USPTO approves too many junk patents. See *****
The website has some seriously outdated search system, oddly the response headers say Apache yet the URL has a .exe in it. Maybe Apache is being used to reverse-proxy to sole very old system.
It requires you to click a Logout button when done searching, and cannot be searched from public search engines like Google, or give permalinks to trademark records.
Overall good, but the site search results are a mess, and is there some reason why individual sections of the MPEP link back to the main MPEP table of contents but not MPEP chapter tables of contents?