Carl Malamud and his organization Public Resource have a project to "recycle" documents that you buy from PACER, the Federal Judiciary's centralized registration, billing, and technical support center for electronic access to U.S. District, Bankruptcy, and Appellate court records. They have a page of FAQs to answer any questions you may have - and, by the way, provide some interesting stats on PACER usage and fees.
Here are the simple instructions from the site for how to recycle your PACER documents:
"Just upload all your PACER Documents to our recycling bin. Click on the recycle bin and you'll be presented with a dialogue to choose files to upload. Then, just hit the “Start Upload” button and you'll hear the sounds of progress as your documents get reinjected into the public domain.
We'll take the documents, look at them, and then put them onto bulk.resource.org/courts.gov/pacer for future distribution. This is a manual process and you won't see your documents show up right away. But, over time, we hope to accumulate a significant database of PACER Documents. "