Also case law that sets new precedent is almost always marked as such. Here’s an example, US v. Auernheimer, the case that I set to enforce Constitutional standards, available here on the EFF website: https://www.eff.org/files/2014/04/11/weev.pdf You can see in the top right corner of the cover page that it is clearly marked PRECEDENTIAL, so that people searching for new interpreations and standards within the law can discover it by search queries.