A visitor uses his smartphone in front of an advertisement of Samsung Electronics' Galaxy S6 and S6 Edge smartphone at a Samsung Electronics shop in Seoul, South Korea, in 2015. Ahn Young-joon/AP hide caption

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A group of technology and retail groups is beginning a national ad campaign targeting so-called patent trolls. The Internet Association, National Restaurant Association, National Retail Federation and Food Marketing Institute hide caption

toggle caption The Internet Association, National Restaurant Association, National Retail Federation and Food Marketing Institute
Taking The Battle Against Patent Trolls To The Public
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Vernon Hugh Bowman, who took his case to the Supreme Court, lives outside the small town of Sandborn, Ind. Dan Charles/NPR hide caption

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