ClicktoOrder, debtcollector is right that you will want to go over all of your business plans with a professional prior to implementing these plans. You do not want to invest a lot of time, energy and money into your enterprise only to be sent cease and desist letters or be sued for infringement. An attorney can help your new business avoid legal pitfalls.
The NFL is very diligent when it comes to seeking out infringers on their trademarks. Trademark rights can cover not only the names and logos of an entity, but also slogans, colors, styles of print, phrases, graphics, symbols, and anything else that is used to identify and promote a business, its products or its services.
The Green Bay Packers have registered trademarks on "Green Bay Packers," "Packers," "Lambeau Field," "Titletown," the "G" logo, the colors dark green, gold and white.....any use of these trademarks alone or in any combination can result in an infringement notice and the potential of being sued. You would need to license the rights to use these trademarks from the Packers organization.
You can use the words "Green Bay," but you cannot use the name Green Bay with the Packers' trademarked colors. You can use the letter "G," but not with a similar print or in a way that suggests sponsorship or endorsement by the Green Bay Packers organization. You cannot use the name Packers or Lambeau Field or Titletown on a product without a license to do so.
This is why you need to consult with a professional. You cannot (generally) base a business on another's successful product or service line without the very great risk of being sued. To get a clearer picture of the lines you cannot cross with your products, you will need to have your business plans personally reviewed by an attorney in your area.
Good luck with your business.
