I do not agree that trademark rights vests as soon as a logo is created.
Since a registered trademark almost always will increase the value of the business and the price that people are willing to pay for the goods/services, there are very very few reasons not to register the trademark.
James Lindon, Ph.D. Patent Attorney
Lindon & Lindon, LLC
Patents, Trademarks, Copyrights, Pharmacy Law, Litigation
[this is not legal advice - provided for discussion only]
Intellectual Property for the Individual and Small Business: Identify, Protect, Enforce, Defend.
"Fools rush in where angels fear to tread."