Marketing Biz Hits Yelp, Groupon With More Patent Suits

Law360, New York (May 7, 2013, 12:23 PM EDT) -- Within hours of the issuance of its latest patent, digital marketing company Blue Calypso Inc. fired off another round of infringement lawsuits in Texas federal court Monday against Yelp Inc., Groupon Inc. and Four Square Labs Inc.

Blue Calypso, which offers social media marketing and advertising services to corporate clients, had already sued the three social media giants last year over two other patents, accusing them of stealing its proprietary system of peer-to-peer mobile advertising.

A Dallas-based company, Blue Calypso says it works with companies and...
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