To your knowledge is there a precedent in patent law for the argument that since I am an expert keymaker, and I could make only one type of key to fit that lock, no one else could make another?
No.
Nor will any attorney in his right mind make that his argument.
My attempt was to illustrate how MNTA can believe they have a blocking/infringed patent. But that is not how an attorney would go about proving infringement.
ij
It is astonishing what foolish things one can temporarily believe if one thinks too long alone ... where it is often impossible to bring one's ideas to a conclusive test either formal or experimental. J.M. Keynes