Michigan continues to wrestle with how to regulate and license medical marijuana dispensaries.

But there’s a potentially bigger issue facing the budding cannabis industry: the prospect that someone is trying to build a national monopoly on legal weed.

As reporter Amanda Chicago Lewis writes in her story for GQ, there are some powerful people trying to turn their company into the “Monsanto of marijuana.”

“Biotech Institute is a company that has really no assets other than these very broad patents on the cannabis plant,” said Lewis.

One marijuana geneticist estimated that the company’s patents cover “one-half to two-thirds of the strains currently on the market.”