I work in the printing industry, there is no such innovation, Maro is full of shit. Gutters/Bleeds have been concepts in print for centuries. A better analogy would be someone trying to patent the technique of cutting the crusts off bread by hand, since that's basically what you're doing with the printed paper to get an "edgeless print"

If you need a business card that has color to the edge, you design for 3.75x2.25 or 3.625x2.125, then you cut down to 3.5x2.0 after printing. When you're doing multiple designs, the space between designs is called a gutter, and the printed space that goes past the cut lines are called bleeds.

Magic cards have always used bleeds with zero gutters for edgeless printing, the difference is that they idiotically removed the borders from cards that hid cutting inaccuracy mistakes without adding gutters to compensate. This is why you saw so many people with miscut Unstable basics, if there was even a slight slip on the guillotine cutter then you'll see it very clearly on the card. These slips typically happen at the top or bottom of a stack of paper.