The most lucrative mobile apps have already been built. The odds of developing breakthrough new medicines get tougher 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.