This article aims at providing legal translators with useful information regarding the translation of trade marks documents. First, the reader is provided with a legal background in order to let him/her know the type of documents existing in the registration process of a trade mark, both in Spain and in the United Kingdom, and the context form which these documents emerge; then the linguistic features of these documents are analysed so that the translator gets to know the main challenges he/she has to face when translating trade mark documents. Linguistic characteristics of such documents in European and international settings are also discussed.