I'm always amazed at the rampant patent trolling that happens with deep learning papers/ideas. In this dump, if you search with the names of famous researchers in ML (such as Yoshua Bengio [1] or Yann Lecun [2]) you will find 100s of troll patents citing their work. Not all of them are troll though. Maybe this corpus can be used to automatically identify them, perhaps by merging data from arxiv?
[1] https://www.judyrecords.com/record/vibvgc4w4e2bc [2] https://www.judyrecords.com/record/v9kbckceib0c9