Common Law vs. Registered Trademarks
Common Law Trademarks
Under common law, some rights to a mark can be established by the first person to use a specific mark in a commercial setting. These rights are very limited and difficult to enforce, which is why a registering a trademark is significantly beneficial.
Registered Trademarks
Registration of a trademark affords additional protections that common law rights do not provide. See our previous post on the Benefits of Trademark Registration.