Typically a name, word, phase, logo or symbol used to identify a commercial product or service. The trademark owner has exclusive rights to use it. The trademark can be registered (in this case the name is followed by the symbol ®) or unregistered (in this case it is followed by the symbol ™). The trademark must be used in the form with which it has been registered (e.g. Tetra Brik®); no different forms (Tetra Brick), short forms (Brik), simplifications (Tetra), versions without the space separating two words of the name (TetraPak) or with a different use of low and high case letters (Tetra pak) are allowed. The symbols “®” and “™” are typically mentioned when the trademark or name is quoted the first time, and are left out in the next quotations.
