It's called "trade dress." You absolutely are allowed, and this is probably a good thing. In the case of a durable tool, like a multimeter, the industrial desi

It's called "trade dress." You absolutely are allowed, and this is probably a good thing. In the case of a durable tool, like a multimeter, the industrial design serves the same purpose packaging does for normal consumer goods. Let me turn the question around: "Should you really be allowed to trademark your packaging?"