Wikipedia defines it as, “In international law and business, patent trolling or patent hoarding is a categorical or pejorative term applied to a person or compa

Wikipedia defines it as, “In international law and business, patent trolling or patent hoarding is a categorical or pejorative term applied to a person or company that attempts to enforce patent rights against accused infringers far beyond the patent's actual value or contribution to the prior art....” It goes on to say that patent trolls often don’t make products using the patents, but this is not always the case. That definition seems a lot better than one limited to a non-practicing entity.