Used largely by companies in German-speaking countries where AG has a special meaning in company names, though use in Germany is restricted by court order. Names can be registered directly at the second level; third-level registrations are also available under some second-level labels.

Trademarks are assigned through the Antigua and Barbuda Intellectual Property & Commerce Office (ABIPCO). Antigua is a member of the Madrid Protocol. A trademark is valid for 10 years and may be renewed for further periods of 10 years each.