Whether or not a patent is issued erroneously, it's contents may be discussed without infringment.
Copyright covers patterns and style. If you cannot use the idea profitably without copying board art, schematic sections, magnetic core and winding structures, physical layout, and package shape, then you don't understand the techniques and issues involved sufficiently to avoid copyright infringement.
Explain your issue please. When I offer a suggestion professionally, I will explain why it might work (and to what degree), when it last did work and where, as well as where the first instance of where it was used, to my knowledge. If anyone asks me about a certain feature of a design, I'm prepared to do the same. If there is greater interest or a disputation as to source, further information and supporting documentation may be required.
The pros and cons of specific embodiments are the normal fodder of a design review.
Although there no obligation to do so on usenet, most posters will respond to really interested parties with similar information.
Is this more understandable?
Explain please.
RL