Copyright and patents are absolutely not the same thing at all.
A patent makes it illegal to use a particular idea, by any means. It is a limited-time universal monopoly on a set of specific "claims" (the selected applications of the idea). It has nothing to do with whether someone copied you or not.
A copyright is a prohibition on someone copying you, with certain exceptions where they are allowed to do so ("fair use" or "fair dealing"). Copyrights also, in the USA, bring certain protections against people attempting to use a work in a way you did not intend even where they are not duplicating it.
A trademark is a prohibition on someone causing confusion by copying something you use to identify yourself, or by using/referencing it (without copying) in a context you don't wish.
A trade secret is a criminal prohibition on someone intentionally causing another to divulge certain information that you contractually banned them from divulging.
A security classification is a ban on certain ideas/information being shared with parties that a government agency did not wish them shared with, or used in certain contexts. This is not a protection available to individuals, only to governments.
A license is an intentional weakening of one or more of the above types of protection, potentially with attached civil penalties in the event the bounds of the license are exceeded. It can thus, when accepted, limit behaviour beyond what would normally be allowed by one of the IP types above.
All six of these IP types protect against Person B doing something that is in some way related to an activity Person A did earlier, but they are really quite different in what they cover and how. I don't agree at all they're the same thing.