Spar Over Underground Ad Patent

Law360, New York (November 30, 2012, 1:38 PM EST) -- An advertising company bidding to install light-emitting diode advertisements in New York City subway tunnels asked a New York federal judge on Wednesday to invalidate a rival's patent for the advertising technology.

New York-based Digital Underground Media Inc. claims its London-based rival Spectrum Motion Media Ltd. has stifled its proposals to install the tunnel advertisements in London and Los Angeles and says a potential advertising contract with New York's Metropolitan Transit Authority is in danger due to the continued threats.

"The Spectrum defendants' repeated disruptive allegations,...
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