Trade marks

Trade marks are signs used in trade to identify products.Your trade mark is the symbol your customers use to pick you out. It distinguishes you from your competitors. You can protect and build upon your trade mark if you register it.In some countries, you can also get protection even if your trade mark is not registered, as long as it is used. However, you are well advised to register it in order to obtain the best protection.The only condition imposed on a registered trade mark is that it must be clearly defined; otherwise neither you nor your competitors will be certain of what it covers. 

euipo.europa.eu/ohimportal/en/trade-mark-definition