If you're looking to use public court records for an internal data project, I have some good news and some bad news. The good news is that, at least for federal cases, PACER exists and has a solid track record of being able to run queries across all 94 U.S. federal courts. The bad news, though, is that each individual court (or each chamber within a court) has its own idea about what's important to put into PACER. And even if you find what you need, it can be expensive.