A warning for those who remove dates from their content and care about invalidating bad patents and rejecting bad patent applications: If there's no date, likel

A warning for those who remove dates from their content and care about invalidating bad patents and rejecting bad patent applications: If there's no date, likely a patent examiner can't use it as prior art. I used to work as a patent examiner and I was disappointed when I found web content describing an element of a patent application I was working on, but there was no date that could be used to be certain the document was available before the priority date of the application. You can use the Wayback Machine and similar archivers to get a date, but frequently the archivers didn't capture the page or didn't capture it in time in my experience (even if it likely was published in time, I can't establish that legally). Before I quit, I spent some time saving a ton of webpages in one of the areas I was working on (water heaters) just because I wasn't sure how long I'd be at the USPTO and I could be certain of the date given that I myself archived the documents. It was a long-term investment, but could have been quite useful if (for example) a company tries to patent something they previously sold a long time ago and forgot about. The Wayback Machine often had spotty coverage of corporate webpages so I couldn't see all their products at a particular time.