Enforcing Trademarks

The burden of enforcing trademark rights is on the trademark owner to identify any infringement and decide what measures should be taken.  

Use of a mark that creates a likelihood of confusion among the relevant public as to the source of goods and services bearing the mark constitutes infringement.  If faced with infringement of your mark, begin by sending a cease and desist letter to the alleged infringer informing them of the possible existence of a conflict.  A cease and desist letter identifies the nature of the infringement and demands that the infringement stop immediately.  If the demand letter does not produce any results, then you may need to file a lawsuit.  Lawsuits can be expensive and hiring an experienced trademark attorney is recommended.   
While registering your trademark has significant benefits, failing to monitor potential misuse of your mark can weaken or lose exclusive trademark rights. To determine the best course of action to protect your mark, seek expert legal counsel.