One of the major problems with patent law is that, in the case that when you are sued by a patent troll, the burden of proof that you did not infringe on the patent is actually on the defendant, which means you have to prove that you do not infringe on the patent they're suing you on.
Et af de store problemer med patentlovgivningen er, at ifald du sagsøges af en patent trold, falder bevisbyrden for, at du ikke krænkede patentet faktisk på den anklagede, hvilket betyder at du skal bevise at du ikke krænker det patent de sagsøger dig under.