It has been, and is, quite frequent practice for a firm, producing goods directed at different national markets, to label them with different trade marks. Sometimes there is no alternative to this practice, as when the trade mark registered in one country cannot be used in other countries. This might arise, for example, when a trade mark consisting of one word has, in the language of other countries, a commercially unacceptable meaning, or when a trade mark used in one country is already in the hands of somebody else in other countries or is susceptible of confusion with a pre-existing trade mark in other countries. Sometimes this practice is only the fruit of specific events, like mergers of previously independent structures. Sometimes the firm intentionally seeks to keep separate markets, so as to exploit the possibility of different prices and thus achieve globally higher profits.