The patent business is one with no downsides for the patent office: They get a fee for granting a patent, they get a fee for renewing a patent every couple year

The patent business is one with no downsides for the patent office: They get a fee for granting a patent, they get a fee for renewing a patent every couple years, they get to fell important when they report to their government how "innovative" the country is through the number of patents granted. If a patent is found to be invalid, it's struck from the records, no penalty to the patent office. If a patent is found to overlap entirely with an earlier patent issued at the same office, it's struck from the records, no penalty to the patent office. So of course they're looking for any loophole they can find to pass more patents. And even if the loopholes turn out to be of the wrong shape, it's not their problem.