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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

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The Internet Association, National Restaurant Association, National Retail Federation and Food Marketing Institute

A bigger facial recognition database could allow Facebook to collect more data about whom we are interacting with in the real world. Dado Ruvic/Reuters/Landov hide caption

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Dado Ruvic/Reuters/Landov

"I bought the stuff at full retail. I own it," says Michael Hallatt, owner of the _irate Joe's grocery in Vancouver. His store faces a lawsuit from Trader Joe's for infringing on its trademark and possibly confusing customers. _irate Joe's hide caption

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_irate Joe's

Barry Nalebuff (left) and Seth Goldman cofounded Honest Tea in 1997. Goldman is the company's TeaEO. Nalebuff is a professor at Yale School of Management. Crown Business hide caption

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Crown Business

Pregnant doctors are less likely than other women to deliver their babies via C-section, recent research suggests. Economists say that may be because the physician patients feel more empowered to question the obstetrician. iStockphoto.com hide caption

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iStockphoto.com