The law on the Internet and intellectual property is constantly evolving with US policy leading the development of e-business laws. Translated, this means that the proposed trademark may not be merely the domain name address used to access a web site. A similar test will also be applied in Canada. If your domain name is used in connection with goods or services so as to distinguish those goods or services from someone else's, you should consider registering your domain name as a trade-mark.
Registration helps deter potential infringers.
It assists you in avoiding infringing other peoples' rights as the process of registration includes a check for similar trademarks. Once you are registered, if anyone challenges your right to the trademark, the onus will be on the challenger to prove infringement, which enables you to more easily protect your trademark against someone claiming infringement. By registering in Canada, you obtain protection in Canada for a renewable 15-year period. By registering in the US you obtain protection in the US for a renewable 10-year period. Average time is twelve months.