The Supreme Court struck down on Thursday a state law that prohibits the use of prescription drug records for marketing, in a case pitting free-speech rights against medical privacy concerns.

The high court handed a victory to data mining companies IMS Health, Verispan and Source Healthcare Analytics, a unit of Dutch publisher Wolters Kluwer, that collect and sell such information and that challenged the law.

(Reporting by James Vicini, editing by Gerald E. McCormick)

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