Agree entirely. I know someone who milked an obvious patent for the best part of 40 years and made a killing on it. People were paid to get the patent reissued

Agree entirely. I know someone who milked an obvious patent for the best part of 40 years and made a killing on it. People were paid to get the patent reissued and to chase down manufacturers for pay offs. The patent (wait for it) was: "the use of printed circuit boards in television sets". Fortunately it was allowed to expire about 8 years ago when one of the manufacturers assembled a large legal team to claim prior art.