"High patent grant rate" fable resurrected
Timothy B. Lee [ firstname.lastname@example.org ] resurrects the old Cecil Quillen "high grant rate" saga in a post Study suggests patent office lowered standards to cope with backlog.
Going back to the past, see for example 4 CHI.-KENT J. INTELL. PROP. 186 and Patent Grant Rates"
Also, Patent Quality Myth
Patent Grant Rate Lower Than Many Academics Think