The Denver Metro Chamber of Commerce has sued the Colorado Cannabis Chamber of Commerce for alleged copyright infringement, claiming the pot-business promoter copied its logo.

The Denver chamber is concerned that people might think the cannabis chamber is linked in some way with its organization, according to a lawsuit filed late Thursday in U.S. District Court in Denver.

Or in essence, the Denver chamber — proud of playing a pivotal role in bringing the railroad to town in the late 1890s and Denver International Airport to the area in 1995 — doesn’t wish to be confused with a group promoting marijuana commerce.

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