I am about to apply for a patent.
The invention is an advertising sign. It consists of four components that when assembled, create a frame, in which an advertising media/medium is inserted into.
The joints at which the four components are assembled is unique to my invention although the parts that make up each of the four components are not my invention and are freely available to everyone (they are nothing new, unique or current patents).
The way these components are joined/connected/assembled is my idea, and as far as I know has not been patented. Each component has a groove that facilitates the holding/placing of advertising media/medium, and together with the other four components makes up the system, which is unique.
The way I want to commercially exploit my invention is the complete system. I have no intention of commercially exploiting the joint/connection/assembly of the two/four frame components. Obviously I would love to hold the patent for this particular connection in all applications, in all industries, worldwide, however it is not my primary concern or business to exploit owning the patent for this joint/connection/assembly.
So my question is... Should I patent the joint/connection/assembly of these two/four components, or Should I patent the system of the joint/connection/assembly of these four components with the inserted support for media component, or Should I patent the system of the joint/connection/assembly of these four components with the inserted media/medium for the application of advertising signage only?
Also, if I was to successfully be granted the patent for this joint/connection/assembly or successfully get the patent for the system as a whole, is another person then able to simply alter the dimensions of the product, such as make the groove thinner and insert a thinner advertising board, and therefore not infringe on my specific patent?