It looks like there is an issue with how PatentsView handles quotation marks. For example, whenever a quotation mark occurs in the patent's title, PatentsView quotes the entire title and adds extra quotation marks around the actual quoted text. You can see this behavior in patent number 5767337:
library(patentsview)
title <- search_pv(
query = '{"_eq":{"patent_number":"5767337"}}'
)$data$patents$patent_title
cat(title)
#> "Creation of human apolipoprotein E isoform specific transgenic mice in apolipoprotein deficient ""knockout"" mice"The same behavior is seen in the bulk data files.
It looks like there is an issue with how PatentsView handles quotation marks. For example, whenever a quotation mark occurs in the patent's title, PatentsView quotes the entire title and adds extra quotation marks around the actual quoted text. You can see this behavior in patent number 5767337:
The same behavior is seen in the bulk data files.