I've seen RedHat (via JBoss) knowingly patent work they read in a research paper without referencing or funding them. I was positive it was for a reward, as there was no additionally novel ideas in their descriptions and similar work was already open sourced. I knew it wouldn't hold up so it didn't bother me as impacting my projects, but I was disappointed over the ethics of them doing that. I do wonder how many patent rewards are given for someone else's work by farming from the research community.