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Loading … Loading … This story appears in the {{article.article.magazine.pretty_date}} issue of {{article.article.magazine.pubName}}. Subscribe The most lucrative mobile apps have already been built . The odds of developing breakthrough new medicines get tougher Green Rush all the time . But America’s most ingenious minds aren’t backing down. Instead, they are flocking to a new area — marijuana-related technology — where a patent-filing spree is under way. Some 266 marijuana-related patents have been approved in the U.S., and another 255 are pending, according to a new analysis by Envision IP, a Raleigh, N.C., patent-research firm. These filings cover everything from proprietary hybrid strains of cannabis, to “clean and efficient growing systems, software-based analytics and monitoring, and packaging and distributioninfrastructure.” Nearly half that activity has come in the past three years, as the pace of patent-filing activity has more than quadrupled from levels a decade ago. By Envision IP’s tally , nearly 20 companies now hold cannabis-related patents. Among the most active are AbbVie, Jenrin Discovery and Cara Therapeutics.

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