Trade right

The trade right of the respondent, however, whether with respect to the complete structure or its separate parts, is merely the right to have that which it lawfully produces freely bought and sold without restraint or interference. It is a right which attaches to its product—to a particular thing—as an article of lawful commerce, and it continues only so long as the commodity to which the right applies retains its separate identity. If that commodity is combined with other things in the process of the manufacture of a new commodity, the trade right in the original part as an article of commerce is necessarily gone.