Cannabis Lock Box Maker Hits Rival With Knockoff Accusation

The maker of a child-resistant cannabis storage lock box accused a rival packaging company of knocking off its patented design after licensing talks allegedly failed.

Rhode Island-based Contempo Card Co. Inc. accused Superior Bindery Inc. and a Massachusetts chain of medical marijuana dispensaries of making and marketing a lookalike version of Contempo’s patented Vault Box, which is designed to protect children from accessing potentially harmful cannabis products, according to a complaint filed August 29 in the US District Court for the District of Massachusetts.

Contempo said Superior expressed “interest in the Vault Box’s innovative design” beginning in late 2018, after ...