Sorry - I think what I’m trying to say is that Lexmark, Brother, HP, whatever - should all get in a room and agree to a form factor, and not bother patenting this.
They can then open up the market for inkjet and laser refills to whomever meets the standard. Like 8X11 paper.
I realize this is a revenue source but it’s also a royal pain in the ass for both producers and consumers to deal with.
Of course - the real answer is to obviate the need to print at all, thus relegating this (archaic) practice to the dustbin of technology history - joining the typewriter and hopefully fax machine.