Colorado-based Pure Hemp Collective promotes its Vina Bell line of tinctures, salves, topicals and bath soaks as plant-based, inspired-by-grandma’s-garden remedies to “heal what ails ‘ya.”

Notwithstanding all the folksy charm surrounding its marketing, the cannabis extract-containing products—specifically a 5,000-milligram tincture—are at the heart of a modern-day, potentially big-dollar patent fight that has the marijuana IP bar watching.