They do look at prior art but remember they only have basically a "google search" type of tool so often find so-called duplicates that are not (because they hav

They do look at prior art but remember they only have basically a "google search" type of tool so often find so-called duplicates that are not (because they have the same words in the title maybe) and miss ones that are the same because they are called something else. Just a very poor system for the money it costs and the potential outcomes to businesses who can literally go bust over a wrong decision.