Changelog
Download the USPTO CPC statistics extract (CSV) , open extract wired into this page's Dataset JSON-LD (CC BY 4.0).
A dated record of data refreshes, corrections, and methodology changes on PlainPatent. We list only real, verifiable changes. See our corrections process if a figure looks wrong, or methodology for how the PatentsView pipeline works.
Public /corrections alias and identity CiteThis blocks
Added a /corrections redirect to the editorial corrections process and Cite this page blocks on identity and legal pages so readers have a stable citation string and a clear path to report data issues.
Noindex /search dropped from sitemap-pages
Removed the noindex,follow /search route from the pages sitemap so the sitemap and robots instructions agree (commit 25b29bf).
Honest per-route sitemap lastmod
Static and related sitemap entries now stamp lastmod from git or data vintage per page instead of a single portal-wide PatentsView fingerprint (commit 65cbf4e).