title_body: What are criteria for determining whether an ebook file is pirated or non-infringing?
upvoted_answer: There is no real way we have had cases where major ebook places sold books that later were shown they did not have the right to ..
  
  e.g. Amazon and the copy of 1984 they pulled back see here
  
  
    An Amazon spokesman, Drew Herdener, said in an e-mail message that the books were added to the Kindle store by a company that did not have rights to them, using a self-service function. “When we were notified of this by the rights holder, we removed the illegal copies from our systems and from customers’ devices, and refunded customers,” he said.