In law, a trademark is a form of property and trademark infringement
and it is a violation of your proprietary rights.
It is easier to prevent unauthorized use of a registered trademark, than to prove ownership of a mark purely based on use (common law).
Whilst it is common to prevent use in related or similar fields, if the mark is strong enough, it may be possible to prevent its use in all fields.
For example, a unique trademark such as KODAK® will have protection not only in the photographic field, but also in relation to cars, computers, make-up etc.
It therefore follows that choosing and registering a strong trademark will offer the best protection against trademark infringement.
TM infringement can happen in many ways:
It is up to the trademark owner to be aware of infringement. Your country's Trademark Office may reject outright the application for a similar mark.
However, the owner of a trademark should regularly scan published Trade Mark Journals or Gazettes and oppose applications that may infringe upon their marks.
Links to many other Trademark resources can be found on our Intellectual Property page.
Although you may not want to register your trademark in other countries through these organizations, you may want to prevent someone else from using this route to register a similar mark, which may then be valid in your country.
Once you've become aware of someone else using your mark, you must take prompt action. Notify them of your rights and demand that they stop (cease and desist) using your mark.
Left unattended, they may acquire rights based on use and your right to object could become waived.
If the infringement continues, you have to take legal action. The various Trademark Offices do not enforce trademark rights, but you could file complaints with your High Court, or if applicable, a consumer protection agency.
Trademark law firms are best equipped to assist with the management of your trademarks. They have systems in place to not only conduct searches, but also to monitor trademark infringement, competitor activity and to advise on trademark litigation in case of infringement.