Which trademarks cannot be registered?

By way of example only, we mention some of the exclusions provided for

• coats of arms, signs, emblems, of public interest, unless authorized by the competent authority
• signs likely to deceive the public, as to geographical origin, nature or quality
• portraits of persons without consent, names of persons other than the applicant
• signs identical or similar to an already known sign if it may cause confusion for the public
• signs consisting exclusively of generic designations
• signs consisting exclusively of the shape imposed on the product by nature
• signs that have become commonplace in everyday language or in commercial usages