Trademark searches may be conducted through online databases
(though few countries currently offer such services), specialized firms, or at
the national trademark registry. It is important to bear in mind that, while
trademarks which are identical to your own mark can be easily identified,
confusingly similar trademarks that conflict with your own will be more
difficult to spot.
Depending on the merits of the case, it may be advisable to
use the services of a competent trademark agent or attorney for a trademark
search for your SME.