Probably best to not release the chair, as this is happening right now: http://www.protectingdesigns.com/bmw-group-files-suit-against-turbosquid
Im in the 3d industry, and this could open a whole can of legal worms. We have always been under the impression that most companies are fine as long as their product isnt shown in a bad light. Although, some larger companies have us remove any identifying marks (apple logo on computers) but you still know exactly what it is.